RedHat Iptables 脚本移植给SUSE

很多RedHat用户习惯使用RedHat的iptables启动脚本，此文附SUSE的iptables启动脚本

配置文件与RedHat完全一样 

#!/bin/sh
# Copyright (c) 2007 SuSE Linux AG Nuernberg, Germany.
#
# Author: devil <guxing1841@gmail.com>
#
# /etc/init.d/iptables
#

### BEGIN INIT INFO
# Provides:       iptables
# Required-Start: $local_fs dbus haldaemon
# Required-Stop:
# Default-Start:  3 5
# Default-Stop:
# Description:    start iptables fireware
### END INIT INFO

IPTABLES=iptables
IPTABLES_DATA=/etc/sysconfig/$IPTABLES
IPTABLES_CONFIG=/etc/sysconfig/${IPTABLES}-config
IPV=${IPTABLES%tables} # ip for ipv4 | ip6 for ipv6
PROC_IPTABLES_NAMES=/proc/net/${IPV}_tables_names
VAR_SUBSYS_IPTABLES=/var/lock/subsys/$IPTABLES

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     ditto but be verbose in local rc status
#      rc_status -v -r  ditto and clear the local rc status
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num><num>
#      rc_reset         clear local rc status (overall remains)
#      rc_exit          exit appropriate to overall rc status
. /etc/rc.status

# First reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0 - success
# 1 - generic or unspecified error
# 2 - invalid or excess argument(s)
# 3 - unimplemented feature (e.g. "reload")
# 4 - insufficient privilege
# 5 - program is not installed
# 6 - program is not configured
# 7 - program is not running
#
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signalling is not supported) are
# considered a success.

if [ ! -x /usr/sbin/$IPTABLES ]; then
    echo -n $"/sbin/$IPTABLES does not exist.";
    rc_failed; rc_status -v;
    rc_exit;
fi

if lsmod 2>/dev/null | grep -q ipchains ; then
    echo -n $"ipchains and $IPTABLES can not be used together.";
    rc_failed; rc_status -v;
    rc_exit;
fi

# Old or new modutils
/sbin/modprobe --version 2>&1 | grep -q module-init-tools \
    && NEW_MODUTILS=1 \
    || NEW_MODUTILS=0

# Default firewall configuration:
IPTABLES_MODULES=""
IPTABLES_MODULES_UNLOAD="yes"
IPTABLES_SAVE_ON_STOP="no"
IPTABLES_SAVE_ON_RESTART="no"
IPTABLES_SAVE_COUNTER="no"
IPTABLES_STATUS_NUMERIC="yes"

# Load firewall configuration.
[ -f "$IPTABLES_CONFIG" ] && . "$IPTABLES_CONFIG"

rmmod_r() {
    # Unload module with all referring modules.
    # At first all referring modules will be unloaded, then the module itself.
    local mod=$1
    local ret=0
    local ref=

# Get referring modules.
    # New modutils have another output format.
    [ $NEW_MODUTILS = 1 ] \
    && ref=`lsmod | awk "/^${mod}/ { print \\\$4; }" | tr ',' ' '` \
    || ref=`lsmod | grep ^${mod} | cut -d "[" -s -f 2 | cut -d "]" -s -f 1`

# recursive call for all referring modules
    for i in $ref; do
    rmmod_r $i
    let ret+=$?;
    done

# Unload module.
    # The extra test is for 2.6: The module might have autocleaned,
    # after all referring modules are unloaded.
    if grep -q "^${mod}" /proc/modules ; then
    modprobe -r $mod > /dev/null 2>&1
    let ret+=$?;
    fi

return $ret
}

flush_n_delete() {
    # Flush firewall rules and delete chains.
    [ -e "$PROC_IPTABLES_NAMES" ] || return 1

# Check if firewall is configured (has tables)
    tables=`cat $PROC_IPTABLES_NAMES 2>/dev/null`
    if [ -z "$tables" ]; then
        return 1;
    fi