iptables drop ip port

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Use iptables to restrict specified ip addresses to access the specified port and website

1. back up iptables # cp/etc/sysconfig/iptables/var/tmp first. Port 80 must be enabled, and the following three lines of IP address and Lan must be specified: first, disable all port 80 and enable port 80 at the end of the ip segment 192.168.1.0/24.

The Iptables firewall allows only the specified IP connection to specify the port, access the specified Web site

Need to open port 80, specify IP and LAN The following three lines mean: Shut down all 80 ports first. Open 80 ports of IP segment 192.168.1.0/24 end Open IP Segment 211.123.16.123/24 80 port IP Segment # iptables-i input-p TCP--dport 80-j DROP

Iptables firewall automatic setting script

We recommend a good iptables-shell script to free you from the troublesome iptables configuration. I am not sure who the script author is, so I deleted the version declaration. system: centos5.9 script content: viiptables. sh #! /Bin/sh # -----------

Linux firewall iptables Common shell scripts

The code is as follows Copy Code #!/bin/sh#------------------------------------------------------------------------------# for debugging use Iptables-v.Iptables= "/sbin/iptables"Ip6tables= "/sbin/ip6tables"Modprobe=

Common iptables configuration rules

Flood protection: iptables-tnat-FFloodiptables-tnat-IFlood-jDROPiptables-tnat-IFlood-mlimit -- limit3/hour -- limit-burst5-jLOG -- log-prefixFlood-dropped: iptables-tn flood protection: Iptables-T nat-F Flood Iptables-t nat-I Flood-j

Iptables advanced application instance

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 = ""

The iptables firewall only allows an IP address to access a port and a specific website.

1. back up iptables # cp/etc/sysconfig/iptables/var/tmp first. Port 80 must be enabled, and the following three lines of IP address and lan must be specified: first, disable all port 80 and enable port 80 at the end of the ip segment 192.168.1.0/24.

Iptables rule configuration Add, delete, and modify commands

Introduced Iptables is an IP packet filtering system integrated with the latest version 3.5 Linux kernel. If a Linux system is connected to an Internet or LAN, a server, or a proxy server that connects LAN and the Internet, the system facilitates

Iptables firewall rule configuration and port range

If there are many ports and are sorted, use the port range statement. for example, Port 40100: 40109 indicates port 40100 to Port 40109. if you do not know the basic knowledge of IPTABLES, we recommend that you first check it out. configure a filter

Netfilter/iptables Firewall

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

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