Forward Firewall: cleanup of initscript. Fixes double log entries when INPUT is set...

[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 410ff8737115425eca5b5dc36ac10398bbad82c1..7e3248147dc7e5bbcda0ba68a4af0e21cf2881c4 100644 (file)
--- a/src/initscripts/init.d/firewall
+++ b/src/initscripts/init.d/firewall
@@ -53,6 +53,9 @@ iptables_init() {
        # Chain to contain all the rules relating to bad TCP flags
        /sbin/iptables -N BADTCP
 
+       #Don't check loopback
+       /sbin/iptables -A BADTCP -i lo -j RETURN
+
        # Disallow packets frequently used by port-scanners
        # nmap xmas
        /sbin/iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH  -j PSCAN
@@ -101,8 +104,7 @@ 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
 
@@ -117,7 +119,8 @@ 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
@@ -132,7 +135,7 @@ 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
@@ -140,9 +143,13 @@ 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 GUARDIAN
+       /sbin/iptables -A INPUT -j GUARDIAN
+       /sbin/iptables -A FORWARD -j GUARDIAN
        /sbin/iptables -N CUSTOMFORWARD
        /sbin/iptables -A FORWARD -j CUSTOMFORWARD
        /sbin/iptables -N CUSTOMOUTPUT
+       /sbin/iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
        /sbin/iptables -A OUTPUT -j CUSTOMOUTPUT
        /sbin/iptables -N OUTGOINGFW
        /sbin/iptables -A OUTPUT -j OUTGOINGFW
@@ -166,51 +173,59 @@ case "$1" in
        /sbin/iptables -A INPUT   -m state --state ESTABLISHED,RELATED -j ACCEPT
        /sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
        
+       # Accept everything on lo
+       iptables -A INPUT  -i lo -m state --state NEW -j ACCEPT
+       iptables -A OUTPUT -o lo -m state --state NEW -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 -m comment --comment "IPSECVIRTUAL INPUT"
+       /sbin/iptables -A INPUT -j IPSECINPUT
        /sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
-       /sbin/iptables -A FORWARD -j IPSECVIRTUAL -m comment --comment "IPSECVIRTUAL FORWARD"
+       /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 OVPNNAT
        /sbin/iptables -t nat -N IPSECNAT
+       /sbin/iptables -t nat -A POSTROUTING -j OVPNNAT
        /sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
 
-       # Outgoing Firewall
-       /sbin/iptables -A FORWARD -j OUTGOINGFW
+       # Input Firewall
+       /sbin/iptables -N INPUTFW
+       /sbin/iptables -A INPUT -m state --state NEW -j INPUTFW
 
        # localhost and ethernet.
-       /sbin/iptables -A INPUT   -i lo          -m state --state NEW -j ACCEPT
+       /sbin/iptables -A INPUT   -i lo -m state --state NEW -j ACCEPT
        /sbin/iptables -A INPUT   -s 127.0.0.0/8 -m state --state NEW -j DROP   # Loopback not on lo
        /sbin/iptables -A INPUT   -d 127.0.0.0/8 -m state --state NEW -j DROP
-       /sbin/iptables -A FORWARD -i lo          -m state --state NEW -j ACCEPT
+       /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 FORWARD -i $GREEN_DEV  -m state --state NEW -j ACCEPT
-
-       # If a host on orange tries to initiate a connection to IPFire's red IP and
-       # the connection gets DNATed back through a port forward to a server on orange
-       # we end up with orange -> orange traffic passing through IPFire
-       [ "$ORANGE_DEV" != "" ] && /sbin/iptables -A FORWARD -i $ORANGE_DEV -o $ORANGE_DEV -m state --state NEW -j ACCEPT
-
+       
        # allow DHCP on BLUE to be turned on/off
        /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
-
+       
        # WIRELESS chains
        /sbin/iptables -N WIRELESSINPUT
        /sbin/iptables -A INPUT -m state --state NEW -j WIRELESSINPUT
        /sbin/iptables -N WIRELESSFORWARD
        /sbin/iptables -A FORWARD -m state --state NEW -j WIRELESSFORWARD
+       
+       # Forward Firewall
+       /sbin/iptables -N FORWARDFW
+       /sbin/iptables -A FORWARD -j FORWARDFW
+               
+       # PORTFWACCESS chain, used for portforwarding
+       /sbin/iptables -N PORTFWACCESS
+       /sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
+       
+       # OPenSSL
+       /sbin/iptables -N OPENSSLPHYSICAL
+       /sbin/iptables -A INPUT -j OPENSSLPHYSICAL
 
        # RED chain, used for the red interface
        /sbin/iptables -N REDINPUT
@@ -221,36 +236,21 @@ case "$1" in
        /sbin/iptables -t nat -A POSTROUTING -j REDNAT
 
        iptables_red
-
-       # DMZ pinhole chain.  setdmzholes setuid prog adds rules here to allow
-       # ORANGE to talk to GREEN / BLUE.
-       /sbin/iptables -N DMZHOLES
-       if [ "$ORANGE_DEV" != "" ]; then
-               /sbin/iptables -A FORWARD -i $ORANGE_DEV -m state --state NEW -j DMZHOLES
-       fi
-
-       # XTACCESS chain, used for external access
-       /sbin/iptables -N XTACCESS
-       /sbin/iptables -A INPUT -m state --state NEW -j XTACCESS
-
-       # PORTFWACCESS chain, used for portforwarding
-       /sbin/iptables -N PORTFWACCESS
-       /sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
-
+               
        # Custom prerouting chains (for transparent proxy and port forwarding)
        /sbin/iptables -t nat -N SQUID
        /sbin/iptables -t nat -A PREROUTING -j SQUID
-       /sbin/iptables -t nat -N PORTFW
-       /sbin/iptables -t nat -A PREROUTING -j PORTFW
-
+       /sbin/iptables -t nat -N NAT_DESTINATION
+       /sbin/iptables -t nat -N NAT_SOURCE
+       /sbin/iptables -t nat -A PREROUTING -j NAT_DESTINATION
+       /sbin/iptables -t nat -A POSTROUTING -j NAT_SOURCE
+       
+       
        # upnp chain for our upnp daemon
        /sbin/iptables -t nat -N UPNPFW
        /sbin/iptables -t nat -A PREROUTING -j UPNPFW
-
-
-       # Custom mangle chain (for port fowarding)
-       /sbin/iptables -t mangle -N PORTFWMANGLE
-       /sbin/iptables -t mangle -A PREROUTING -j PORTFWMANGLE
+       /sbin/iptables -N UPNPFW
+       /sbin/iptables -A FORWARD -m state --state NEW -j UPNPFW
 
        # Postrouting rules (for port forwarding)
        /sbin/iptables -t nat -A POSTROUTING -m mark --mark 1 -j SNAT \
@@ -267,17 +267,17 @@ case "$1" in
                /etc/sysconfig/firewall.local start
        fi
        
-       # last rule in input and forward chain is for logging.
-
-       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"
-        ;;
+       #POLICY CHAIN
+       /sbin/iptables -N POLICYIN
+       /sbin/iptables -A INPUT -j POLICYIN
+       /sbin/iptables -N POLICYFWD
+       /sbin/iptables -A FORWARD -j POLICYFWD
+       /sbin/iptables -N POLICYOUT
+       /sbin/iptables -A OUTPUT -j POLICYOUT
+
+       /usr/sbin/firewall-policy
+       
+       ;;
   startovpn)  
        # run openvpn
        /usr/local/bin/openvpnctrl --create-chains-and-rules
@@ -309,11 +309,11 @@ case "$1" in
                /sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
        fi
        /sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
-       if [ "$DROPOUTPUT" == "on" ]; then
-               /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
+       if [ "$DROPFORWARD" == "on" ]; then
+               /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD "
        fi
-       /sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
-        ;;
+       /sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_FORWARD"
+       ;;
   stopovpn)
        # stop openvpn
        /usr/local/bin/openvpnctrl --delete-chains-and-rules
@@ -329,6 +329,9 @@ case "$1" in
   restart)
        $0 stop
        $0 start
+       /usr/local/bin/forwardfwctrl
+       /usr/local/bin/openvpnctrl -s > /dev/null 2>&1
+       /usr/local/bin/openvpnctrl -sn2n > /dev/null 2>&1
        ;;
   *)
         echo "Usage: $0 {start|stop|reload|restart}"