firewall: Allow blocking access to GREEN from GREEN.

[people/teissler/ipfire-2.x.git] / config / firewall / firewall-policy

diff --git a/config/firewall/firewall-policy b/config/firewall/firewall-policy
index 6d26d5b2cf156d0e43f2251ba124a1e31b599e22..4ba1ace8cec12cee5aab07082e1c8d0cc107a053 100755 (executable)
--- a/config/firewall/firewall-policy
+++ b/config/firewall/firewall-policy
@@ -23,6 +23,10 @@ eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
 eval $(/usr/local/bin/readhash /var/ipfire/firewall/settings)
 eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
 
+function iptables() {
+       /sbin/iptables --wait "$@"
+}
+
 iptables -F POLICYFWD
 iptables -F POLICYOUT
 iptables -F POLICYIN
@@ -37,10 +41,10 @@ HAVE_ORANGE="false"
 
 case "${CONFIG_TYPE}" in
        2)
-               HAVE_BLUE="true"
+               HAVE_ORANGE="true"
                ;;
        3)
-               HAVE_ORANGE="true"
+               HAVE_BLUE="true"
                ;;
        4)
                HAVE_BLUE="true"
@@ -48,19 +52,44 @@ case "${CONFIG_TYPE}" in
                ;;
 esac
 
+HAVE_IPSEC="true"
+HAVE_OPENVPN="true"
+
 # INPUT
+
+# Allow access from GREEN
+iptables -A POLICYIN -i "${GREEN_DEV}" -j ACCEPT
+
+# IPsec INPUT
+case "${HAVE_IPSEC},${POLICY}" in
+       true,MODE1) ;;
+       true,*)
+               iptables -A POLICYIN -m policy --pol ipsec --dir in -j ACCEPT
+               ;;
+esac
+
+# OpenVPN INPUT
+# Allow direct access to the internal IP addresses of the firewall
+# from remote subnets if forward policy is allowed.
+case "${HAVE_OPENVPN},${POLICY}" in
+       true,MODE1) ;;
+       true,*)
+               iptables -A POLICYIN -i tun+ -j ACCEPT
+               ;;
+esac
+
 case "${FWPOLICY2}" in
        REJECT)
                if [ "${DROPINPUT}" = "on" ]; then
-                       /sbin/iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "REJECT_INPUT"
+                       iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "REJECT_INPUT "
                fi
-               /sbin/iptables -A POLICYIN -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_INPUT"
+               iptables -A POLICYIN -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_INPUT"
                ;;
        *) # DROP
                if [ "${DROPINPUT}" = "on" ]; then
-                       /sbin/iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
+                       iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
                fi
-               /sbin/iptables -A POLICYIN -j DROP -m comment --comment "DROP_INPUT"
+               iptables -A POLICYIN -j DROP -m comment --comment "DROP_INPUT"
                ;;
 esac
 
@@ -70,30 +99,49 @@ case "${POLICY}" in
                case "${FWPOLICY}" in
                        REJECT)
                                if [ "${DROPFORWARD}" = "on" ]; then
-                                       /sbin/iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "REJECT_FORWARD"
+                                       iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "REJECT_FORWARD "
                                fi
-                               /sbin/iptables -A POLICYFWD -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_FORWARD"
+                               iptables -A POLICYFWD -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_FORWARD"
                                ;;
                        *) # DROP
                                if [ "${DROPFORWARD}" = "on" ]; then
-                                       /sbin/iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD"
+                                       iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD "
                                fi
-                               /sbin/iptables -A POLICYFWD -j DROP -m comment --comment "DROP_FORWARD"
+                               iptables -A POLICYFWD -j DROP -m comment --comment "DROP_FORWARD"
                                ;;
                esac
                ;;
 
        *)
+               # Access from GREEN is granted to everywhere
+               if [ "${IFACE}" = "${GREEN_DEV}" ]; then
+                       # internet via green
+                       # don't check source IP/NET if IFACE is GREEN
+                       iptables -A POLICYFWD -i "${GREEN_DEV}" -j ACCEPT
+               else
+                       iptables -A POLICYFWD -i "${GREEN_DEV}" -s "${GREEN_NETADDRESS}/${GREEN_NETMASK}" -j ACCEPT
+               fi
+
+               # Grant access for IPsec VPN connections
+               iptables -A POLICYFWD -m policy --pol ipsec --dir in -j ACCEPT
+
+               # Grant access for OpenVPN connections
+               iptables -A POLICYFWD -i tun+ -j ACCEPT
+
                if [ -n "${IFACE}" ]; then
                        if [ "${HAVE_BLUE}" = "true" ] && [ -n "${BLUE_DEV}" ]; then
-                               /sbin/iptables -A POLICYFWD -i "${BLUE_DEV}" ! -o "${IFACE}" -j DROP
+                               iptables -A POLICYFWD -i "${BLUE_DEV}" -s "${BLUE_NETADDRESS}/${BLUE_NETMASK}" -o "${IFACE}" -j ACCEPT
                        fi
+
                        if [ "${HAVE_ORANGE}" = "true" ] && [ -n "${ORANGE_DEV}" ]; then
-                               /sbin/iptables -A POLICYFWD -i "${ORANGE_DEV}" ! -o "${IFACE}" -j DROP
+                               iptables -A POLICYFWD -i "${ORANGE_DEV}" -s "${ORANGE_NETADDRESS}/${ORANGE_NETMASK}" -o "${IFACE}" -j ACCEPT
                        fi
                fi
-               /sbin/iptables -A POLICYFWD -j ACCEPT
-               /sbin/iptables -A POLICYFWD -m comment --comment "DROP_FORWARD" -j DROP
+
+               if [ "${DROPFORWARD}" = "on" ]; then
+                       iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD "
+               fi
+               iptables -A POLICYFWD -m comment --comment "DROP_FORWARD" -j DROP
                ;;
 esac
 
@@ -103,21 +151,21 @@ case "${POLICY1}" in
                case "${FWPOLICY1}" in
                        REJECT)
                                if [ "${DROPOUTGOING}" = "on" ]; then
-                                       /sbin/iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "REJECT_OUTPUT"
+                                       iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "REJECT_OUTPUT "
                                fi
-                               /sbin/iptables -A POLICYOUT -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_OUTPUT"
+                               iptables -A POLICYOUT -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_OUTPUT"
                                ;;
                        *) # DROP
                                if [ "${DROPOUTGOING}" == "on" ]; then
-                                       /sbin/iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT"
+                                       iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
                                fi
-                               /sbin/iptables -A POLICYOUT -j DROP -m comment --comment "DROP_OUTPUT"
+                               iptables -A POLICYOUT -j DROP -m comment --comment "DROP_OUTPUT"
                                ;;
                esac
                ;;
        *)
-               /sbin/iptables -A POLICYOUT -j ACCEPT
-               /sbin/iptables -A POLICYOUT -m comment --comment "DROP_OUTPUT" -j DROP
+               iptables -A POLICYOUT -j ACCEPT
+               iptables -A POLICYOUT -m comment --comment "DROP_OUTPUT" -j DROP
                ;;
 esac