initial iptables revision

1 files changed, 63 insertions, 372 deletions

diff --git a/core/scripts/iptables.sh b/core/scripts/iptables.sh
index b887204..9c6cb87 100644
--- a/core/scripts/iptables.sh
+++ b/core/scripts/iptables.sh
@@ -1,408 +1,99 @@
-#!/bin/sh
+#!/bin/bash
 
-#
-#                                XXXXXXXXXXXXXXXXX
-#                                XXXX Network XXXX
-#                                XXXXXXXXXXXXXXXXX
-#                                        +
-#                                        |
-#                                        v
-#  +-------------+              +------------------+
-#  |table: filter| <---+        | table: nat       |
-#  |chain: INPUT |     |        | chain: PREROUTING|
-#  +-----+-------+     |        +--------+---------+
-#        |             |                 |
-#        v             |                 v
-#  [local process]     |           ****************          +--------------+
-#        |             +---------+ Routing decision +------> |table: filter |
-#        v                         ****************          |chain: FORWARD|
-# ****************                                           +------+-------+
-# Routing decision                                                  |
-# ****************                                                  |
-#        |                                                          |
-#        v                        ****************                  |
-# +-------------+       +------>  Routing decision  <---------------+
-# |table: nat   |       |         ****************
-# |chain: OUTPUT|       |               +
-# +-----+-------+       |               |
-#       |               |               v
-#       v               |      +-------------------+
-# +--------------+      |      | table: nat        |
-# |table: filter | +----+      | chain: POSTROUTING|
-# |chain: OUTPUT |             +--------+----------+
-# +--------------+                      |
-#                                       v
-#                               XXXXXXXXXXXXXXXXX
-#                               XXXX Network XXXX
-#                               XXXXXXXXXXXXXXXXX
-#
-# iptables [-t table] {-A|-C|-D} chain rule-specification
-#
-# iptables [-t table] {-A|-C|-D} chain  rule-specification
-#
-# iptables  [-t table] -I chain [rulenum] rule-specification
-#
-# iptables [-t table] -R chain rulenum  rule-specification
-#
-# iptables [-t table] -D chain rulenum
-#
-# iptables [-t table] -S [chain [rulenum]]
-#
-# iptables  [-t  table]  {-F|-L|-Z} [chain [rulenum]] [options...]
-#
-# iptables [-t table] -N chain
-#
-# iptables [-t table] -X [chain]
-#
-# iptables [-t table] -P chain target
-#
-# iptables [-t table]  -E  old-chain-name  new-chain-name
-#
-# rule-specification = [matches...] [target]
-#
-# match = -m matchname [per-match-options]
-#
-#
-# Targets
-#
-# can be a user defined chain
-#
-# ACCEPT - accepts the packet
-# DROP   - drop the packet on the floor
-# QUEUE  - packet will be stent to queue
-# RETURN - stop traversing this chain and
-#          resume ate the next rule in the
-#          previeus (calling) chain.
-#
-# if packet reach the end of the chain or
-# a target RETURN, default policy for that
-# chain is applayed.
-#
-# Target Extensions
-#
-# AUDIT
-# CHECKSUM
-# CLASSIFY
-# DNAT
-# DSCP
-# LOG
-#     Torn on kernel logging, will print some
-#     some information on all matching packets.
-#     Log data can be read with dmesg or syslogd.
-#     This is a non-terminating target and a rule
-#     should be created with matching criteria.
-#
-#     --log-level level
-#           Level of logging (numeric or see sys-
-#           log.conf(5)
-#
-#     --log-prefix prefix
-#           Prefix log messages with specified prefix
-#           up to 29 chars log
-#
-#     --log-uid
-#           Log the userid of the process with gener-
-#           ated the packet
-# NFLOG
-#     This target pass the packet to loaded logging
-#     backend to log the packet. One or more userspace
-#     processes may subscribe to the group to receive
-#     the packets.
-#
-# ULOG
-#     This target provides userspace logging of maching
-#     packets. One or more userspace processes may then
-#     then subscribe to various multicast groups and
-#     then receive the packets.
-#
-#
-# Commands
-#
-# -A, --append chain rule-specification
-# -C, --check chain rule-specification
-# -D, --delete chain rule-specification
-# -D, --delete chain rulenum
-# -I, --insert chain [rulenum] rule-specification
-# -R, --replace chain rulenum rule-specification
-# -L, --list [chain]
-# -P, --policy chain target
-#
-# Parameters
-#
-# -p, --protocol protocol
-#       tcp, udp, udplite, icmp, esp, ah, sctp, all
-# -s, --source address[/mask][,...]
-# -d, --destination address[/mask][,...]
-# -j, --jump target
-# -g, --goto chain
-# -i, --in-interface name
-# -o, --out-interface name
-# -f, --fragment
-# -m, --match options module-name
-#       iptables can use extended packet matching
-#       modules.
-# -c, --set-counters packets bytes
+TYPE=bridge
 
 IPT="/usr/sbin/iptables"
 SPAMLIST="blockedip"
 SPAMDROPMSG="BLOCKED IP DROP"
+
 # public interface to network/internet
 BR_IF="br0"
-BR_IP="10.0.0.254"
 BR_NET="10.0.0.0/8"
 GW="10.0.0.1"
 
-# private interface for virtual/internal
-WIFI_IF="wlp7s0"
-WIFI_NET="192.168.1.0/24"
-#PRI_IP="192.168.1.33"
-
-echo "Stopping ipv4 firewall and deny everyone..."
-
-iptables -F
-iptables -X
-iptables -t nat -F
-iptables -t nat -X
-iptables -t mangle -F
-iptables -t mangle -X
-iptables -t raw -F
-iptables -t raw -X
-iptables -t security -F
-iptables -t security -X
-iptables -N blocker
-
-iptables -N netconf_in
-iptables -N netconf_out
-iptables -N server_in
-iptables -N server_out
-iptables -N client_in
-iptables -N client_out
+PUB_IP="10.0.0.254"
+PUB_IF="enp8s0"
 
-iptables -N srv_dns_in
-iptables -N srv_dns_out
-iptables -N cli_dns_in
-iptables -N cli_dns_out
-iptables -N cli_http_in
-iptables -N cli_http_out
-
-# Set Default Rules
-iptables -P INPUT DROP
-iptables -P FORWARD DROP
-iptables -P OUTPUT DROP
-
-####### blocker Chain  ######
-## Block google dns
-$IPT -A blocker -s 8.8.0.0/24 -j LOG --log-level 7 --log-prefix "iptables: blocker google: "
-$IPT -A blocker -s 8.8.0.0/24 -j DROP
-## Block sync
-$IPT -A blocker -p tcp ! --syn -m state --state NEW -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 7 --log-prefix "iptables: drop sync: "
-$IPT -A blocker -p tcp ! --syn -m state --state NEW -j DROP
-## Block Fragments
-$IPT -A blocker -f -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop frag: "
-$IPT -A blocker -f -j DROP
-$IPT -A blocker -p tcp --tcp-flags ALL FIN,URG,PSH -j DROP
-$IPT -A blocker -p tcp --tcp-flags ALL ALL -j DROP
-$IPT -A blocker -p tcp --tcp-flags ALL NONE -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop null: "
-$IPT -A blocker -p tcp --tcp-flags ALL NONE -j DROP # NULL packets
-$IPT -A blocker -p tcp --tcp-flags SYN,RST SYN,RST -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop syn rst syn rst: "
-$IPT -A blocker -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
-$IPT -A blocker -p tcp --tcp-flags SYN,FIN SYN,FIN -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop xmas: "
-$IPT -A blocker -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP #XMAS
-$IPT -A blocker -p tcp --tcp-flags FIN,ACK FIN -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop fin scan: "
-$IPT -A blocker -p tcp --tcp-flags FIN,ACK FIN -j DROP # FIN packet scans
-$IPT -A blocker -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP
-## Return to caller
-$IPT -A blocker -j RETURN
-
-######## DNS Server
-#echo "server_in chain: Allow input to DNS Server"
-$IPT -A srv_dns_in -p udp --dport 53 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-$IPT -A srv_dns_in -p tcp --dport 53 --sport 1024:65535  -m state --state NEW,ESTABLISHED -j ACCEPT
-$IPT -A srv_dns_in -j RETURN
-#echo "srv_dns_out chain: Allow output from DNS server"
-$IPT -A srv_dns_out -p udp --sport 53 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
-$IPT -A srv_dns_out -p tcp --sport 53 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
-$IPT -A srv_dns_out -j RETURN
-
-######## DNS Client
-echo "cli_dns_out chain: Allow output to DNS server"
-$IPT -A cli_dns_out -p udp --dport 53 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-$IPT -A cli_dns_out -j RETURN
-echo "cli_dns_in chain: Allow input from DNS Server"
-$IPT -A cli_dns_in -p udp --sport 53 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-$IPT -A cli_dns_in -j RETURN
+# private interface for virtual/internal
+PRIV_IF="wlp7s0"
+PRIV_NET="192.168.1.0/24"
 
-######## HTTP Client
-$IPT -A cli_http_in -p tcp --sport 80 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-$IPT -A cli_http_in -j RETURN
-#echo "Allow to HTTP server"
-$IPT -A cli_http_out -p tcp --dport 80 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-$IPT -A cli_http_out -j RETURN
+#$IPT -A netconf_in -p icmp -s ${BR_NET} -j ACCEPT
 
-####### server input Chain  ######
-#echo "server_in chain: Allow to VNC Server"
-#$IPT -A server_in -p tcp --dport 5900:5910 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "server_in chain: Allow to DataBase Server"
-$IPT -A server_in -p tcp --dport 5432 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "server_in chain: Allow to SSH server"
-$IPT -A server_in -p tcp --dport 2222 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "server_in chain: Allow input to HTTPS Server"
-$IPT -A server_in -p tcp --dport 443 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "server_in chain: Allow input to HTTP Server"
-$IPT -A server_in -p tcp --dport 80 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "server_in chain: Allow output from GIT server"
-$IPT -A server_in -p tcp --dport 9418 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
+#$IPT -A netconf_out -p icmp -d ${BR_NET} -j ACCEPT
 
-## Return to caller
-$IPT -A server_in -j RETURN
+source iptables-conf.sh
 
-####### server output Chain  ######
-echo "server_out chain: Allow output from GIT server"
-$IPT -A server_out -p tcp --sport 9418 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
-echo "server_out chain: Allow output from https server"
-$IPT -A server_out -p tcp --sport 443 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
-echo "server_out chain: Allow output from http server"
-$IPT -A server_out -p tcp --sport 80 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
-echo "server_out chain: Allow output from SSH server"
-$IPT -A server_out -p tcp --sport 2222 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "server_out chain: Allow output from Data Base server"
-$IPT -A server_out -p tcp --sport 5432 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-#echo "server_out chain: Allow output from VNC server"
-#$IPT -A server_out -p tcp --sport 5900:5910 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+iptables_clear
+# Unlimited on loopback
+$IPT -A INPUT -i lo -s 127.0.0.0/8 -d 127.0.0.0/8 -j ACCEPT
+$IPT -A OUTPUT -o lo -s 127.0.0.0/8 -d 127.0.0.0/8 -j ACCEPT
+$IPT -A INPUT -i lo -s ${PUB_IP} -d ${PUB_IP} -j ACCEPT
+$IPT -A OUTPUT -o lo -s ${PUB_IP} -d ${PUB_IP} -j ACCEPT
 
-## Return to caller
-$IPT -A server_out -j RETURN
 
-####### client input Chain  ######
-echo "client_in chain: Allow input from IRC server"
-$IPT -A client_in -p tcp --sport 6667 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "client_in chain: Allow input from FTP server"
-$IPT -A client_in -p tcp --sport 21 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "client_in chain: Allow input from GIT server"
-$IPT -A client_in -p tcp --sport 9418 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "client_in chain: Allow input from POP3S server"
-$IPT -A client_in -p tcp --sport 995 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "client_in chain: Allow input from SMTPS server"
-$IPT -A client_in -p tcp --sport 465 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "client_in chain: Allow input from HTTPS server"
-$IPT -A client_in -p tcp --sport 443 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-$IPT -A client_in -p udp --sport 443 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "client_in chain: Allow input from SSH Server"
-$IPT -A client_in -p tcp --sport 2222 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-$IPT -A client_in -p tcp --sport 22 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-echo "client_in chain: Allow input from GPG key Server"
-$IPT -A client_in -p tcp --sport 11371 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
-$IPT -A client_in -j RETURN
+iptables_tables
 
-####### client output Chain  ######
-echo "client_out chain: Allow output to IRC  server"
-$IPT -A client_out -p tcp --dport 6667 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "client_out chain: Allow output to FTP server"
-$IPT -A client_out -p tcp --dport 21 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "client_out chain: Allow output to GIT server"
-$IPT -A client_out -p tcp --dport 9418 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "client_out chain: Allow output to POP3S server"
-$IPT -A client_out -p tcp --dport 995 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "client_out chain: Allow output to SMTPS server"
-$IPT -A client_out -p tcp --dport 465 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "client_out chain: Allow output to HTTPS server"
-$IPT -A client_out -p tcp --dport 443 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-$IPT -A client_out -p udp --dport 443 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "client_out chain: Allow output to SSH server"
-$IPT -A client_out -p tcp --dport 2222 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-$IPT -A client_out -p tcp --dport 22 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-echo "client_out chain: Allow output to GPG key Server"
-$IPT -A client_out -p tcp --dport 11371 --sport 1024:65535 -m state --state NEW,ESTABLISHED -j ACCEPT
-$IPT -A client_out -j RETURN
+case $TYPE in
+    bridge)
 
-####### netconf input Chain  ######
-echo "netconf_in chain: Allow DHCP protocol"
-$IPT -A netconf_in -p udp --sport 68 --dport 67 -j ACCEPT
-echo "netconf_in chain: Allow RIP protocol for ${BR_NET}"
-$IPT -A netconf_in -p udp --sport 520 --dport 520 -j ACCEPT
-#echo "netconf chain: Allow ICMP from ${BR_NET}"
-#$IPT -A netconf_in -p icmp -s ${BR_NET} -j ACCEPT
-echo "netconf_in chain: Allow ICMP from all"
-$IPT -A netconf_in -p icmp -j ACCEPT
+        echo "Setting bridge network..."
 
-## Return to caller
-$IPT -A netconf_in -j RETURN
+        echo 1 > /proc/sys/net/ipv4/ip_forward
 
+        ####### Forward Chain  ######
+        $IPT -A FORWARD -j blocker
+        #$IPT -A FORWARD -i ${BR_IF} -o ${BR_IF} -d ${NET_ADDR} -m physdev --physdev-in ${PUB_IF} --physdev-out tap2 -j ACCEPT
+        #$IPT -A FORWARD -i ${BR_IF} -o ${BR_IF} -m physdev --physdev-in tap0 --physdev-out ${PUB_IF} -j srv_ssh_out
+        $IPT -A FORWARD -i ${BR_IF} -o ${BR_IF} -s ${PUB_IP} -d ${BR_NET} -j cli_ssh_in
+        $IPT -A FORWARD -o ${BR_IF} -s ${PUB_IP} -d ${BR_NET} -j cli_ssh_out
 
-####### netconf output Chain  ######
-echo "netconf_out chain: Allow output from DHCP server"
-$IPT -A netconf_out -p udp --sport 67 --dport 68 -j ACCEPT
-echo "netconf_out chain: Allow RIP protocol for ${BR_NET}"
-$IPT -A netconf_out -p udp --sport 520 --dport 520 -j ACCEPT
-#echo "netconf chain: Allow ICMP output to ${BR_NET}"
-#$IPT -A netconf_out -p icmp -d ${BR_NET} -j ACCEPT
-echo "netconf chain: Allow ICMP output to all"
-$IPT -A netconf_out -p icmp -j ACCEPT
+        ####### Input Chain ######
+        $IPT -A INPUT -j blocker
+        $IPT -A INPUT -i ${BR_IF} -d ${PUB_IP} -j cli_dns_in
+        $IPT -A INPUT -i ${BR_IF} -d ${PUB_IP} -j cli_https_in
 
-## Return to caller
-$IPT -A netconf_out -j RETURN
+        $IPT -A INPUT -i ${BR_IF} -d ${PUB_IP} -s ${BR_NET} -j cli_ssh_in
 
-############################################################
-#
-# Start adding rules tables
-#
+        $IPT -A INPUT -i ${BR_IF} -d ${PUB_IP} -p tcp  --sport 3030 --dport 1024:65535 -j DROP
 
-echo "Starting ipv4 firewall tables..."
+        ####### Output Chain ######
+        $IPT -A OUTPUT -j blocker
+        $IPT -A OUTPUT -o ${BR_IF} -s ${PUB_IP} -j cli_dns_out
+        $IPT -A OUTPUT -o ${BR_IF} -s ${PUB_IP} -j cli_https_out
+        $IPT -A OUTPUT -o ${BR_IF} -s ${PUB_IP} -d ${BR_NET} -j cli_ssh_out
 
-# Unlimited on loopback
-$IPT -A INPUT -i lo -s 127.0.0.0/8 -d 127.0.0.0/8 -j ACCEPT
-$IPT -A OUTPUT -o lo -s 127.0.0.0/8 -d 127.0.0.0/8 -j ACCEPT
-$IPT -A INPUT -i lo -s ${BR_IP} -d ${BR_IP} -j ACCEPT
-$IPT -A OUTPUT -o lo -s ${BR_IP} -d ${BR_IP} -j ACCEPT
+        #Less noise
+        $IPT -A OUTPUT -o ${BR_IF} -s ${PUB_IP} -p tcp --dport 3030 --sport 1024:65535 -j DROP
 
-#modprobe ip_conntrack
-#modprobe ip_conntrack_ftp
-echo 1 > /proc/sys/net/ipv4/ip_forward
+        ####### PostRouting Chain ######
+        $IPT -t nat -A POSTROUTING -o ${PRIV_IF} -j MASQUERADE
 
-####### Forward Chain  ######
-$IPT -A FORWARD -j blocker
-$IPT -A FORWARD -i ${BR_IF} -o ${BR_IF} -s ${BR_NET} -d ${BR_NET} -j ACCEPT
-$IPT -A FORWARD -o ${BR_IF} -s ${BR_IP} -d ${BR_NET} -j ACCEPT
-#$IPT -A FORWARD -i ${BR_IF} -o ${WIFI_IF} -j ACCEPT
-#$IPT -A FORWARD -i ${WIFI_IF} -o ${BR_IF} -j ACCEPT
+        ## log everything else and drop
+        iptables_log
 
-####### Input Chain ######
-$IPT -A INPUT -j blocker
-$IPT -A INPUT -i ${BR_IF} -j netconf_in
-$IPT -A INPUT -i ${BR_IF} -d ${BR_IP} -j srv_dns_in
-$IPT -A INPUT -i ${BR_IF} -s ${BR_NET} -d ${BR_IP} -j server_in
-#$IPT -A INPUT -i ${WIFI_IF} -d ${WIFI_NET} -j client_in
-#$IPT -A INPUT -i ${WIFI_IF} -d ${WIFI_NET} -j cli_dns_in
-#$IPT -A INPUT -i ${BR_IF} -d ${BR_IP} -j client_in
-#
-##$IPT -A INPUT -i ${WIFI_IF} -j server_in
-#$IPT -A INPUT -i ${WIFI_IF} -j netconf_in
+        iptables-save > /etc/iptables/net.v4
+        exit 0
+        ;;
+    server)
 
-####### Output Chain ######
-$IPT -A OUTPUT -j blocker
-$IPT -A OUTPUT -o ${BR_IF}  -j netconf_out
-$IPT -A OUTPUT -o ${BR_IF} -s ${BR_IP} -d ${BR_NET} -j srv_dns_out
-$IPT -A OUTPUT -o ${BR_IF} -s ${BR_IP} -d ${BR_NET} -j server_out
-$IPT -A OUTPUT -o ${BR_IF} -s ${BR_IP} -d ${BR_NET} -j client_out
-#$IPT -A OUTPUT -o ${WIFI_IF} -s ${WIFI_NET} -j client_out
-#$IPT -A OUTPUT -o ${WIFI_IF} -s ${WIFI_NET} -j cli_dns_out
+        echo "Setting server network..."
+        ####### Input Chain ######
+        $IPT -A INPUT -j blocker
 
-#$IPT -A OUTPUT -o ${BR_IF} -s ${BR_IP} -j client_out
+        ####### Output Chain ######
+        $IPT -A OUTPUT -j blocker
 
-#$IPT -A OUTPUT -o ${WIFI_IF} -j server_out
-#$IPT -A OUTPUT -o ${WIFI_IF} -j netconf_out
+        ## log everything else and drop
+        iptables_log
 
-####### PostRouting Chain ######
-$IPT -t nat -A POSTROUTING -o ${WIFI_IF} -j MASQUERADE
-#$IPT -t nat -A POSTROUTING -o ${BR_IF} -j MASQUERADE
+        iptables-save > /etc/iptables/net.v4
+        exit 0
 
-## log everything else and drop
-$IPT -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: "
-$IPT -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: "
-$IPT -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: "
-$IPT -t nat -A POSTROUTING -j LOG --log-level 7 --log-prefix "iptables: POSTROUTING: "
-$IPT -t nat -A PREROUTING -j LOG --log-level 7 --log-prefix "iptables: PREROUTING: "
+        ;;
+    *)
 
+        echo "usage: $0 [start|stop|restart]"
+        ;;
+esac
 
-iptables-save > /etc/iptables/net.rules
-exit 0