X-Git-Url: https://git.distorted.org.uk/~mdw/firewall/blobdiff_plain/994ac8d0782c89a636f47b02a2dc096c72ff58c5..bf63c594388914a69c14796d36f872d5e0fa4798:/local.m4

diff --git a/local.m4 b/local.m4
index c16f94e..d29ecc9 100644
--- a/local.m4
+++ b/local.m4
@@ -27,7 +27,7 @@
 m4_divert(6)m4_dnl
 ## Default NTP servers.
 defconf(ntp_servers,
-	"158.152.1.76 158.152.1.204 194.159.253.2 195.173.57.232")
+	"81.187.26.174 90.155.23.205 2001:8b0:0:23::205 185.73.44.6 2001:ba8:0:2c06::")
 
 m4_divert(-1)
 ###--------------------------------------------------------------------------
@@ -110,11 +110,12 @@ m4_divert(-1)
 
 ## Define the available network classes.
 m4_divert(42)m4_dnl
-defnetclass scary	scary		trusted		    mcast
-defnetclass untrusted	scary untrusted trusted		    mcast
-defnetclass trusted	scary untrusted trusted safe noloop mcast
-defnetclass safe			trusted safe noloop mcast
-defnetclass noloop			trusted safe	    mcast
+defnetclass scary	scary		trusted		    vpnnat mcast
+defnetclass untrusted	scary untrusted trusted			   mcast
+defnetclass trusted	scary untrusted trusted safe noloop vpnnat mcast
+defnetclass safe			trusted safe noloop vpnnat mcast
+defnetclass noloop			trusted safe		   mcast
+defnetclass vpnnat	scary		trusted safe		   mcast
 
 defnetclass link
 defnetclass mcast
@@ -223,6 +224,7 @@ defhost precision
 	iface vpn-radius housebdry vpn sgo
 	iface vpn-chiark sgo
 	iface vpn-national upn
+	iface vpn-mdwdev upn
 	iface vpn-+ vpn
 defhost telecaster
 	iface eth0 jump colo
@@ -243,6 +245,7 @@ defnet hub virtual
 	via housebdry colobdry
 defnet sgo noloop
 	addr !172.29.198.0/23
+	addr !10.165.27.0/24
 	addr 10.0.0.0/8
 	addr 172.16.0.0/12
 	addr 192.168.0.0/16
@@ -254,7 +257,7 @@ defnet vpn trusted
 	host terror 2 ::2:1
 	host orange 3 ::3:1
 	host haze 4 ::4:1
-	host groove 5 ::5:1
+	host spirit 9 ::9:1
 defnet anycast trusted
 	addr 172.29.199.224/27 2001:ba8:1d9:0::/64
 	via dmz unsafe safe untrusted jump colo vpn
@@ -267,6 +270,7 @@ defnet upn untrusted
 	addr 172.29.198.160/27 2001:ba8:1d9:a000::/64
 	via colohub
 	host national 1 ::1:1
+	host mdwdev 2 ::2:1
 
 ## Linode hosts.
 defhost national
@@ -274,13 +278,13 @@ defhost national
 	iface vpn-precision colohub
 
 ## Satellite networks.
-defnet binswood noloop
+defnet binswood vpnnat
 	addr 10.165.27.0/24
 	via colohub
 defhost mango
 	hosttype router
 	iface eth0 binswood default
-	iface vpn-precision colo
+	iface vpn-precision colo default
 
 m4_divert(80)m4_dnl
 ###--------------------------------------------------------------------------
@@ -354,11 +358,29 @@ case $forward in
     ;;
 esac
 
+m4_divert(82)m4_dnl
+###--------------------------------------------------------------------------
+### Check for source routing.
+
+clearchain check-srcroute
+
+run iptables -A check-srcroute -g forbidden \
+    -m ipv4options --any --flags lsrr,ssrr
+run ip6tables -A check-srcroute -g forbidden \
+    -m rt
+
+for c in INPUT FORWARD; do
+  for m in $from_scary $from_untrusted; do
+    run ip46tables -A $c -m mark --mark $m/$MASK_FROM -j check-srcroute
+  done
+done
+
 m4_divert(84)m4_dnl
 ###--------------------------------------------------------------------------
 ### Locally-bound packet inspection.
 
 clearchain inbound
+clearchain inbound-untrusted
 
 ## Track connections.
 commonrules inbound
@@ -382,6 +404,10 @@ m4_divert(88)m4_dnl
 openports inbound
 
 ## Inspect inbound packets from untrusted sources.
+run iptables -A inbound -s 172.29.198.0/24 -g inbound-untrusted
+run ip6tables -A inbound -s 2001:8b0:c92:8000::/49 -g inbound-untrusted
+run ip6tables -A inbound -s 2001:ba8:1d9:8000::/49 -g inbound-untrusted
+run ip46tables -A inbound-untrusted -g forbidden
 run ip46tables -A inbound -g forbidden
 run ip46tables -A INPUT -m mark --mark $from_scary/$MASK_FROM -g inbound
 run ip46tables -A INPUT -m mark --mark $from_untrusted/$MASK_FROM -g inbound