Hi All Trying to setup a FTP server behind a WRT54G. The WRT54G is connected to the net via ADSL modem in half bridge mode (ie handles PPPoE, bridges IP packets so the WRT is assigned its WAN IP from the ISP's DHCP). I've opened up port 21 on the FTP box (running fedora core 4) and it works fine if I FTP in from a windows machine on the LAN. It also appears to work fine via the windows machine if I use the web address (dynamic DNS, confirmed OK via telnet tests to router - I've turned this off now!). However testing from another site failed, couldn't even connect. I've forwarded port 20-22 (FTP + SSH) on the Linksys to the lan IP of the FTP box, but I'm thinking I might need to configure the firewall on the linux box further (e.g. the high ports that FTP uses)? Would this be done via the command line on the router, and what commands do I use? (what firewall is it? Iptables? Ipchains? etc.) Any advice would be appreciated.