I'd need a good/strong configured firewall for an IRC-Server.
The only things that should work are ssh/ftp, the IRC-Ports 6667-6669 and maybe sendmail.
Is it also possible to limit the bandwidth to 56k per IP too?
I don't know if ICMP echo/request is needed for IRC/ssh/ftp, if not I would like to accept this echoes only for a subnet like 18.104.22.168/15.
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Learn how to get help with Linux/Unix bash shell commands.
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