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1. Show the status of the firewallRun the following command with root privileges:
# iptables-l-n-v
Parameter description:
-L: Lists the rules.
-V: Displays detailed information. This option displays the interface name,
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
CentOS Study Notes-firewall iptables, centosiptablesLinux Firewall: iptables
Iptables is a packet filtering software, and more than 2.6 of the Linux kernel is this software. This Section selects the Linux private dish of laruence-Chapter 9 server
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
From: http://blog.csdn.net/jixiuffff/article/details/5879547
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# Five checkpoints prerouting, forward postrouting Input Output
# A data packet enters my machine from prerouting. It has two destinations. One is to
Linux opens ports that allow extranet accessLinux opens ports that allow extranet access
Linux uses the following command to open network ports that allow external access:
viewing port conditions
1.netstat-ntpl
2.IPTABLES-F rules for clearing all
Iptables-1.1.9 Guide (Classic) (4)-Linux Enterprise Application-Linux server application information, which is described below. The meaning of [UNREPLIED] is the same as that in the previous section. It indicates that the number is transmitted only
Iptables machine configuration
1) view the current configuration
# Iptables-L
-V: Displays detailed information, including the number of matching packets for each rule and the number of matching bytes. The number of matching packets and flow meter
Linux iptables firewall basic application tutorial, linuxiptables
Iptables is a common firewall software in Linux, the following describes how to install and clear iptables rules. iptables only supports the specified port. iptables shields basic
Http:// OS .51cto.com/art/201108/285352.htm
This document is intended for beginners of iptables. If you have just learned the principles and basic syntax of iptables, but you still do not know how to actually use this tool in the online server
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