WRT54GL and click the disable wifi option ? Smoothwall/M0n0wall ?
In other words, it sucks. I hate to sound like some sort of Linux fanboy but your best bet is to get a nice small PC from the Pentium 3 era, put two proper NICs in (like Intels) and run m0n0wall on it.Throughput: Up to 11.5 Mbps WAN-to-LAN,
up to 2.1 Mbps for 3DES throughput