Linux防火墙iptables简明教程

复制代码

代码如下:

#!/bin/sh 
# Filename: block_ip.sh 
# Purpose: blocks all IP address/network found in a text file 
# The text file must have one IP address or network per line 
################################################################# 
# Change the following path/filename to match yours 
IP_LIST_FILE=/path/to/ip.txt 
################################################################# 
# Don't change anything below unless you are a smarty pant! 
################################################################# 
IPTABLES_BIN=/sbin/iptables 
# Get the IP address/network from the file and ignore any line starting with # (comments) 
BAD_IP_ADDR_LIST=$(grep -Ev "^#" $IP_LIST_FILE) 
# Now loop through the IP address/network list and ban them using iptabels 
for i in $BAD_IP_ADDR_LIST 
do 
echo -n "Blocking $i ..."; 
$IPTABLES_BIN -A INPUT -s $i -j DROP 
$IPTABLES_BIN -A OUTPUT -d $i -j DROP 
echo "DONE."; 
done 
################################################################## 
# END OF SCRIPT - NOTHING TO SEE HERE - THAT'S ALL FOLKS! 
################################################################## 

c).运行脚本 

sh /path/to/block_ip.sh 

d).查看iptables规则是否生效/正确，这一步的命令，之前有提到哦，开动脑筋，实在忘了，点击此处~