iptables deny port

1 iptables good script (reference) Quote: [Root @ server ~] # Cat/opt/iptables. Rule #! /Bin/bash # # The interface that connect Internet Extif = "ppp0" # The inside interface. If you don't have this one # And you must let this be black ex> inif = ""

Install iptables Firewall If you do not install iptables you need to install first, CentOS execution: Yum Install Iptables Debian/ubuntu Execution: Apt-get Install Iptables On the VPS on the week nine Iptables set to: *nat:P rerouting ACCEPT [7

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

Iptables (firewall) and netfilter================================================= recommended blog: http://www.360doc.com/ content/11/0506/09/706976_114731108.shtml# http://drops.wooyun.org/tips/1424netfilter/iptables Introduction: (1) IP

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

System Environment: RedHat7.2squid (squid-cache.org) 1. system settings: Run: setup Select server by default iptables and ipchains have been selected. Remove ipchains and only run iptables. 2. Install squid. We recommend that you install

Transparent firewall (bridge + iptables + squid)-Linux Enterprise Application-Linux server application information. For more information, see the following. Setting up transparent proxy and firewall is a hot topic on the linux platform. There are

Three tables are created: natmangle and filterfilter preset rule tables, there are three rule chains: INPUT, FORWARD, and OUTPUT. INPUT enters the FORWARD forwarding OUTPUT and goes out. ACCEPT releases the REJECT to block the packet. DROP the

From: http://blog.csdn.net/jixiuffff/article/details/5879547 [C-sharp] View plaincopy # Five checkpoints prerouting, forward postrouting Input Output # A data packet enters my machine from prerouting. It has two destinations. One is to

　　Basic syntax format for iptablesiptables [-t table name] command options [link name] [conditional match] [-j target action or jump]Description: The table name, the chain name is used to specify the tables and chains that the Iptables command