netfilter/iptables project homepage - The netfilter.org
How to Install and Configure Iptables Firewall on CentOS 6.3 This post covers the steps to install and configure iptables on linux CentOS 6.3 server. Iptables is a packet filtering firewall package in linux. It used to set up, maintain, and inspect the tables of IP packet filter rules in the Linux kernel. Iptables interfaces to the Linux netfilter module to perform filtering of network packets. 1. IPTables rule generator - Perturb.org IPTables rule generator. A quick tool to generate iptables rules, because I can never remember the syntax. All of this (and more) is in the man page. services - Reloading iptables - Ask Ubuntu
18.4. Saving iptables Rules Red Hat Enterprise Linux 4
How to Install Iptables on CentOS 7 | Linuxize Feb 15, 2019 How to start / stop / restart / reload iptables on CentOS Jul 26, 2014
Basic IPTables File Configuration One of the primary benefits of manually configuring the iptables file is comments. While you can utilize comments via the match module (‘-m comment –comment’), you can make more extensive use of comments in the iptables file itself using the ‘ # ‘ …
IPTables rule generator - Perturb.org IPTables rule generator. A quick tool to generate iptables rules, because I can never remember the syntax. All of this (and more) is in the man page. services - Reloading iptables - Ask Ubuntu Normally your firewall rules are in the config file /etc/iptables.firewall.rules. To activate the rules defined in your file you must send them to iptables-restore (you can use another file if you want): sudo iptables-restore < /etc/iptables.firewall.rules And you can check that they are activated with: sudo iptables -L