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"All that a firewall does is to block traffic on specific ports"
Thats an understement. Firewalls "filter" traffic and not block per-say. Firewalls can also manipulate data (nat). Filters can be done on the many aspects of a data packet, such as source/desination IP or ports, TTL, TOS, packet length, packet type, data contained, etc.
Most viruses/hacks seem to come in through ports other than 80 like TCP1443 (Blaster), UDP137-139, RPC, messager, etc.
Learn to love your firewall. It'll save your life (or your job). - Posted by: in-DUH-vidual Posted on: 01/15/04 You are currently: a Guest | Members login | Terms of Use
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