i've enabled FTP server using guide from here
with port forwarding, i enabled ftp server both for WAN and LAN using default FTP port.
i'm using ftp server to display conten on my usb disk
so far i successfully accessing ftp using both local ip address as well WAN IP address, but only with pc that hooked up to router, but i can't access it from other network (such as from cell phone, or using FTP tester sites). message from ftp tester sites clearly showing that port 21 isn' responding…
what have i done wrong? does my isp block FTP? or is it firewall problem, i see that firewall GUI in tomato usb doesn't offer much
Yes, do NOT port forward for build-in FTP server - this actually can (and most probably will) screw up the FTP WAN access.
If it's not working for you without port forwarding, you may have added some other conflicting firewall rules, or - most probably - you're testing WAN FTP access from the computer inside your LAN while trying to use external WAN IP (very common mistake - it won't work unless you set NAT Loopback setting to "All").