My home setup is a Linksys WRT54G reflashed with Sveasoft Alchemy3.37. Various devices use the wireless and wired router ports.
What's the best way for me to setup an additional access point that's open to visitors for internet use but they can't see the rest of my network? I would still need to keep the existing secured AP.
All I can think of so far is I've got an old Adaptec wireless access point designed to extend wired Ethernet networks to wireless-enabled devices. Haven't used it for a while but I think it's a fairly dumb box. If I plugged it into a spare wired port on the Linksys it would offer a new AP and appear as a local IP address to the rest of the network. I don't understand how VLAN's work but the Linksys can support them so it could be on its own VLAN if necessary. I can SSH into the Linksys box and change its IPtables rules and other commandline stuff, not that I know how to use IPtables or what it is capable of.
So does any of this help me achieve an additional separate open AP? The only other thing I can think of is add a PC running a software firewall into the equation and I don't really want to do that on grounds of noise, space, heat, etc.