iptables: Sample Configuration · GitHub
Jul 16, 2013 · The iptables init script on Gentoo is capable of handling many common scenarios. For starters, it allows you to configure iptables to load on startup (usually what you want): rc-update add iptables default. Using the init script, it is possible to load and clear the firewall with an easy-to-remember command: Oct 20, 2011 · Iptables Command: The iptables command can be used in several different ways. List the current rules in use, similar to viewing the /etc/sysconfig/iptables file. #iptables -L . To set a default policy use iptables -P, in the example below we are setting the default INPUT policy to DROP. #iptables -P INPUT DROP iptables -A INPUT -i eth1 -s 10.0.0.138/32 \ -d 10.0.0.0/8 -p tcp \ --sport 1723 -m state \ --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -i eth1 -s 10.0.0.138/32 \ -d 10.0.0.0/8 -p gre -j ACCEPT iptables -A INPUT -i eth1 -j DROP iptables -A OUTPUT -o eth1 -s 10.0.0.0/8 \ -d 10.0.0.138/32 -p tcp --dport 1723 \ -j ACCEPT This is an example IPTABLES firewall config file. ##### ## IPTABLES FIREWALL CONFIGURATION ##### *filter ##ALLOW loopback interface-A INPUT -i lo -j ACCEPT ##ALLOW connections that originate from this server-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
Oct 20, 2011
iptables sample rules script. This is a script that implements an iptables policy example where the outbound traffic is allowed and incoming traffic is denied (excepting SSH and PING). The script uses the log-prefix option to apply the prefixes that clearly identify the types of events that are logged. Jul 16, 2013 · The iptables init script on Gentoo is capable of handling many common scenarios. For starters, it allows you to configure iptables to load on startup (usually what you want): rc-update add iptables default. Using the init script, it is possible to load and clear the firewall with an easy-to-remember command:
Jan 29, 2018 · Introduction. iptables is a powerful tool used to configure the Linux-kernel's integrated firewall. It comes preinstalled on most Ubuntu distributions, however if you are using a customized Ubuntu version or running inside a container you will most likely have to install it manually.
Aug 10, 2012 The Bash Script To Configure The Firewall Using IPTABLES The Bash Script To Configure The Firewall Using IPTABLES About the Script: This script is about to build a firewall in Linux OS by using iptables, the user only needs to follow and answer the simple and easy steps and the script will generate the user specified iptables rule in its original form.. I HAVE TESTED THE SCRIPT ON PCLINUXOS, FEDORA-9, DREAM_LINUX, UBUNTU-8. iptables examples on CentOS. - ITekBlog 1 thought on “ iptables examples on CentOS ” Rodney Wienand January 22, 2014 at 14:21. Thank you Adam for a comprehensive explanation and variety of commands for various functions. I will have a copy of the link to this page saved as I am sure I will have to refer to it again.