jebba: /* NAT */ howtolet

jebba — Sun, 03 Jan 2010 05:44:32 GMT

NAT: howtolet

← Older revision		Revision as of 05:44, 3 January 2010
Line 1:		Line 1:
	=NAT=		=NAT=
	This is a micro HOWTO, perhaps someday to be longer about how to turn your N900 into a wifi hotspot. In other words, you connect to the Internet via the GPRS (telephone data) connection, then share your connection via wifi with everyone within reach. :)		This is a micro HOWTO, perhaps someday to be longer about how to turn your N900 into a wifi hotspot. In other words, you connect to the Internet via the GPRS (telephone data) connection, then share your connection via wifi with everyone within reach. :)
		+
		+
		+	==kernel==
		+	You will need a kernel with NAT modules. I have one available. See my [[User:Jebba/Kernel#Installing_my_custom_kernel\|installing my custom kernel]] to get a usable kernel if you don't feel like building one. The 2.6.28-omap1-jebba6 kernel is known to work (2.6.28-20094102.3+0m11).
		+
		+
		+	==iptables / iwconfig==
		+	You need iptables and iwconfig to use this script. Thankfully they are in the extras-devel repository:
		+
		+	apt-get install iptables wireless-tools
		+
		+
		+	==freemoe-nat==
		+	Create and run this script:

	#!/bin/sh		#!/bin/sh
Line 25:		Line 39:
	sudo ifconfig wlan0 up		sudo ifconfig wlan0 up
	sudo iwconfig wlan0 essid freemoe		sudo iwconfig wlan0 essid freemoe
-	sudo ifconfig wlan0 10.0.0.22 netmask 255.255.255.0 up	+	sudo ifconfig wlan0 10.0.0.1 netmask 255.255.255.0 up
		+
		+
		+	==Set up Guests==
		+	Right now the above doesn't provide DHCP or DNS services, which means you have to set up a static IP and set up DNS in your clients. Just use a static IP from 10.0.0.2 to 10.0.0.254, use 8.8.8.8 for your DNS servers, and set your gateway to 10.0.0.1. You'll need to set your client in ad-hoc mode and use ESSID freemoe.

jebba: initial script

jebba — Sun, 03 Jan 2010 05:37:49 GMT

initial script

New page

=NAT=
This is a micro HOWTO, perhaps someday to be longer about how to turn your N900 into a wifi hotspot. In other words, you connect to the Internet via the GPRS (telephone data) connection, then share your connection via wifi with everyone within reach. :)

#!/bin/sh
# Run this script to share your Internet connection.
# Activate your gprs0 (fone data) connection with the GUI
# Then run this :)

set -x

# insert masquerade module
sudo modprobe ipt_MASQUERADE

# flush old rules
sudo iptables -F
sudo iptables -t nat -F

sudo iptables -t nat -A POSTROUTING -o gprs0 -j MASQUERADE

# forward IPs
echo -n 1 | sudo tee /proc/sys/net/ipv4/ip_forward

sudo ifconfig wlan0 down
sudo iwconfig wlan0 mode ad-hoc
sudo ifconfig wlan0 up
sudo iwconfig wlan0 essid freemoe
sudo ifconfig wlan0 10.0.0.22 netmask 255.255.255.0 up

User:Jebba/NAT - Revision history

jebba: /* NAT */ howtolet

jebba: initial script