Remove from Input chain, changed order of the filters since

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

diff --git a/src/initscripts/init.d/firewall b/src/initscripts/init.d/firewall
index aca835736228e053f91c72bbc572c4e6dcedfcb5..366ae071c83f52e20598991997f0799c413b7e6a 100644 (file)
--- a/src/initscripts/init.d/firewall
+++ b/src/initscripts/init.d/firewall
@@ -2,6 +2,7 @@
 
 eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings)
 eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
+eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
 IFACE=`/bin/cat /var/ipfire/red/iface 2> /dev/null | /usr/bin/tr -d '\012'`
 
 if [ -f /var/ipfire/red/device ]; then
@@ -33,17 +34,21 @@ iptables_init() {
        # This chain will log, then DROPs packets with certain bad combinations
        # of flags might indicate a port-scan attempt (xmas, null, etc)
        /sbin/iptables -N PSCAN
-       /sbin/iptables -A PSCAN -p tcp  -m limit --limit 10/minute -j LOG --log-prefix "TCP Scan? "
-       /sbin/iptables -A PSCAN -p udp  -m limit --limit 10/minute -j LOG --log-prefix "UDP Scan? "
-       /sbin/iptables -A PSCAN -p icmp -m limit --limit 10/minute -j LOG --log-prefix "ICMP Scan? "
-       /sbin/iptables -A PSCAN -f      -m limit --limit 10/minute -j LOG --log-prefix "FRAG Scan? "
-       /sbin/iptables -A PSCAN -j DROP
+       if [ "$DROPPORTSCAN" == "on" ]; then
+               /sbin/iptables -A PSCAN -p tcp  -m limit --limit 10/minute -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan"
+               /sbin/iptables -A PSCAN -p udp  -m limit --limit 10/minute -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan"
+               /sbin/iptables -A PSCAN -p icmp -m limit --limit 10/minute -j LOG --log-prefix "DROP_ICMP Scan " -m comment --comment "DROP_ICMP PScan"
+               /sbin/iptables -A PSCAN -f      -m limit --limit 10/minute -j LOG --log-prefix "DROP_FRAG Scan " -m comment --comment "DROP_FRAG PScan"
+       fi
+       /sbin/iptables -A PSCAN -j DROP -m comment --comment "DROP_PScan"
 
        # New tcp packets without SYN set - could well be an obscure type of port scan
        # that's not covered above, may just be a broken windows machine
        /sbin/iptables -N NEWNOTSYN
-       /sbin/iptables -A NEWNOTSYN  -m limit --limit 10/minute -j LOG  --log-prefix "NEW not SYN? "
-       /sbin/iptables -A NEWNOTSYN  -j DROP
+       if [ "$DROPNEWNOTSYN" == "on" ]; then
+               /sbin/iptables -A NEWNOTSYN  -m limit --limit 10/minute -j LOG  --log-prefix "DROP_NEWNOTSYN "
+       fi
+       /sbin/iptables -A NEWNOTSYN  -j DROP -m comment --comment "DROP_NEWNOTSYN"
 
        # Chain to contain all the rules relating to bad TCP flags
        /sbin/iptables -N BADTCP
@@ -96,8 +101,7 @@ iptables_red() {
                # This rule enables a host on ORANGE network to connect to the outside
                # (only if we have a red connection)
                if [ "$IFACE" != "" ]; then
-                       /sbin/iptables -A REDFORWARD -i $ORANGE_DEV -p tcp -o $IFACE -j ACCEPT
-                       /sbin/iptables -A REDFORWARD -i $ORANGE_DEV -p udp -o $IFACE -j ACCEPT
+                       /sbin/iptables -A REDFORWARD -i $ORANGE_DEV -o $IFACE -j ACCEPT
                fi
        fi
 
@@ -112,7 +116,8 @@ iptables_red() {
                        /sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
                fi
 
-               # Outgoing masquerading
+               # Outgoing masquerading (don't masqerade IPSEC (mark 50))
+               /sbin/iptables -t nat -A REDNAT -m mark --mark 50 -o $IFACE -j RETURN
                /sbin/iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE
 
        fi
@@ -127,7 +132,7 @@ case "$1" in
        # original do nothing line
        #/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 10/sec
        # the correct one, but the negative '!' do nothing...
-       #/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit ! --limit 10/sec -j DROP
+       #/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN ! -m limit --limit 10/sec -j DROP
 
        # Fix for braindead ISP's
        /sbin/iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
@@ -135,30 +140,51 @@ case "$1" in
        # CUSTOM chains, can be used by the users themselves
        /sbin/iptables -N CUSTOMINPUT
        /sbin/iptables -A INPUT -j CUSTOMINPUT
+       /sbin/iptables -N GUARDIANINPUT
+       /sbin/iptables -A INPUT -j GUARDIANINPUT
        /sbin/iptables -N CUSTOMFORWARD
        /sbin/iptables -A FORWARD -j CUSTOMFORWARD
        /sbin/iptables -N CUSTOMOUTPUT
        /sbin/iptables -A OUTPUT -j CUSTOMOUTPUT
+       /sbin/iptables -N OUTGOINGFW
+       /sbin/iptables -N OUTGOINGFWMAC
+       /sbin/iptables -A OUTPUT -j OUTGOINGFW
        /sbin/iptables -t nat -N CUSTOMPREROUTING
        /sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
        /sbin/iptables -t nat -N CUSTOMPOSTROUTING
        /sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
 
+       # IPTV chains for IGMPPROXY
+       /sbin/iptables -N IPTVINPUT
+       /sbin/iptables -A INPUT -j IPTVINPUT
+       /sbin/iptables -N IPTVFORWARD
+       /sbin/iptables -A FORWARD -j IPTVFORWARD
+
        # filtering from GUI
        /sbin/iptables -N GUIINPUT
        /sbin/iptables -A INPUT -j GUIINPUT
+       /sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
 
        # Accept everything connected
        /sbin/iptables -A INPUT   -m state --state ESTABLISHED,RELATED -j ACCEPT
        /sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
        
        # trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
-       /sbin/iptables -N IPSECVIRTUAL
+       /sbin/iptables -N IPSECINPUT
+       /sbin/iptables -N IPSECFORWARD
+       /sbin/iptables -N IPSECOUTPUT
        /sbin/iptables -N OPENSSLVIRTUAL
-       /sbin/iptables -A INPUT -j IPSECVIRTUAL
-       /sbin/iptables -A INPUT -j OPENSSLVIRTUAL
-       /sbin/iptables -A FORWARD -j IPSECVIRTUAL
-       /sbin/iptables -A FORWARD -j OPENSSLVIRTUAL
+       /sbin/iptables -A INPUT -j IPSECINPUT
+       /sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
+       /sbin/iptables -A FORWARD -j IPSECFORWARD
+       /sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
+       /sbin/iptables -A OUTPUT -j IPSECOUTPUT
+       /sbin/iptables -t nat -N IPSECNAT
+       /sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
+
+       # Outgoing Firewall
+       /sbin/iptables -A FORWARD -j OUTGOINGFWMAC
+       /sbin/iptables -A FORWARD -j OUTGOINGFW
 
        # localhost and ethernet.
        /sbin/iptables -A INPUT   -i lo          -m state --state NEW -j ACCEPT
@@ -167,7 +193,7 @@ case "$1" in
        /sbin/iptables -A FORWARD -i lo          -m state --state NEW -j ACCEPT
        /sbin/iptables -A FORWARD -s 127.0.0.0/8 -m state --state NEW -j DROP
        /sbin/iptables -A FORWARD -d 127.0.0.0/8 -m state --state NEW -j DROP
-       /sbin/iptables -A INPUT   -i $GREEN_DEV  -m state --state NEW -j ACCEPT -p ! icmp
+       /sbin/iptables -A INPUT   -i $GREEN_DEV  -m state --state NEW -j ACCEPT ! -p icmp
        /sbin/iptables -A FORWARD -i $GREEN_DEV  -m state --state NEW -j ACCEPT
 
        # If a host on orange tries to initiate a connection to IPFire's red IP and
@@ -179,10 +205,6 @@ case "$1" in
        /sbin/iptables -N DHCPBLUEINPUT 
        /sbin/iptables -A INPUT -j DHCPBLUEINPUT
 
-       # IPSec
-       /sbin/iptables -N IPSECPHYSICAL
-       /sbin/iptables -A INPUT -j IPSECPHYSICAL
-
        # OPenSSL
        /sbin/iptables -N OPENSSLPHYSICAL
        /sbin/iptables -A INPUT -j OPENSSLPHYSICAL
@@ -243,17 +265,25 @@ case "$1" in
                /sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
        fi
 
-       # run openvpn
-       /usr/local/bin/openvpnctrl --create-chains-and-rules
-
        # run local firewall configuration, if present
        if [ -x /etc/sysconfig/firewall.local ]; then
                /etc/sysconfig/firewall.local start
        fi
        
        # last rule in input and forward chain is for logging.
-       /sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "INPUT "
-       /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "OUTPUT "
+
+       if [ "$DROPINPUT" == "on" ]; then
+               /sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
+       fi
+       /sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
+       if [ "$DROPOUTPUT" == "on" ]; then
+               /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
+       fi
+       /sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
+        ;;
+  startovpn)  
+       # run openvpn
+       /usr/local/bin/openvpnctrl --create-chains-and-rules
         ;;
   stop)
        iptables_init
@@ -273,16 +303,23 @@ case "$1" in
                /sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
        fi
 
-       # stop openvpn
-       /usr/local/bin/openvpnctrl --delete-chains-and-rules
-
        # run local firewall configuration, if present
        if [ -x /etc/sysconfig/firewall.local ]; then
                /etc/sysconfig/firewall.local stop
        fi
 
-       /sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "INPUT "
-       /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "OUTPUT "
+       if [ "$DROPINPUT" == "on" ]; then
+               /sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
+       fi
+       /sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
+       if [ "$DROPOUTPUT" == "on" ]; then
+               /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
+       fi
+       /sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
+        ;;
+  stopovpn)
+       # stop openvpn
+       /usr/local/bin/openvpnctrl --delete-chains-and-rules
         ;;
   reload)
        iptables_red