iptables

Program that allows configuration of tables, chains and rules provided by the Linux kernel firewall. More information: <https://www.netfilter.org/projects/iptables/>.

Install

All systems
curl cmd.cat/iptables.sh
Debian Debian
apt-get install iptables
Ubuntu
apt-get install iptables
Alpine
apk add iptables
Arch Arch Linux
pacman -S iptables
image/svg+xml Kali Linux
apt-get install iptables
CentOS
yum install iptables
Fedora
dnf install iptables
Windows (WSL2)
sudo apt-get update sudo apt-get install iptables
Raspbian
apt-get install iptables
Dockerfile
dockerfile.run/iptables
Docker
docker run cmd.cat/iptables iptables powered by Commando

Program that allows configuration of tables, chains and rules provided by the Linux kernel firewall. More information: <https://www.netfilter.org/projects/iptables/>.

  • View chains, rules, and packet/byte counters for the filter table:
    sudo iptables -vnL
  • Set chain policy rule:
    sudo iptables -P chain rule
  • Append rule to chain policy for IP:
    sudo iptables -A chain -s ip -j rule
  • Append rule to chain policy for IP considering protocol and port:
    sudo iptables -A chain -s ip -p protocol --dport port -j rule
  • Add a NAT rule to translate all traffic from the `192.168.0.0/24` subnet to the host's public IP:
    sudo iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -j MASQUERADE
  • Delete chain rule:
    sudo iptables -D chain rule_line_number
  • Save iptables configuration of a given table to a file:
    sudo iptables-save -t tablename > path/to/iptables_file
  • Restore iptables configuration from a file:
    sudo iptables-restore < path/to/iptables_file

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