Ubuntu – How to create a WiFi hotspot sharing wireless internet connection (single adapter)

hot-spotwirelesswireless-access-point

I know how to create a hotspot when connected to a wired network, but when I am using internet from a WiFi connection, this disconnects the wireless connection the moment I activate the hotspot.

In Windows I can use Connectify Hotspot, which enables me to share the internet connection from the same wireless adapter as I am creating an access point on. As you can read on the technology overview page:

Access Point mode allows you to create a hotspot using the same Wi-Fi card that you are using to access the Internet.

How do I do this on Ubuntu?

Best Answer

Simple steps: Create wifi hotspot in ubuntu

Disable Wifi (Uncheck Enable Wi-Fi)
Go to network connection (Edit Connections...)
Click "Add"
Choose "Wi-Fi" and click "Create"
Type in Connection name like "wifi-hotspot"
Type in SSID as you wish
Choose Device MAC Address from the dropdown (wlan0)
Wifi Security select "WPA & WPA2 Personal" and set a password.
Go to IPv4 Settings tab, from Method drop-down box select Shared to other computers.
Then save and close.
Open Terminal (Ctrl+Alt+T) and type in the following command with your connection name used in step 5.
```
sudo gedit /etc/NetworkManager/system-connections/wifi-hotspot
```
Find mode=infrastructure and change it to mode=ap
Now check the network section where wi-fi will be connected to the created hotspot automatically. If you can not find it, go to Connect to Hidden Network... Find the connection and connect to it.

Source: http://ubuntuhandbook.org/index.php/2014/09/3-ways-create-wifi-hotspot-ubuntu/

Related Solutions

Ubuntu – Create a hotspot on Ubuntu 15.04 (single adapter) help!

This method:

1- Go to network connection (Edit Connections)
2- Click Add
3- Choose Wi-Fi and click Create
4- Type in Connection name like "UbuntuAP"
5- Type in SSID as you wish
6- Choose Device MAC Address from the dropdown (wlan0)
7- Wifi Security select WPA & WPA2 Personal and set a password.
8- Go to IPv4 Settings tab, from Method drop-down box select Shared to other computers.
9- Then save and close.
10- Open Terminal (Ctrl+Alt+T) and type in the following command with your connection name used in step 4.

sudo gedit /etc/NetworkManager/system-connections/UbuntuAP

11- Find mode=infrastructure and change it to mode=ap
12- Now click on WiFi icon in top right and select Connect to Hidden Wi-Fi Network...
13- Then Select UbuntuAP connection and click Connect.
14- Finish :D

Ubuntu – How to create hotspot without internet connection

A simple solution is to use create_ap. From their site:

create_ap is a tool that helps you create an open, or encrypted AP at any channel, hide your SSID, disable communication between clients (client isolation), IEEE 802.11n & 802.11ac support, Internet sharing methods: NATed or Bridged or None (no Internet sharing)

For your case you want to create an AP with the linux pc without sharing the internet from your dongle to clients, but can do other Lan stuff, like file sharing.

Your wifi card needs to support creating AP

Install some packages:

sudo apt install util-linux bash procps hostapd iproute2 iw haveged net-tools dnsmasq iptables

Get the create_ap package. From the terminal do

git clone https://github.com/oblique/create_ap
cd create_ap
sudo make install

After installation, check the name of your modem and wifi card with ifconfig (deprecated) or:
```
iwconfig
```
the wifi card usually is wlan0 or wlp2s0 and usb modem is eth0. yours might be different
Now start hotspot from your linux without internet:
```
sudo create_ap -n wlp2s0 MyAccessPoint
```

You can then connect clients. Your internet would not be shared but you can do samba and other things without internet

Best Answer

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Ubuntu – Create a hotspot on Ubuntu 15.04 (single adapter) help!

Ubuntu – How to create hotspot without internet connection

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