Berkeley CSUA MOTD:Entry 15856
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2025/07/10 [General] UID:1000 Activity:popular
7/10    

1999/5/22 [Computer/SW/Unix] UID:15856 Activity:moderate
5/21    Beside ftp, what other network services don't work behind firewalls
        and why?
        \_ Please don't delete this. I'm planning on setting up a firewall
           myself.
        \_ Er, depends on the firewall and its configuration.  And as for
           why:  they're blocked on the firewall.  -John
           \_ Not just blocked services but there are services (like ftp)
              that won't allow machines behind a firewall to use that service
              due to implementation reasons.
                \_ As for ftp, you can always use pftp (passive mode). If
                   you don't have pftp, just do what Real Men do, telnet into
                   the ftp server on port 21 and issue the PASV command.
        \_ Any process which has a callback mechanism.  For example:
           Quake, IRC, Real Audio, cuseeme, ftp. -- nickkral
                \_ Don't forget ICQ! I just love my firewall since it
                   keeps the grubbing interns from chatting with thier
                   friends on company time!
                   \_ AIM! AIM!
                \_ It all depends on the firewall and it's configuration.
                        Some setups will let any & all of the above work.
2025/07/10 [General] UID:1000 Activity:popular
7/10    

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