ipsec-policy: Permit GRE traffic for GRE connections

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/config/firewall/ipsec-policy b/config/firewall/ipsec-policy
index 53384fc5de104efedffb844fb7c1775f71d09852..32d171f353e48f23add9c659eb530bb01b6a19c6 100644 (file)
--- a/config/firewall/ipsec-policy
+++ b/config/firewall/ipsec-policy
@@ -82,6 +82,19 @@ install_policy() {
                # Check if this a net-to-net connection
                [ "${type}" = "net" ] || continue
 
+               # Install permissions for GRE traffic
+               case "${interface_mode}" in
+                       gre)
+                               if [ -n "${remote}" ]; then
+                                       iptables -A IPSECINPUT -p gre \
+                                               -s "${remote}" -j ACCEPT
+
+                                       iptables -A IPSECOUTPUT -p gre \
+                                               -d "${remote}" -j ACCEPT
+                               fi
+                               ;;
+               esac
+
                # Split multiple subnets
                rightsubnets="${rightsubnets//\|/ }"