Fork Note: This is a fork of https://github.com/sdelrio/rpi-hostap, with updated packages, DHCP and i 7A47 ptables rules removed. Not actively maintained.
Designed to work on Raspberry Pi (arm) using as base image alpine linux (very little size).
Since my last change on ISP, they put a cable modem with a horrible Wireless, it drops lots of packets, and I didn't want to put an extra AP or wireless router.
Most of the time use wireless devices on same room so I decided to try to convert my current Pi on a small Access Point using a small USB dongle.
On the host system, the ralink firmware (in my case) should be installed so you can use it on AP mode. On debian/raspbian:
apt-get install firmware-ralink
Make sure your USB support AP mode:
# iw list
...
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* WDS
* monitor
* mesh point
...
Set country regulations, for example, to Spain set:
# iw reg set ES
country ES: DFS-ETSI
(2400 - 2483 @ 40), (N/A, 20), (N/A)
(5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR
(5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS
(5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS
(57000 - 66000 @ 2160), (N/A, 40), (N/A)
For modification, testings, etc.. there is already a Makefile. So you can make run to start a sample ssid with a simple password.
I've already uploaded the image to docker hubs, so you can run it from ther like this:
sudo docker run -d -t \
-e INTERFACE=wlan0 \
-e CHANNEL=6 \
-e SSID=runssid \
-e AP_ADDR=192.168.254.1 \
-e SUBNET=192.168.254.0 \
-e WPA_PASSPHRASE=passw0rd \
-e OUTGOINGS=eth0 \
--privileged \
--net host \
sdelrio/rpi-hostap:latest
But before this, hostap usually requires that wlan0 interface to be already up, so before docker run take the interface up:
/sbin/ifconfig wlan0 192.168.254.1/24 up
Also you should have a driver to enable hostap on your USB wifi (if you are using Pi 3 integrated WiFI you won't need this).
apt-get install firmware-ralink
Make sure you are not runing wpa_supplicant on your host machine or docker container will tell messages like wlan0: Could not connect to kernel driver.
# ps uaxf |grep wpa_supplicant
root 22619 0.0 0.4 6616 3700 ? Ss 22:04 0:00 /sbin/wpa_supplicant -s -B -P /run/wpa_supplicant.wlan0.pid -i wlan0 -D nl80211,wext -C /run/wpa_supplicant
| Name | Required | Description | Default Value |
|---|---|---|---|
| INTERFACE | true | The wireless interface | |
| CHANNEL | false | WiFi Channel to use | 11 |
| SSID | false | WiFi Name | raspberry |
| AP_ADDR | false | Access Point IP Address | 192.168.254.1 |
| SUBNET | false | WiFi network subnet | 192.168.254.0 |
| WPA_PASSPHRASE | false | WiFi Password | passw0rd |
| OUTGOINGS | false | Interfaces to external traffic | |
| HW_MODE | false | Hardware protocol | g |
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