Advanced Firewall Blocking Through FTP Traffic (RRAS)

[Allen 'GhosT' Waldrop]

I have a basic RRAS Setup, One nic on WAN, one on LAN. Everything seems to be working ok with traffic routing except FTP. On the server if I try to FTP to a remote site it works, however clients behind the server are unable to connect using FTP. if I disable the Firewall on the Server, the clients are able to use FTP to connect to remote servers. (Pass-through the local server via RRAS/NAT) Once the Firewall is re-enabled it stops again.

Sample log:

Status: Waiting to retry...
Status: Resolving address of someftpserver.com
Status: Connecting to 1.1.1.1:21...
Error: Connection timed out
Error: Could not connect to server


I can only assume there is some setting in the firewall that i'm missing. I don't recall needing to change anything in Server 2008 R2 to allow pass-through FTP traffic.



Allen 'GhosT' Waldrop

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