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File: [local] / src / share / pf / Attic / faq-example1 (download)
Revision 1.4, Fri Jun 16 17:26:59 2006 UTC (17 years, 11 months ago) by jasper
sync with faq; yayayaya henning@ |
# $OpenBSD: faq-example1,v 1.4 2006/06/16 17:26:59 jasper Exp $ # # Firewall for Home or Small Office # http://www.openbsd.org/faq/pf/example1.html # # macros ext_if="fxp0" int_if="xl0" tcp_services="{ 22, 113 }" icmp_types="echoreq" comp3="192.168.0.3" # options set block-policy return set loginterface $ext_if set skip on lo # scrub scrub in # nat/rdr nat on $ext_if from !($ext_if) -> ($ext_if:0) nat-anchor "ftp-proxy/*" rdr-anchor "ftp-proxy/*" rdr pass on $int_if proto tcp to port ftp -> 127.0.0.1 port 8021 rdr on $ext_if proto tcp from any to any port 80 -> $comp3 # filter rules block in pass out keep state anchor "ftp-proxy/*" antispoof quick for { lo $int_if } pass in on $ext_if inet proto tcp from any to ($ext_if) \ port $tcp_services flags S/SA keep state pass in on $ext_if inet proto tcp from any to $comp3 port 80 \ flags S/SA synproxy state pass in inet proto icmp all icmp-type $icmp_types keep state pass quick on $int_if