iptables -N IPTVFORWARD
iptables -A FORWARD -j IPTVFORWARD
- # filtering from GUI
- iptables -N GUIINPUT
- iptables -A INPUT -j GUIINPUT
- iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
+ # Allow to ping the firewall.
+ iptables -N ICMPINPUT
+ iptables -A INPUT -j ICMPINPUT
+ iptables -A ICMPINPUT -p icmp --icmp-type 8 -j ACCEPT
# Accept everything on loopback
iptables -N LOOPBACK
iptables -A ${i} -j CONNTRACK
done
+ # Allow DHCP
+ iptables -N DHCPINPUT
+ iptables -A DHCPINPUT -p udp --sport 68 --dport 67 -j ACCEPT
+ iptables -A DHCPINPUT -p tcp --sport 68 --dport 67 -j ACCEPT
+
+ iptables -N DHCPOUTPUT
+ iptables -A DHCPOUTPUT -p udp --sport 67 --dport 68 -j ACCEPT
+ iptables -A DHCPOUTPUT -p tcp --sport 67 --dport 68 -j ACCEPT
+
+ # Allow DHCP on GREEN
+ iptables -N DHCPGREENINPUT
+ iptables -N DHCPGREENOUTPUT
+ if [ -n "${GREEN_DEV}" ]; then
+ iptables -A INPUT -i "${GREEN_DEV}" -j DHCPGREENINPUT
+ iptables -A OUTPUT -o "${GREEN_DEV}" -j DHCPGREENOUTPUT
+ fi
+
+ # allow DHCP on BLUE to be turned on/off
+ iptables -N DHCPBLUEINPUT
+ iptables -N DHCPBLUEOUTPUT
+ if [ -n "${BLUE_DEV}" ]; then
+ iptables -A INPUT -i "${BLUE_DEV}" -j DHCPBLUEINPUT
+ iptables -A OUTPUT -o "${BLUE_DEV}" -j DHCPBLUEOUTPUT
+ fi
+
# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
iptables -N IPSECINPUT
iptables -N IPSECFORWARD
iptables -t nat -A POSTROUTING -j IPSECNAT
# localhost and ethernet.
- iptables -A INPUT -i $GREEN_DEV -m conntrack --ctstate NEW -j ACCEPT ! -p icmp
-
- # allow DHCP on BLUE to be turned on/off
- iptables -N DHCPBLUEINPUT
- iptables -A INPUT -j DHCPBLUEINPUT
-
+ # Always allow accessing the web GUI from GREEN.
+ iptables -N GUIINPUT
+ iptables -A INPUT -j GUIINPUT
+ iptables -A GUIINPUT -i "${GREEN_DEV}" -p tcp --dport 444 -j ACCEPT
+
# WIRELESS chains
iptables -N WIRELESSINPUT
iptables -A INPUT -m conntrack --ctstate NEW -j WIRELESSINPUT