52 lines
932 B
Plaintext
52 lines
932 B
Plaintext
# $FreeBSD$
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# $OpenBSD: faq-example1,v 1.5 2006/10/07 04:48:01 mcbride Exp $
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#
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# Firewall for Home or Small Office
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# http://www.openbsd.org/faq/pf/example1.html
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#
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# macros
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ext_if="fxp0"
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int_if="xl0"
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tcp_services="{ 22, 113 }"
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icmp_types="echoreq"
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comp3="192.168.0.3"
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# options
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set block-policy return
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set loginterface $ext_if
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set skip on lo
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# scrub
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scrub in
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# nat/rdr
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nat on $ext_if from !($ext_if) -> ($ext_if:0)
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nat-anchor "ftp-proxy/*"
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rdr-anchor "ftp-proxy/*"
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rdr pass on $int_if proto tcp to port ftp -> 127.0.0.1 port 8021
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rdr on $ext_if proto tcp from any to any port 80 -> $comp3
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# filter rules
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block in
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pass out
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anchor "ftp-proxy/*"
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antispoof quick for { lo $int_if }
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pass in on $ext_if inet proto tcp from any to ($ext_if) port $tcp_services
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pass in on $ext_if inet proto tcp from any to $comp3 port 80 \
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synproxy state
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pass in inet proto icmp all icmp-type $icmp_types
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pass quick on $int_if no state
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