Re: How do I keep my server off the net? -
07-03-2004
Than simply block all UDP traffic for the server port - in and out. And have a look at the HL readme.txt, there are some other ports involved too which you might need to block.
Or even better:
Block everything and allow only those ports you really require:
DNS: UDP 53
WWW: TCP 80 and TCP 443
SMTP: TCP 25
POP3: TCP 110
IMAP: TCP 143
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