We're going to need very basic code that you have, and errors, showing clearly what the error is and where it happens.
If the server is blocking a protocol or port, ask the sysadmin to unblock it. There are several firewalls for Linux, iptables is only one.
(I'm just learning to admin and setup Ubuntu.)
What is the OS name and version of the server?
Perl 5.8.8 on Redhat Linux RHEL 5.5.56 (64-bit)
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