What is the difference between Mangle Table & NAT Table
The Netfilter Mangle Table | The Netfilter Mangle Table iptables -t mangle -A PREROUTING -p tcp --dport 25 -j TOS --set-tos 0x04 iptables -t mangle -A PREROUTING -p tcp --sport 25 -j TOS --set-tos 0x04. Now, I know you don't want to put in 18 rules when 8 will suffice. So, let's take a look at how multiple ports can be specified in one line. How to list all iptables rules with line numbers on Linux Jul 17, 2018 iptables-cheatsheet · GitHub
Jun 03, 2020
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT do not forget in addition to masquerading to authorize forwarding from your LAN. Say 192.168.0.0/24 is the LAN of your host and 192.168.1.0/24 the LAN you want to connect to the Web, then : iptables -I FORWARD 1 -s 192.168.1.0/24 ! -d 192.168.0.0/24 -j ACCEPT How To Configure iptables Firewall In Linux - LinuxAndUbuntu Dec 07, 2019 networking - iptables does not add/list PREROUTING rules
Man page of iptables-extensions
What is iptables? How to manage iptables? - Interserver Tips Before viewing the commands, we are going to discuss tables and chains associated with iptables. Tables and chains in iptables. Normally, the iptables has four built-in tables. They are listed below. 1) Filter Table. 2) NAT Table. 3) Mangle Table. 4) Raw Table. Let’s see each one in detail. 1) Filter Table. The filter table is the default iptables v1.3.8: can't initialize iptables table `filter'