firewall: Explicitely allow DHCP messages.

[people/teissler/ipfire-2.x.git] / src / initscripts / init.d / firewall

diff --git a/src/initscripts/init.d/firewall b/src/initscripts/init.d/firewall
index f0d9c492adc9bff9844fc41bc6968d82532a92c4..83717811010da5f1f89c16aa8b7b6ed020ee1b89 100644 (file)
--- a/src/initscripts/init.d/firewall
+++ b/src/initscripts/init.d/firewall
@@ -143,6 +143,31 @@ iptables_init() {
                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
@@ -155,11 +180,7 @@ iptables_init() {
 
        # 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
-       
+
        # WIRELESS chains
        iptables -N WIRELESSINPUT
        iptables -A INPUT -m conntrack --ctstate NEW -j WIRELESSINPUT