problem:
I have servers:
Server1(172.16.16.10)
Server2(172.16.16.20)
Server3(172.16.16.30)

I need Redirect packets From Server2 to the Server3 if
Source=172.16.16.10
proto=tcp
dstport=25

Fore Example:
Fromethe console Server1 i do:
telnet 172.16.16.20 25
and Server2 redirect this SMTP packets to the 172.16.16.30:25
and Telnet connected to the SMTP server on the server 172.16.16.30

Please, Help me.

Serg