Hi, I have a customer who is try to give me access to some data for testing, on one of their server, port 5000.

If I telnet to their port from my server, I can't get a connection, unless I disable my firewall - not something I like to do.

If I look at a tcpdump for port 5000, I can see the connection going out to the internet (5000 is enable in my firewall), and I can see that the masquerading ports are in the same range as when I send SMTP or HTTP packets - which work fine.

Any ideas what else can be causing the problem?

I'm using Guarddog to configure the iptables.

Many thanks.

Stuart.