27 lines
752 B
Groff
27 lines
752 B
Groff
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# $NetBSD: example.5,v 1.1.1.1 1999/12/11 22:24:11 veego Exp $
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#
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# test ruleset
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#
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# allow packets coming from foo to bar through.
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#
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pass in from 10.1.1.2 to 10.2.1.1
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#
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# allow any TCP packets from the same subnet as foo is on through to host
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# 10.1.1.2 if they are destined for port 6667.
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#
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pass in proto tcp from 10.2.2.2/24 to 10.1.1.2/32 port = 6667
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#
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# allow in UDP packets which are NOT from port 53 and are destined for
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# localhost
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#
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pass in proto udp from 10.2.2.2 port != 53 to localhost
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#
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# block all ICMP unreachables.
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#
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block in proto icmp from any to any icmp-type unreach
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#
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# allow packets through which have a non-standard IP header length (ie there
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# are IP options such as source-routing present).
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#
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pass in from any to any with ipopts
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