in WLan OpenWRT ~ read.

Other resources

Seattle Wireless - LinksysWrt54g
Snort on the WRT54G
Linux on the WRT54G
Linksys WRT54 Hardware Versions Under the Knife-the definitive guide
How-To: recover from a bad firmware flash
DD-WRT - this firmware based on Alchemy 6RC5a
Openwrt howto german
OpenWRT Website
Journal of TheIndividual
Hardware supported by OpenWRT
Memoryupgrade for some Wrt54G V2 and for V2.2?!?
JTAG access to WRT flash
Need JTAG help!
Bricked (?) WRT54G v1.0 gives odd ping times
Linksys WRT54G/WRT54GS Dual Serial Port Mod
WRT54G: Single-port Serial Modification
Linksys WRT54G/WRT54GS RS232 Dual Serial Port / Console Mod
Konsolenanschluss¸ für Linksys WRT54G Version 2
A serial port adapter for the Linksys WRT54G/WRT54GS router