iptables阻止从IP地址访问端口8000 [英] iptables block access to port 8000 except from IP address

问题描述

我从没使用过iptables，而且在线文档似乎有点不透明.

I've never used iptables, and the documentation online seems a bit opaque.

除来自特定IP地址的请求外，我想阻止对服务器上端口8000的所有请求.如何使用iptables做到这一点?

I'd like to block all requests to port 8000 on my server except those coming from a specific IP address. How do I do that using iptables?

推荐答案

此问题应该在服务器故障上.不过，假设您正在谈论TCP，而您要允许的IP是1.2.3.4，则以下方法应该可以解决问题:

This question should be on Server Fault. Nevertheless, the following should do the trick, assuming you're talking about TCP and the IP you want to allow is 1.2.3.4:

iptables -A INPUT -p tcp --dport 8000 -s 1.2.3.4 -j ACCEPT
iptables -A INPUT -p tcp --dport 8000 -j DROP

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