Restoring Firmware WRT54GL from TomatoRAF

flashing
to new look

For some reason, WRT54GL's TomatoRaf, I returned to the original firmware. Its web interface of new firmware have a little different from when its first look two years ago. 

Firmware upgrade (I said "downgrade"), is very easy, but be careful not to interrupt the router or do not "close the browser". You can see simplified step by step here:

Lightning Arrester: Save Your Networking Devices

Today, my friend took 3 pieces networking devices: 2 pcs TP-Link modem router ADSL, 1 pcs Dlink switch. He said that networking devices burnt, got lightning.

TP LINK TL WR841ND AP+ROUTER

This is access point + router TP-Link TL WR841ND . There is power ON/OFF button in back side. 1 WAN port, 4 LAN port. Web interface so simple. Default IP setting 192.168.1.1, with username and password: admin.

TP-Link TL-WN350GD WLAN PCI Adapter on Ubuntu 10.04

Here it is, wlan adapters that can be directly detected  by Ubuntu 10.04.

The first  in order for students to recognize other types of WLAN adapters we decided to buy TL-WN350GD three units.

Cheap less around $10/pcs. About durabilty: just wait ...

WLAN Adapter PCI DLink DWA 525 on Ubuntu 10.04

Last few months ago we purchased this adapter DLink DWA 525, 7 pieces with a higher price than TP Link, to test students' competence. We hope that with a higher price, it can be high quality and easily to be installed but unfortunately an adapter can not be directly detected properly by Ubuntu 10.04 (LTS). Finally it could be installed properly after visiting the ubuntu forums.

Bandwidth Limiter WRT54GL with TomatoRAF

It's so easy to make your AP+Router WRT54GL (default firmware linksys) as bandwidth limiter, you can try firmware TomatoRAF (tomato victek, wikipedia, based on Tomato standard).  So don't be affraid you brick your router as long as you follow the right instructions.

Ubuntu/Debian Internet Gateway for Internet Connections Sharing

Two lines of commands to activating Internet Gateway on Ubuntu/Debian for desktop computer has 2 NIC (network interface card). This function will gone after you restart the computer.

#echo 1 > /proc/sys/net/ipv4/ip_forward
#iptables -t nat -A POSTROUTING -j MASQUERADE

Internet Sharing Connections (ICS) on Ubuntu

First you must have GSM/CDMA Broadband Internet  from any modems on active 

Very simple to make your computer as Internet Connections Sharing (ICS) on Ubuntu

This is sharing internet to wired (LAN), you just edit ipv4 Settings.

Now you can share internet to others via crossover cable (one computer) or (more computers) via hub