X-Git-Url: https://git.distorted.org.uk/~mdw/firewall/blobdiff_plain/00851a0a72356001e40304879907b9ecec8ce588..961148a5388760756ab37b897576eec33edbd3a9:/vampire.m4

diff --git a/vampire.m4 b/vampire.m4
index e7114cf..e378447 100644
--- a/vampire.m4
+++ b/vampire.m4
@@ -1,4 +1,4 @@
-### -*-m4-*-
+### -*-sh-*-
 ###
 ### Firewall configuration for vampire
 ###
@@ -22,16 +22,25 @@
 ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 ###--------------------------------------------------------------------------
+### Config settings.
+
+## This router is involved in a routing asymmetry.
+setconf(rp_filter, 0)
+setconf(log_martians, 0)
+
+###--------------------------------------------------------------------------
 ### Network interfaces.
 
 m4_divert(44)m4_dnl
 ## Interface definitions.
-if_untrusted=eth0.1
-if_trusted=eth0.0
+if_dmz=eth0.0
+if_trusted=eth0.1
+if_safe=$if_dmz,$if_trusted
+if_untrusted=eth0.3
 if_vpn=vpn-+
 if_iodine=dns+
-if_its_mz=eth0.0
-if_its_pi=eth0.0
+if_its_mz=$if_dmz,$if_trusted
+if_its_pi=$if_dmz,$if_trusted
 
 m4_divert(-1)
 ###--------------------------------------------------------------------------
@@ -58,22 +67,17 @@ allowservices inbound udp \
 	gnutella_svc \
 	i2p
 
-## Provide DNS resolution to local untrusted hosts.
-for p in tcp udp; do
-  run iptables -A inbound -j ACCEPT \
-	  -s 172.29.198.0/24 \
-	  -p $p --destination-port $port_dns
-done
+## Extend some services to local untrusted hosts.
+clearchain inbound-untrusted
+run iptables -A inbound -j inbound-untrusted \
+	-s 172.29.198.0/24
 
-## Allow smb and nmb to untrusted hosts.  This is a bit experimental.
-run iptables -A inbound -j ACCEPT \
-	-s 172.29.198.0/24 \
-	-p udp -m multiport --destination-ports \
-		$port_netbios_ns,$port_netbios_dgm
-run iptables -A inbound -j ACCEPT \
-	-s 172.29.198.0/24 \
-	-p tcp -m multiport --destination-ports \
-		$port_netbios_ssn,$port_microsoft_ds
+allowservices inbound-untrusted tcp \
+	dns \
+	netbios_ssn microsoft_ds
+allowservices inbound-untrusted udp \
+	dns \
+	tftp
 
 ## Provide syslog for evolution.
 run iptables -A inbound -j ACCEPT \
@@ -86,7 +90,7 @@ run iptables -A OUTPUT -m multiport \
 
 ## Other interesting things.
 dnsresolver inbound
-ntpclient inbound 158.152.1.76 158.152.1.204 194.159.253.2
+ntpclient inbound $ntp_servers
 
 m4_divert(-1)
 ###----- That's all, folks --------------------------------------------------