Iptables official website: Alibaba
Path of the data packet passing through the firewall
Force access to a site
Publish an internal network server
Access through NAT
Http://os.51cto.com/art/201107/273443.htm"51CTO exclusive feature" Linux system administrators have been exposed to netfilter/iptables, this is the Linux system comes with a free firewall, the function is very powerful. In the following
Netfilter/iptables is an IP information packet filtering system integrated with the latest Linux kernel version 2.4.x. If the Linux system is connected to the Internet or LAN, server, or a proxy server connected to the LAN and Internet, the system
For more information about IPTABLES configuration in linux-general Linux technology-Linux technology and application information, see the following. Simple Application of IPTABLES:
Iptables-a input-p tcp-s 10.1.2.187-j ACCEPT
Add 10.1.2.187 to the
The method for starting and stopping iptables depends on the Linux release version in use. you can view the documentation of the Linux version in use. In RedHat, start iptables with: # serviceiptablesstart. generally, iptables is already included in
The instance disabling ssh port only allows remote ssh login on 192.168.62.1, and prohibit ssh # iptables-AINPUT-s192.168.62.1-ptcp from other computers? # Iptables-AINPUT-ptcp? Dport22-jDROP disable proxy port # iptables-AIN
Security Service-iptablesI. Network Security Access ControlWe all know that Linux is generally used as a server and provides some network-based services. Generally, we need to perform some network control on the server,Similar to firewall
Netfilter/iptablesIs an IP information packet filtering system integrated with the latest Linux kernel version 2.4.x. If the Linux system is connected to the Internet or LAN, server, or a proxy server connected to the LAN and Internet, the system
Iptables details, iptables
Netfilter/iptables (iptables for short) is a packet filtering firewall on the Linux platform. Like most Linux software, this packet filtering firewall is free of charge, it can replace expensive
For this article, we will use iptables user space tool Version 1.2.6a and kernel version 2.4.9.
Linux security and Netfilter/iptablesLinux has become very popular in the IT industry because of its robustness, reliability, flexibility, and
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