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Using server as Wifi range extender


What does a media server need?Cannot ssh into Ubuntu Server by hostnameServer doesn't want to connect to the wired networkHow to make a home server using Ubuntu desktop?Unable to connect to server on internal networkWireless Connection Lost After a Few MinutesUbuntu Server Disk Set-upSetting up SSH Server






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5


















I just moved to a bigger apartment and my router signal peaks right before the edge of it, which is were I just installed my home server, an old laptop with ubuntu server I use to store media and as a printer server.



So the idea is to make the server act as a range extender as well, problem is I can't find any documentation on how to do it.



Can it be done?










share|improve this question































    5


















    I just moved to a bigger apartment and my router signal peaks right before the edge of it, which is were I just installed my home server, an old laptop with ubuntu server I use to store media and as a printer server.



    So the idea is to make the server act as a range extender as well, problem is I can't find any documentation on how to do it.



    Can it be done?










    share|improve this question



























      5













      5









      5








      I just moved to a bigger apartment and my router signal peaks right before the edge of it, which is were I just installed my home server, an old laptop with ubuntu server I use to store media and as a printer server.



      So the idea is to make the server act as a range extender as well, problem is I can't find any documentation on how to do it.



      Can it be done?










      share|improve this question














      I just moved to a bigger apartment and my router signal peaks right before the edge of it, which is were I just installed my home server, an old laptop with ubuntu server I use to store media and as a printer server.



      So the idea is to make the server act as a range extender as well, problem is I can't find any documentation on how to do it.



      Can it be done?







      wireless server lan






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Dec 25 '13 at 22:31









      GhostGhost

      631 silver badge6 bronze badges




      631 silver badge6 bronze badges























          3 Answers
          3






          active

          oldest

          votes


















          1



















          I use this script described in this post to create a hotspot in my Ubuntu server:



          http://www.webupd8.org/2013/06/how-to-set-up-wireless-hotspot-access.html



          Basically, it helps you create a hotspot. You'll need to have two interfaces in the computer you want to use, one connected to the internet, and the serving the hotspot.



          sudo add-apt-repository ppa:nilarimogard/webupd8
          sudo apt-get update
          sudo apt-get install ap-hotspot


          When it's installed, run:



          sudo ap-hotspot configure


          It will ask you a few questions (internet interface, wireless interface to create the access point, password) and then the hotspot can be run and stopped with:



          sudo ap-hotspot start
          sudo ap-hotspot stop


          Note than this script automates the process of creating the hotspot, which can be done manually installing and configuring dns-masq and hostapd, but the result is the same.






          share|improve this answer




















          • 3





            Thanks but wouldn't this create a separate AP? I need to extend the signal of the router

            – Ghost
            Dec 26 '13 at 14:12











          • Yes, it creates an access point, but it would work exactly the same way. What you do is basically make your server act as a wireless router. It's the closest solution I've found.

            – animaletdesequia
            Dec 26 '13 at 14:29











          • I would like this answer to be unaccepted so we can get an answer for wifi range extending

            – steve antwan
            Sep 29 at 14:15











          • @steveantwan only the original poster of the question can unaccept. You can still get answers though even if a question has an accepted answer - accepted does not mean closed.

            – Thomas Ward
            Sep 30 at 15:18






          • 1





            I see that my comment above ought to have gone to @steveantwan. If you can one of those servers you plan to use for extending your wifi have a wired connection to the LAN, then I can detail how I'd do it - but you've got to be someone comfortable working at the CLI.

            – AnthonyK
            Oct 7 at 1:49


















          0



















          create_ap is a great tool for creating any access point.



          I was able to create a wifi exteder using the following configuration:



          CHANNEL=default
          GATEWAY=192.168.2.1
          WPA_VERSION=2
          ETC_HOSTS=0
          DHCP_DNS=gateway
          NO_DNS=0
          NO_DNSMASQ=0
          HIDDEN=0
          MAC_FILTER=0
          MAC_FILTER_ACCEPT=/etc/hostapd/hostapd.accept
          ISOLATE_CLIENTS=0
          SHARE_METHOD=nat
          IEEE80211N=0
          IEEE80211AC=0
          HT_CAPAB=[HT40+]
          VHT_CAPAB=
          DRIVER=nl80211
          NO_VIRT=0
          COUNTRY=
          FREQ_BAND=2.4
          NEW_MACADDR=
          DAEMONIZE=0
          NO_HAVEGED=0
          WIFI_IFACE=wlan0
          INTERNET_IFACE=wlan0
          SSID=MyAccessPoint
          PASSPHRASE=12345678
          USE_PSK=0


          This configuration basically creates a new hotspot with SSID: MyAccessPoint and password: 12345678, which will connect to the internet via the ubuntu server's INTERNET_IFACE



          Important notes:




          1. NO_VIRT=0is a must if WIFI_IFACE and INTERNET_IFACE are the same.

          2. It's possible to play with these parametersIEEE80211N IEEE80211AC HT_CAPAB VHT_CAPAB to get better preformance from the ubuntu server's wifi, but it requires some more knowledge about your wifi hardware

          3. I used SHARE_METHOD=nat because SHARE_METHOD=bridge gave me an error, but I guess installing some requirments and/or updating the kernel would fix it.





          share|improve this answer


































            0



















            The instructions below make the assumption that the Laptop (Server) is connected as indicated below - pardon my ascii art. Specifically, that it has a wired connection to the LAN and also has a Wireless interface.



             ^ ^
            | | SSID: This here be my WiFi
            | | PSK: St@yTh3#ell0ut!
            / CHANNEL: 6
            ----------------- / -----------------
            | Laptop | |wlan0 wlan0| | Router |
            | (Server) ---| |--- |
            | ---| |--- |
            | | |eth0 -- -- eth0| | |
            ----------------- | | -----------------
            | |
            -----------------
            | Switch |
            -----------------


            In this scenario, you can extend the Router's WiFi by using the following configuration. The steps below require that hostapd and dnsmasq be installed on the Laptop:



            cat <<EOF | ~/extendwifi.sh
            #!/bin/bash
            sudo apt install -y hostapd
            sudo mv /etc/hostapd.conf,.old
            wget -qO- https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf | egrep -v '^$|^#' | sed -e 's/test/This here be my WiFi/;s/rts_threshold=-1/rts_threshold=2347/;s/fragm_threshold=-1/fragm_threshold=2346/' | sudo tee /etc/hostapd/hostapd.conf
            echo -e "wpa=2nwpa_passphrase=St@yTh3#ell0ut!nwpa_key_mgmt=WPA-PSK WPA-EAP WPA-PSK-SHA256 WPA-EAP-SHA256" | sudo tee /etc/hostapd/hostapd.conf
            EOF
            chmod +x ~/extendwifi.sh
            ~/extendwifi.sh


            Once the script above has been executed, you should restart the hostapd service systemctl restart hostapd



            If you have WiFiAnalyzer (open-source) installed on your Android phone, then you should be able to now see this new access point (check the MAC addresses). See it? Good! If not, double check your configuration. Of note is the channel; make sure to change it in /etc/hostapd/hostapd.conf if they appear on the same channel.



            Now, since this procedure has turned your lowly Laptop into a Router, we now need to deal with some networking bits. For that, you will definitely need dnsmasq and here's what you'll need to do:



            • Install dnsmasq - sudo apt install -y dnsmasq

            • Enable IP Forwarding (file /etc/sysctl.conf)

              • nano /etc/sysctl.conf

              • Uncomment net.ipv4.ip_forward=1

              • Save the file and exit the editor

              • sudo sysctl -p


            Now we need to create the configuration for dnsmasq. Let's assume that we'll create a new subnet with the following details:
            - Subnet IP : 10.11.12.0/24
            - DHCP Range : 10.11.12.13 to 10.11.12.32
            - This gives you 20 devices that you can attach to this wifi subnet.
            - Increase if you need more
            - wlan0 IP : 10.11.12.1/24
            - You will need to have somehow added this IP to the interface
            - There are many tutorials on how to accomplish this on the internet
            - Lease Period : 12hours
            - DNS Server : 192.168.1.1
            - Assuming that the Router is at IP 192.168.1.1 and is also the DNS Server



            Copy and paste the lines below on the terminal and hit enter:



            cat <<EOF | sudo tee /etc/hostapd_dnsmasq.conf
            bind_interfaces
            interface=wlan0
            dhcp-range=10.11.12.13,10.11.12.32,255.255.255.0,12h # increase if you need more
            dhcp-option=option:router,10.11.12.1
            dhcp-option=option:dns-server,192.168.1.1
            EOF


            Now we need to create a service file to start the dnsmasq service



            Copy and paste the lines below on the terminal and hit enter:



            cat <<EOF | sudo tee /etc/systemd/system/hostapd_dnsmasq.service
            [Unit]
            Description=DHCP and DNS caching server for wlan1.
            After=network.target

            [Service]
            ExecStartPre=/sbin/iptables -t nat -A POSTROUTING ! -o wlan0 -j MASQUERADE
            ExecStart=/usr/sbin/dnsmasq -k --conf-file=/etc/hostapd_dnsmasq.conf
            ExecStopPost=/sbin/iptables -t nat -D POSTROUTING ! -o wlan0 -j MASQUERADE
            ExecReload=/bin/kill -HUP $MAINPID
            Restart=on-failure
            RestartSec=300

            [Install]
            WantedBy=multi-user.target
            EOF


            Now that all bits and pieces are in place, let's start the service:



            sudo systemctl restart hostapd_dnsmasq



            I always use restart even though the service is stopped. This is my best practice.



            If all is working as intended, then you can enable the service so it starts automatically on Laptop reboot:



            sudo systemctl enable hostapd_dnsmasq



            Enjoy!



            NOTE: If your Laptop does not have an RJ45 port, then your only option is to use multiple WiFi dongles and definitely a different SSID for the new WiFi AP. The configuration will be similar; the main difference being that you will not be extending your current WiFi but rather creating a new one.



            CAVEAT EMPTOR
            I have a similar setting that I occasionally utilise when I'm testing. If you break anything on your system, you alone are responsible for the breakage and you get to keep all the pieces.






            share|improve this answer


























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              3 Answers
              3






              active

              oldest

              votes








              3 Answers
              3






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              1



















              I use this script described in this post to create a hotspot in my Ubuntu server:



              http://www.webupd8.org/2013/06/how-to-set-up-wireless-hotspot-access.html



              Basically, it helps you create a hotspot. You'll need to have two interfaces in the computer you want to use, one connected to the internet, and the serving the hotspot.



              sudo add-apt-repository ppa:nilarimogard/webupd8
              sudo apt-get update
              sudo apt-get install ap-hotspot


              When it's installed, run:



              sudo ap-hotspot configure


              It will ask you a few questions (internet interface, wireless interface to create the access point, password) and then the hotspot can be run and stopped with:



              sudo ap-hotspot start
              sudo ap-hotspot stop


              Note than this script automates the process of creating the hotspot, which can be done manually installing and configuring dns-masq and hostapd, but the result is the same.






              share|improve this answer




















              • 3





                Thanks but wouldn't this create a separate AP? I need to extend the signal of the router

                – Ghost
                Dec 26 '13 at 14:12











              • Yes, it creates an access point, but it would work exactly the same way. What you do is basically make your server act as a wireless router. It's the closest solution I've found.

                – animaletdesequia
                Dec 26 '13 at 14:29











              • I would like this answer to be unaccepted so we can get an answer for wifi range extending

                – steve antwan
                Sep 29 at 14:15











              • @steveantwan only the original poster of the question can unaccept. You can still get answers though even if a question has an accepted answer - accepted does not mean closed.

                – Thomas Ward
                Sep 30 at 15:18






              • 1





                I see that my comment above ought to have gone to @steveantwan. If you can one of those servers you plan to use for extending your wifi have a wired connection to the LAN, then I can detail how I'd do it - but you've got to be someone comfortable working at the CLI.

                – AnthonyK
                Oct 7 at 1:49















              1



















              I use this script described in this post to create a hotspot in my Ubuntu server:



              http://www.webupd8.org/2013/06/how-to-set-up-wireless-hotspot-access.html



              Basically, it helps you create a hotspot. You'll need to have two interfaces in the computer you want to use, one connected to the internet, and the serving the hotspot.



              sudo add-apt-repository ppa:nilarimogard/webupd8
              sudo apt-get update
              sudo apt-get install ap-hotspot


              When it's installed, run:



              sudo ap-hotspot configure


              It will ask you a few questions (internet interface, wireless interface to create the access point, password) and then the hotspot can be run and stopped with:



              sudo ap-hotspot start
              sudo ap-hotspot stop


              Note than this script automates the process of creating the hotspot, which can be done manually installing and configuring dns-masq and hostapd, but the result is the same.






              share|improve this answer




















              • 3





                Thanks but wouldn't this create a separate AP? I need to extend the signal of the router

                – Ghost
                Dec 26 '13 at 14:12











              • Yes, it creates an access point, but it would work exactly the same way. What you do is basically make your server act as a wireless router. It's the closest solution I've found.

                – animaletdesequia
                Dec 26 '13 at 14:29











              • I would like this answer to be unaccepted so we can get an answer for wifi range extending

                – steve antwan
                Sep 29 at 14:15











              • @steveantwan only the original poster of the question can unaccept. You can still get answers though even if a question has an accepted answer - accepted does not mean closed.

                – Thomas Ward
                Sep 30 at 15:18






              • 1





                I see that my comment above ought to have gone to @steveantwan. If you can one of those servers you plan to use for extending your wifi have a wired connection to the LAN, then I can detail how I'd do it - but you've got to be someone comfortable working at the CLI.

                – AnthonyK
                Oct 7 at 1:49













              1















              1











              1









              I use this script described in this post to create a hotspot in my Ubuntu server:



              http://www.webupd8.org/2013/06/how-to-set-up-wireless-hotspot-access.html



              Basically, it helps you create a hotspot. You'll need to have two interfaces in the computer you want to use, one connected to the internet, and the serving the hotspot.



              sudo add-apt-repository ppa:nilarimogard/webupd8
              sudo apt-get update
              sudo apt-get install ap-hotspot


              When it's installed, run:



              sudo ap-hotspot configure


              It will ask you a few questions (internet interface, wireless interface to create the access point, password) and then the hotspot can be run and stopped with:



              sudo ap-hotspot start
              sudo ap-hotspot stop


              Note than this script automates the process of creating the hotspot, which can be done manually installing and configuring dns-masq and hostapd, but the result is the same.






              share|improve this answer














              I use this script described in this post to create a hotspot in my Ubuntu server:



              http://www.webupd8.org/2013/06/how-to-set-up-wireless-hotspot-access.html



              Basically, it helps you create a hotspot. You'll need to have two interfaces in the computer you want to use, one connected to the internet, and the serving the hotspot.



              sudo add-apt-repository ppa:nilarimogard/webupd8
              sudo apt-get update
              sudo apt-get install ap-hotspot


              When it's installed, run:



              sudo ap-hotspot configure


              It will ask you a few questions (internet interface, wireless interface to create the access point, password) and then the hotspot can be run and stopped with:



              sudo ap-hotspot start
              sudo ap-hotspot stop


              Note than this script automates the process of creating the hotspot, which can be done manually installing and configuring dns-masq and hostapd, but the result is the same.







              share|improve this answer













              share|improve this answer




              share|improve this answer










              answered Dec 26 '13 at 2:01









              animaletdesequiaanimaletdesequia

              7,2104 gold badges20 silver badges39 bronze badges




              7,2104 gold badges20 silver badges39 bronze badges










              • 3





                Thanks but wouldn't this create a separate AP? I need to extend the signal of the router

                – Ghost
                Dec 26 '13 at 14:12











              • Yes, it creates an access point, but it would work exactly the same way. What you do is basically make your server act as a wireless router. It's the closest solution I've found.

                – animaletdesequia
                Dec 26 '13 at 14:29











              • I would like this answer to be unaccepted so we can get an answer for wifi range extending

                – steve antwan
                Sep 29 at 14:15











              • @steveantwan only the original poster of the question can unaccept. You can still get answers though even if a question has an accepted answer - accepted does not mean closed.

                – Thomas Ward
                Sep 30 at 15:18






              • 1





                I see that my comment above ought to have gone to @steveantwan. If you can one of those servers you plan to use for extending your wifi have a wired connection to the LAN, then I can detail how I'd do it - but you've got to be someone comfortable working at the CLI.

                – AnthonyK
                Oct 7 at 1:49












              • 3





                Thanks but wouldn't this create a separate AP? I need to extend the signal of the router

                – Ghost
                Dec 26 '13 at 14:12











              • Yes, it creates an access point, but it would work exactly the same way. What you do is basically make your server act as a wireless router. It's the closest solution I've found.

                – animaletdesequia
                Dec 26 '13 at 14:29











              • I would like this answer to be unaccepted so we can get an answer for wifi range extending

                – steve antwan
                Sep 29 at 14:15











              • @steveantwan only the original poster of the question can unaccept. You can still get answers though even if a question has an accepted answer - accepted does not mean closed.

                – Thomas Ward
                Sep 30 at 15:18






              • 1





                I see that my comment above ought to have gone to @steveantwan. If you can one of those servers you plan to use for extending your wifi have a wired connection to the LAN, then I can detail how I'd do it - but you've got to be someone comfortable working at the CLI.

                – AnthonyK
                Oct 7 at 1:49







              3




              3





              Thanks but wouldn't this create a separate AP? I need to extend the signal of the router

              – Ghost
              Dec 26 '13 at 14:12





              Thanks but wouldn't this create a separate AP? I need to extend the signal of the router

              – Ghost
              Dec 26 '13 at 14:12













              Yes, it creates an access point, but it would work exactly the same way. What you do is basically make your server act as a wireless router. It's the closest solution I've found.

              – animaletdesequia
              Dec 26 '13 at 14:29





              Yes, it creates an access point, but it would work exactly the same way. What you do is basically make your server act as a wireless router. It's the closest solution I've found.

              – animaletdesequia
              Dec 26 '13 at 14:29













              I would like this answer to be unaccepted so we can get an answer for wifi range extending

              – steve antwan
              Sep 29 at 14:15





              I would like this answer to be unaccepted so we can get an answer for wifi range extending

              – steve antwan
              Sep 29 at 14:15













              @steveantwan only the original poster of the question can unaccept. You can still get answers though even if a question has an accepted answer - accepted does not mean closed.

              – Thomas Ward
              Sep 30 at 15:18





              @steveantwan only the original poster of the question can unaccept. You can still get answers though even if a question has an accepted answer - accepted does not mean closed.

              – Thomas Ward
              Sep 30 at 15:18




              1




              1





              I see that my comment above ought to have gone to @steveantwan. If you can one of those servers you plan to use for extending your wifi have a wired connection to the LAN, then I can detail how I'd do it - but you've got to be someone comfortable working at the CLI.

              – AnthonyK
              Oct 7 at 1:49





              I see that my comment above ought to have gone to @steveantwan. If you can one of those servers you plan to use for extending your wifi have a wired connection to the LAN, then I can detail how I'd do it - but you've got to be someone comfortable working at the CLI.

              – AnthonyK
              Oct 7 at 1:49













              0



















              create_ap is a great tool for creating any access point.



              I was able to create a wifi exteder using the following configuration:



              CHANNEL=default
              GATEWAY=192.168.2.1
              WPA_VERSION=2
              ETC_HOSTS=0
              DHCP_DNS=gateway
              NO_DNS=0
              NO_DNSMASQ=0
              HIDDEN=0
              MAC_FILTER=0
              MAC_FILTER_ACCEPT=/etc/hostapd/hostapd.accept
              ISOLATE_CLIENTS=0
              SHARE_METHOD=nat
              IEEE80211N=0
              IEEE80211AC=0
              HT_CAPAB=[HT40+]
              VHT_CAPAB=
              DRIVER=nl80211
              NO_VIRT=0
              COUNTRY=
              FREQ_BAND=2.4
              NEW_MACADDR=
              DAEMONIZE=0
              NO_HAVEGED=0
              WIFI_IFACE=wlan0
              INTERNET_IFACE=wlan0
              SSID=MyAccessPoint
              PASSPHRASE=12345678
              USE_PSK=0


              This configuration basically creates a new hotspot with SSID: MyAccessPoint and password: 12345678, which will connect to the internet via the ubuntu server's INTERNET_IFACE



              Important notes:




              1. NO_VIRT=0is a must if WIFI_IFACE and INTERNET_IFACE are the same.

              2. It's possible to play with these parametersIEEE80211N IEEE80211AC HT_CAPAB VHT_CAPAB to get better preformance from the ubuntu server's wifi, but it requires some more knowledge about your wifi hardware

              3. I used SHARE_METHOD=nat because SHARE_METHOD=bridge gave me an error, but I guess installing some requirments and/or updating the kernel would fix it.





              share|improve this answer































                0



















                create_ap is a great tool for creating any access point.



                I was able to create a wifi exteder using the following configuration:



                CHANNEL=default
                GATEWAY=192.168.2.1
                WPA_VERSION=2
                ETC_HOSTS=0
                DHCP_DNS=gateway
                NO_DNS=0
                NO_DNSMASQ=0
                HIDDEN=0
                MAC_FILTER=0
                MAC_FILTER_ACCEPT=/etc/hostapd/hostapd.accept
                ISOLATE_CLIENTS=0
                SHARE_METHOD=nat
                IEEE80211N=0
                IEEE80211AC=0
                HT_CAPAB=[HT40+]
                VHT_CAPAB=
                DRIVER=nl80211
                NO_VIRT=0
                COUNTRY=
                FREQ_BAND=2.4
                NEW_MACADDR=
                DAEMONIZE=0
                NO_HAVEGED=0
                WIFI_IFACE=wlan0
                INTERNET_IFACE=wlan0
                SSID=MyAccessPoint
                PASSPHRASE=12345678
                USE_PSK=0


                This configuration basically creates a new hotspot with SSID: MyAccessPoint and password: 12345678, which will connect to the internet via the ubuntu server's INTERNET_IFACE



                Important notes:




                1. NO_VIRT=0is a must if WIFI_IFACE and INTERNET_IFACE are the same.

                2. It's possible to play with these parametersIEEE80211N IEEE80211AC HT_CAPAB VHT_CAPAB to get better preformance from the ubuntu server's wifi, but it requires some more knowledge about your wifi hardware

                3. I used SHARE_METHOD=nat because SHARE_METHOD=bridge gave me an error, but I guess installing some requirments and/or updating the kernel would fix it.





                share|improve this answer





























                  0















                  0











                  0









                  create_ap is a great tool for creating any access point.



                  I was able to create a wifi exteder using the following configuration:



                  CHANNEL=default
                  GATEWAY=192.168.2.1
                  WPA_VERSION=2
                  ETC_HOSTS=0
                  DHCP_DNS=gateway
                  NO_DNS=0
                  NO_DNSMASQ=0
                  HIDDEN=0
                  MAC_FILTER=0
                  MAC_FILTER_ACCEPT=/etc/hostapd/hostapd.accept
                  ISOLATE_CLIENTS=0
                  SHARE_METHOD=nat
                  IEEE80211N=0
                  IEEE80211AC=0
                  HT_CAPAB=[HT40+]
                  VHT_CAPAB=
                  DRIVER=nl80211
                  NO_VIRT=0
                  COUNTRY=
                  FREQ_BAND=2.4
                  NEW_MACADDR=
                  DAEMONIZE=0
                  NO_HAVEGED=0
                  WIFI_IFACE=wlan0
                  INTERNET_IFACE=wlan0
                  SSID=MyAccessPoint
                  PASSPHRASE=12345678
                  USE_PSK=0


                  This configuration basically creates a new hotspot with SSID: MyAccessPoint and password: 12345678, which will connect to the internet via the ubuntu server's INTERNET_IFACE



                  Important notes:




                  1. NO_VIRT=0is a must if WIFI_IFACE and INTERNET_IFACE are the same.

                  2. It's possible to play with these parametersIEEE80211N IEEE80211AC HT_CAPAB VHT_CAPAB to get better preformance from the ubuntu server's wifi, but it requires some more knowledge about your wifi hardware

                  3. I used SHARE_METHOD=nat because SHARE_METHOD=bridge gave me an error, but I guess installing some requirments and/or updating the kernel would fix it.





                  share|improve this answer
















                  create_ap is a great tool for creating any access point.



                  I was able to create a wifi exteder using the following configuration:



                  CHANNEL=default
                  GATEWAY=192.168.2.1
                  WPA_VERSION=2
                  ETC_HOSTS=0
                  DHCP_DNS=gateway
                  NO_DNS=0
                  NO_DNSMASQ=0
                  HIDDEN=0
                  MAC_FILTER=0
                  MAC_FILTER_ACCEPT=/etc/hostapd/hostapd.accept
                  ISOLATE_CLIENTS=0
                  SHARE_METHOD=nat
                  IEEE80211N=0
                  IEEE80211AC=0
                  HT_CAPAB=[HT40+]
                  VHT_CAPAB=
                  DRIVER=nl80211
                  NO_VIRT=0
                  COUNTRY=
                  FREQ_BAND=2.4
                  NEW_MACADDR=
                  DAEMONIZE=0
                  NO_HAVEGED=0
                  WIFI_IFACE=wlan0
                  INTERNET_IFACE=wlan0
                  SSID=MyAccessPoint
                  PASSPHRASE=12345678
                  USE_PSK=0


                  This configuration basically creates a new hotspot with SSID: MyAccessPoint and password: 12345678, which will connect to the internet via the ubuntu server's INTERNET_IFACE



                  Important notes:




                  1. NO_VIRT=0is a must if WIFI_IFACE and INTERNET_IFACE are the same.

                  2. It's possible to play with these parametersIEEE80211N IEEE80211AC HT_CAPAB VHT_CAPAB to get better preformance from the ubuntu server's wifi, but it requires some more knowledge about your wifi hardware

                  3. I used SHARE_METHOD=nat because SHARE_METHOD=bridge gave me an error, but I guess installing some requirments and/or updating the kernel would fix it.






                  share|improve this answer















                  share|improve this answer




                  share|improve this answer








                  edited Oct 5 at 21:30

























                  answered Oct 5 at 21:18









                  ofiruleofirule

                  1616 bronze badges




                  1616 bronze badges
























                      0



















                      The instructions below make the assumption that the Laptop (Server) is connected as indicated below - pardon my ascii art. Specifically, that it has a wired connection to the LAN and also has a Wireless interface.



                       ^ ^
                      | | SSID: This here be my WiFi
                      | | PSK: St@yTh3#ell0ut!
                      / CHANNEL: 6
                      ----------------- / -----------------
                      | Laptop | |wlan0 wlan0| | Router |
                      | (Server) ---| |--- |
                      | ---| |--- |
                      | | |eth0 -- -- eth0| | |
                      ----------------- | | -----------------
                      | |
                      -----------------
                      | Switch |
                      -----------------


                      In this scenario, you can extend the Router's WiFi by using the following configuration. The steps below require that hostapd and dnsmasq be installed on the Laptop:



                      cat <<EOF | ~/extendwifi.sh
                      #!/bin/bash
                      sudo apt install -y hostapd
                      sudo mv /etc/hostapd.conf,.old
                      wget -qO- https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf | egrep -v '^$|^#' | sed -e 's/test/This here be my WiFi/;s/rts_threshold=-1/rts_threshold=2347/;s/fragm_threshold=-1/fragm_threshold=2346/' | sudo tee /etc/hostapd/hostapd.conf
                      echo -e "wpa=2nwpa_passphrase=St@yTh3#ell0ut!nwpa_key_mgmt=WPA-PSK WPA-EAP WPA-PSK-SHA256 WPA-EAP-SHA256" | sudo tee /etc/hostapd/hostapd.conf
                      EOF
                      chmod +x ~/extendwifi.sh
                      ~/extendwifi.sh


                      Once the script above has been executed, you should restart the hostapd service systemctl restart hostapd



                      If you have WiFiAnalyzer (open-source) installed on your Android phone, then you should be able to now see this new access point (check the MAC addresses). See it? Good! If not, double check your configuration. Of note is the channel; make sure to change it in /etc/hostapd/hostapd.conf if they appear on the same channel.



                      Now, since this procedure has turned your lowly Laptop into a Router, we now need to deal with some networking bits. For that, you will definitely need dnsmasq and here's what you'll need to do:



                      • Install dnsmasq - sudo apt install -y dnsmasq

                      • Enable IP Forwarding (file /etc/sysctl.conf)

                        • nano /etc/sysctl.conf

                        • Uncomment net.ipv4.ip_forward=1

                        • Save the file and exit the editor

                        • sudo sysctl -p


                      Now we need to create the configuration for dnsmasq. Let's assume that we'll create a new subnet with the following details:
                      - Subnet IP : 10.11.12.0/24
                      - DHCP Range : 10.11.12.13 to 10.11.12.32
                      - This gives you 20 devices that you can attach to this wifi subnet.
                      - Increase if you need more
                      - wlan0 IP : 10.11.12.1/24
                      - You will need to have somehow added this IP to the interface
                      - There are many tutorials on how to accomplish this on the internet
                      - Lease Period : 12hours
                      - DNS Server : 192.168.1.1
                      - Assuming that the Router is at IP 192.168.1.1 and is also the DNS Server



                      Copy and paste the lines below on the terminal and hit enter:



                      cat <<EOF | sudo tee /etc/hostapd_dnsmasq.conf
                      bind_interfaces
                      interface=wlan0
                      dhcp-range=10.11.12.13,10.11.12.32,255.255.255.0,12h # increase if you need more
                      dhcp-option=option:router,10.11.12.1
                      dhcp-option=option:dns-server,192.168.1.1
                      EOF


                      Now we need to create a service file to start the dnsmasq service



                      Copy and paste the lines below on the terminal and hit enter:



                      cat <<EOF | sudo tee /etc/systemd/system/hostapd_dnsmasq.service
                      [Unit]
                      Description=DHCP and DNS caching server for wlan1.
                      After=network.target

                      [Service]
                      ExecStartPre=/sbin/iptables -t nat -A POSTROUTING ! -o wlan0 -j MASQUERADE
                      ExecStart=/usr/sbin/dnsmasq -k --conf-file=/etc/hostapd_dnsmasq.conf
                      ExecStopPost=/sbin/iptables -t nat -D POSTROUTING ! -o wlan0 -j MASQUERADE
                      ExecReload=/bin/kill -HUP $MAINPID
                      Restart=on-failure
                      RestartSec=300

                      [Install]
                      WantedBy=multi-user.target
                      EOF


                      Now that all bits and pieces are in place, let's start the service:



                      sudo systemctl restart hostapd_dnsmasq



                      I always use restart even though the service is stopped. This is my best practice.



                      If all is working as intended, then you can enable the service so it starts automatically on Laptop reboot:



                      sudo systemctl enable hostapd_dnsmasq



                      Enjoy!



                      NOTE: If your Laptop does not have an RJ45 port, then your only option is to use multiple WiFi dongles and definitely a different SSID for the new WiFi AP. The configuration will be similar; the main difference being that you will not be extending your current WiFi but rather creating a new one.



                      CAVEAT EMPTOR
                      I have a similar setting that I occasionally utilise when I'm testing. If you break anything on your system, you alone are responsible for the breakage and you get to keep all the pieces.






                      share|improve this answer





























                        0



















                        The instructions below make the assumption that the Laptop (Server) is connected as indicated below - pardon my ascii art. Specifically, that it has a wired connection to the LAN and also has a Wireless interface.



                         ^ ^
                        | | SSID: This here be my WiFi
                        | | PSK: St@yTh3#ell0ut!
                        / CHANNEL: 6
                        ----------------- / -----------------
                        | Laptop | |wlan0 wlan0| | Router |
                        | (Server) ---| |--- |
                        | ---| |--- |
                        | | |eth0 -- -- eth0| | |
                        ----------------- | | -----------------
                        | |
                        -----------------
                        | Switch |
                        -----------------


                        In this scenario, you can extend the Router's WiFi by using the following configuration. The steps below require that hostapd and dnsmasq be installed on the Laptop:



                        cat <<EOF | ~/extendwifi.sh
                        #!/bin/bash
                        sudo apt install -y hostapd
                        sudo mv /etc/hostapd.conf,.old
                        wget -qO- https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf | egrep -v '^$|^#' | sed -e 's/test/This here be my WiFi/;s/rts_threshold=-1/rts_threshold=2347/;s/fragm_threshold=-1/fragm_threshold=2346/' | sudo tee /etc/hostapd/hostapd.conf
                        echo -e "wpa=2nwpa_passphrase=St@yTh3#ell0ut!nwpa_key_mgmt=WPA-PSK WPA-EAP WPA-PSK-SHA256 WPA-EAP-SHA256" | sudo tee /etc/hostapd/hostapd.conf
                        EOF
                        chmod +x ~/extendwifi.sh
                        ~/extendwifi.sh


                        Once the script above has been executed, you should restart the hostapd service systemctl restart hostapd



                        If you have WiFiAnalyzer (open-source) installed on your Android phone, then you should be able to now see this new access point (check the MAC addresses). See it? Good! If not, double check your configuration. Of note is the channel; make sure to change it in /etc/hostapd/hostapd.conf if they appear on the same channel.



                        Now, since this procedure has turned your lowly Laptop into a Router, we now need to deal with some networking bits. For that, you will definitely need dnsmasq and here's what you'll need to do:



                        • Install dnsmasq - sudo apt install -y dnsmasq

                        • Enable IP Forwarding (file /etc/sysctl.conf)

                          • nano /etc/sysctl.conf

                          • Uncomment net.ipv4.ip_forward=1

                          • Save the file and exit the editor

                          • sudo sysctl -p


                        Now we need to create the configuration for dnsmasq. Let's assume that we'll create a new subnet with the following details:
                        - Subnet IP : 10.11.12.0/24
                        - DHCP Range : 10.11.12.13 to 10.11.12.32
                        - This gives you 20 devices that you can attach to this wifi subnet.
                        - Increase if you need more
                        - wlan0 IP : 10.11.12.1/24
                        - You will need to have somehow added this IP to the interface
                        - There are many tutorials on how to accomplish this on the internet
                        - Lease Period : 12hours
                        - DNS Server : 192.168.1.1
                        - Assuming that the Router is at IP 192.168.1.1 and is also the DNS Server



                        Copy and paste the lines below on the terminal and hit enter:



                        cat <<EOF | sudo tee /etc/hostapd_dnsmasq.conf
                        bind_interfaces
                        interface=wlan0
                        dhcp-range=10.11.12.13,10.11.12.32,255.255.255.0,12h # increase if you need more
                        dhcp-option=option:router,10.11.12.1
                        dhcp-option=option:dns-server,192.168.1.1
                        EOF


                        Now we need to create a service file to start the dnsmasq service



                        Copy and paste the lines below on the terminal and hit enter:



                        cat <<EOF | sudo tee /etc/systemd/system/hostapd_dnsmasq.service
                        [Unit]
                        Description=DHCP and DNS caching server for wlan1.
                        After=network.target

                        [Service]
                        ExecStartPre=/sbin/iptables -t nat -A POSTROUTING ! -o wlan0 -j MASQUERADE
                        ExecStart=/usr/sbin/dnsmasq -k --conf-file=/etc/hostapd_dnsmasq.conf
                        ExecStopPost=/sbin/iptables -t nat -D POSTROUTING ! -o wlan0 -j MASQUERADE
                        ExecReload=/bin/kill -HUP $MAINPID
                        Restart=on-failure
                        RestartSec=300

                        [Install]
                        WantedBy=multi-user.target
                        EOF


                        Now that all bits and pieces are in place, let's start the service:



                        sudo systemctl restart hostapd_dnsmasq



                        I always use restart even though the service is stopped. This is my best practice.



                        If all is working as intended, then you can enable the service so it starts automatically on Laptop reboot:



                        sudo systemctl enable hostapd_dnsmasq



                        Enjoy!



                        NOTE: If your Laptop does not have an RJ45 port, then your only option is to use multiple WiFi dongles and definitely a different SSID for the new WiFi AP. The configuration will be similar; the main difference being that you will not be extending your current WiFi but rather creating a new one.



                        CAVEAT EMPTOR
                        I have a similar setting that I occasionally utilise when I'm testing. If you break anything on your system, you alone are responsible for the breakage and you get to keep all the pieces.






                        share|improve this answer



























                          0















                          0











                          0









                          The instructions below make the assumption that the Laptop (Server) is connected as indicated below - pardon my ascii art. Specifically, that it has a wired connection to the LAN and also has a Wireless interface.



                           ^ ^
                          | | SSID: This here be my WiFi
                          | | PSK: St@yTh3#ell0ut!
                          / CHANNEL: 6
                          ----------------- / -----------------
                          | Laptop | |wlan0 wlan0| | Router |
                          | (Server) ---| |--- |
                          | ---| |--- |
                          | | |eth0 -- -- eth0| | |
                          ----------------- | | -----------------
                          | |
                          -----------------
                          | Switch |
                          -----------------


                          In this scenario, you can extend the Router's WiFi by using the following configuration. The steps below require that hostapd and dnsmasq be installed on the Laptop:



                          cat <<EOF | ~/extendwifi.sh
                          #!/bin/bash
                          sudo apt install -y hostapd
                          sudo mv /etc/hostapd.conf,.old
                          wget -qO- https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf | egrep -v '^$|^#' | sed -e 's/test/This here be my WiFi/;s/rts_threshold=-1/rts_threshold=2347/;s/fragm_threshold=-1/fragm_threshold=2346/' | sudo tee /etc/hostapd/hostapd.conf
                          echo -e "wpa=2nwpa_passphrase=St@yTh3#ell0ut!nwpa_key_mgmt=WPA-PSK WPA-EAP WPA-PSK-SHA256 WPA-EAP-SHA256" | sudo tee /etc/hostapd/hostapd.conf
                          EOF
                          chmod +x ~/extendwifi.sh
                          ~/extendwifi.sh


                          Once the script above has been executed, you should restart the hostapd service systemctl restart hostapd



                          If you have WiFiAnalyzer (open-source) installed on your Android phone, then you should be able to now see this new access point (check the MAC addresses). See it? Good! If not, double check your configuration. Of note is the channel; make sure to change it in /etc/hostapd/hostapd.conf if they appear on the same channel.



                          Now, since this procedure has turned your lowly Laptop into a Router, we now need to deal with some networking bits. For that, you will definitely need dnsmasq and here's what you'll need to do:



                          • Install dnsmasq - sudo apt install -y dnsmasq

                          • Enable IP Forwarding (file /etc/sysctl.conf)

                            • nano /etc/sysctl.conf

                            • Uncomment net.ipv4.ip_forward=1

                            • Save the file and exit the editor

                            • sudo sysctl -p


                          Now we need to create the configuration for dnsmasq. Let's assume that we'll create a new subnet with the following details:
                          - Subnet IP : 10.11.12.0/24
                          - DHCP Range : 10.11.12.13 to 10.11.12.32
                          - This gives you 20 devices that you can attach to this wifi subnet.
                          - Increase if you need more
                          - wlan0 IP : 10.11.12.1/24
                          - You will need to have somehow added this IP to the interface
                          - There are many tutorials on how to accomplish this on the internet
                          - Lease Period : 12hours
                          - DNS Server : 192.168.1.1
                          - Assuming that the Router is at IP 192.168.1.1 and is also the DNS Server



                          Copy and paste the lines below on the terminal and hit enter:



                          cat <<EOF | sudo tee /etc/hostapd_dnsmasq.conf
                          bind_interfaces
                          interface=wlan0
                          dhcp-range=10.11.12.13,10.11.12.32,255.255.255.0,12h # increase if you need more
                          dhcp-option=option:router,10.11.12.1
                          dhcp-option=option:dns-server,192.168.1.1
                          EOF


                          Now we need to create a service file to start the dnsmasq service



                          Copy and paste the lines below on the terminal and hit enter:



                          cat <<EOF | sudo tee /etc/systemd/system/hostapd_dnsmasq.service
                          [Unit]
                          Description=DHCP and DNS caching server for wlan1.
                          After=network.target

                          [Service]
                          ExecStartPre=/sbin/iptables -t nat -A POSTROUTING ! -o wlan0 -j MASQUERADE
                          ExecStart=/usr/sbin/dnsmasq -k --conf-file=/etc/hostapd_dnsmasq.conf
                          ExecStopPost=/sbin/iptables -t nat -D POSTROUTING ! -o wlan0 -j MASQUERADE
                          ExecReload=/bin/kill -HUP $MAINPID
                          Restart=on-failure
                          RestartSec=300

                          [Install]
                          WantedBy=multi-user.target
                          EOF


                          Now that all bits and pieces are in place, let's start the service:



                          sudo systemctl restart hostapd_dnsmasq



                          I always use restart even though the service is stopped. This is my best practice.



                          If all is working as intended, then you can enable the service so it starts automatically on Laptop reboot:



                          sudo systemctl enable hostapd_dnsmasq



                          Enjoy!



                          NOTE: If your Laptop does not have an RJ45 port, then your only option is to use multiple WiFi dongles and definitely a different SSID for the new WiFi AP. The configuration will be similar; the main difference being that you will not be extending your current WiFi but rather creating a new one.



                          CAVEAT EMPTOR
                          I have a similar setting that I occasionally utilise when I'm testing. If you break anything on your system, you alone are responsible for the breakage and you get to keep all the pieces.






                          share|improve this answer














                          The instructions below make the assumption that the Laptop (Server) is connected as indicated below - pardon my ascii art. Specifically, that it has a wired connection to the LAN and also has a Wireless interface.



                           ^ ^
                          | | SSID: This here be my WiFi
                          | | PSK: St@yTh3#ell0ut!
                          / CHANNEL: 6
                          ----------------- / -----------------
                          | Laptop | |wlan0 wlan0| | Router |
                          | (Server) ---| |--- |
                          | ---| |--- |
                          | | |eth0 -- -- eth0| | |
                          ----------------- | | -----------------
                          | |
                          -----------------
                          | Switch |
                          -----------------


                          In this scenario, you can extend the Router's WiFi by using the following configuration. The steps below require that hostapd and dnsmasq be installed on the Laptop:



                          cat <<EOF | ~/extendwifi.sh
                          #!/bin/bash
                          sudo apt install -y hostapd
                          sudo mv /etc/hostapd.conf,.old
                          wget -qO- https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf | egrep -v '^$|^#' | sed -e 's/test/This here be my WiFi/;s/rts_threshold=-1/rts_threshold=2347/;s/fragm_threshold=-1/fragm_threshold=2346/' | sudo tee /etc/hostapd/hostapd.conf
                          echo -e "wpa=2nwpa_passphrase=St@yTh3#ell0ut!nwpa_key_mgmt=WPA-PSK WPA-EAP WPA-PSK-SHA256 WPA-EAP-SHA256" | sudo tee /etc/hostapd/hostapd.conf
                          EOF
                          chmod +x ~/extendwifi.sh
                          ~/extendwifi.sh


                          Once the script above has been executed, you should restart the hostapd service systemctl restart hostapd



                          If you have WiFiAnalyzer (open-source) installed on your Android phone, then you should be able to now see this new access point (check the MAC addresses). See it? Good! If not, double check your configuration. Of note is the channel; make sure to change it in /etc/hostapd/hostapd.conf if they appear on the same channel.



                          Now, since this procedure has turned your lowly Laptop into a Router, we now need to deal with some networking bits. For that, you will definitely need dnsmasq and here's what you'll need to do:



                          • Install dnsmasq - sudo apt install -y dnsmasq

                          • Enable IP Forwarding (file /etc/sysctl.conf)

                            • nano /etc/sysctl.conf

                            • Uncomment net.ipv4.ip_forward=1

                            • Save the file and exit the editor

                            • sudo sysctl -p


                          Now we need to create the configuration for dnsmasq. Let's assume that we'll create a new subnet with the following details:
                          - Subnet IP : 10.11.12.0/24
                          - DHCP Range : 10.11.12.13 to 10.11.12.32
                          - This gives you 20 devices that you can attach to this wifi subnet.
                          - Increase if you need more
                          - wlan0 IP : 10.11.12.1/24
                          - You will need to have somehow added this IP to the interface
                          - There are many tutorials on how to accomplish this on the internet
                          - Lease Period : 12hours
                          - DNS Server : 192.168.1.1
                          - Assuming that the Router is at IP 192.168.1.1 and is also the DNS Server



                          Copy and paste the lines below on the terminal and hit enter:



                          cat <<EOF | sudo tee /etc/hostapd_dnsmasq.conf
                          bind_interfaces
                          interface=wlan0
                          dhcp-range=10.11.12.13,10.11.12.32,255.255.255.0,12h # increase if you need more
                          dhcp-option=option:router,10.11.12.1
                          dhcp-option=option:dns-server,192.168.1.1
                          EOF


                          Now we need to create a service file to start the dnsmasq service



                          Copy and paste the lines below on the terminal and hit enter:



                          cat <<EOF | sudo tee /etc/systemd/system/hostapd_dnsmasq.service
                          [Unit]
                          Description=DHCP and DNS caching server for wlan1.
                          After=network.target

                          [Service]
                          ExecStartPre=/sbin/iptables -t nat -A POSTROUTING ! -o wlan0 -j MASQUERADE
                          ExecStart=/usr/sbin/dnsmasq -k --conf-file=/etc/hostapd_dnsmasq.conf
                          ExecStopPost=/sbin/iptables -t nat -D POSTROUTING ! -o wlan0 -j MASQUERADE
                          ExecReload=/bin/kill -HUP $MAINPID
                          Restart=on-failure
                          RestartSec=300

                          [Install]
                          WantedBy=multi-user.target
                          EOF


                          Now that all bits and pieces are in place, let's start the service:



                          sudo systemctl restart hostapd_dnsmasq



                          I always use restart even though the service is stopped. This is my best practice.



                          If all is working as intended, then you can enable the service so it starts automatically on Laptop reboot:



                          sudo systemctl enable hostapd_dnsmasq



                          Enjoy!



                          NOTE: If your Laptop does not have an RJ45 port, then your only option is to use multiple WiFi dongles and definitely a different SSID for the new WiFi AP. The configuration will be similar; the main difference being that you will not be extending your current WiFi but rather creating a new one.



                          CAVEAT EMPTOR
                          I have a similar setting that I occasionally utilise when I'm testing. If you break anything on your system, you alone are responsible for the breakage and you get to keep all the pieces.







                          share|improve this answer













                          share|improve this answer




                          share|improve this answer










                          answered Oct 8 at 11:46









                          AnthonyKAnthonyK

                          4985 silver badges13 bronze badges




                          4985 silver badges13 bronze badges































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                              Training a classifier when some of the features are unknownWhy does Gradient Boosting regression predict negative values when there are no negative y-values in my training set?How to improve an existing (trained) classifier?What is effect when I set up some self defined predisctor variables?Why Matlab neural network classification returns decimal values on prediction dataset?Fitting and transforming text data in training, testing, and validation setsHow to quantify the performance of the classifier (multi-class SVM) using the test data?How do I control for some patients providing multiple samples in my training data?Training and Test setTraining a convolutional neural network for image denoising in MatlabShouldn't an autoencoder with #(neurons in hidden layer) = #(neurons in input layer) be “perfect”?