Quick How-To denyallow IP using iptables

Quick How-To deny/allow IP using iptables

How to block an IP using iptables?

iptables -A INPUT -s xx.xx.xx.xx -j DROP

How to block an IP for a specific port:

iptables -A INPUT -p tcp -s xx.xx.xx.xx --dport PORT -j DROP

How to allow access to an IP?

iptables -A INPUT -s xx.xx.xx.xx -j ACCEPT

How to allow access to an IP to a specific port using iptables?

iptables -A INPUT -p tcp -s xx.xx.xx.xx --dport PORT -j ACCEPT

where, xx.xx.xx.xx is the remote IP address and PORT is the port number you wish to allow/deny access to.How to block a scanner on your server for example “w00tw00t.at.ISC.SANS” using iptables?

iptables -I INPUT -p tcp --dport 80 -m string --algo bm --string 'GET /w00tw00t.at.ISC.SANS.' -j DROP posted on 2014-10-29 12:35 北京涛子 阅读( ...) 评论( ...) 编辑 收藏

转载于:https://www.cnblogs.com/liujitao79/p/4059169.html