7 lines
252 B
Groff
7 lines
252 B
Groff
# $NetBSD: example.6,v 1.1.1.1 2012/03/23 21:20:15 christos Exp $
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#
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# block all TCP packets with only the SYN flag set (this is the first
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# packet sent to establish a connection) out of the SYN-ACK pair.
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#
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block in proto tcp from any to any flags S/SA
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