OpenBSD: pf

files.sh

@@ -54,6 +54,7 @@ fi
 if [ "$PREFIX" = 'openbsd' ]; then
 echo
 install_file openbsd root wheel      644 '/etc/man.conf'
+install_file openbsd root wheel      644 '/etc/pf.conf'
 install_dir          root wheel      755 '/etc/profile.d'
 install_file openbsd root wheel      644 '/etc/profile.d/autotools.sh'
 install_file openbsd root wheel      644 '/etc/shells'

openbsd/etc/pf.conf

@@ -0,0 +1,43 @@
+#	$OpenBSD: pf.conf,v 1.4 2018/07/10 19:28:35 henning Exp $
+#
+# See pf.conf(5) for syntax and examples.
+# Remember to set net.inet.ip.forwarding=1 and/or net.inet6.ip6.forwarding=1
+# in /etc/sysctl.conf if packets are to be forwarded between interfaces.
+
+# increase default state limit from 100'000 states on busy systems
+#set limit states 500000
+
+set skip on lo
+
+# filter rules and anchor for ftp-proxy(8)
+#anchor "ftp-proxy/*"
+#pass in quick inet proto tcp to port ftp divert-to 127.0.0.1 port 8021
+
+# anchor for relayd(8)
+#anchor "relayd/*"
+
+block return	# block stateless traffic
+pass		# establish keep-state
+
+# rules for spamd(8)
+#table <spamd-white> persist
+#table <nospamd> persist file "/etc/mail/nospamd"
+#pass in on egress inet proto tcp from any to any port smtp \
+#    divert-to 127.0.0.1 port spamd
+#pass in on egress proto tcp from <nospamd> to any port smtp
+#pass in log on egress proto tcp from <spamd-white> to any port smtp
+#pass out log on egress proto tcp to any port smtp
+
+
+#block in quick from urpf-failed to any	# use with care
+
+# rules for vmd(8) - NAT and DNS forwarding for VMs (100.64.0.0/10 default)
+pass out on egress from 100.64.0.0/10 to any nat-to (egress)
+pass in proto udp from 100.64.0.0/10 to any port domain \
+    rdr-to 1.1.1.1 port domain
+
+# By default, do not permit remote connections to X11
+block return in on ! lo0 proto tcp to port 6000:6010
+
+# Port build user does not need network
+block return out log proto {tcp udp} user _pbuild