Shortened network- to net-

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# WireGuard Client behind NAT
## Description
This role adapts iptables rules to enable proper connectivity for a WireGuard client running behind a NAT or firewall. It ensures that traffic is forwarded correctly by applying necessary masquerading rules.
## Overview
Optimized for environments with network address translation (NAT), this role:
- Executes shell commands to modify iptables rules.
- Allows traffic from the WireGuard client interface (e.g. `wg0-client`) and sets up NAT masquerading on the external interface (e.g. `eth0`).
- Works as an extension to the native WireGuard client role.
## Purpose
The primary purpose of this role is to enable proper routing and connectivity for a WireGuard client situated behind a firewall or NAT device. By adapting iptables rules, it ensures that the client can communicate effectively with external networks.
## Features
- **iptables Rule Adaptation:** Modifies iptables to allow forwarding and NAT masquerading for the WireGuard client.
- **NAT Support:** Configures the external interface for proper masquerading.
- **Role Integration:** Depends on the [net-wireguard-plain](../net-wireguard-plain/README.md) role to ensure that WireGuard is properly configured before applying firewall rules.
## Other Resources
- https://gist.github.com/insdavm/b1034635ab23b8839bf957aa406b5e39
- https://wiki.debian.org/iptables

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---
galaxy_info:
author: "Kevin Veen-Birkenbach"
description: "Adapts iptables rules to enable proper connectivity for a WireGuard client running behind a NAT or firewall, ensuring that traffic is correctly forwarded and masqueraded."
license: "CyMaIS NonCommercial License (CNCL)"
license_url: "https://s.veen.world/cncl"
company: |
Kevin Veen-Birkenbach
Consulting & Coaching Solutions
https://www.veen.world
min_ansible_version: "2.9"
platforms:
- name: Linux
versions:
- all
galaxy_tags:
- wireguard
- nat
- firewall
- iptables
- networking
repository: "https://s.veen.world/cymais"
issue_tracker_url: "https://s.veen.world/cymaisissues"
documentation: "https://s.veen.world/cymais"
dependencies:
- net-wireguard-plain

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- name: adapt iptable rules
shell: iptables -A FORWARD -i wg0-client -j ACCEPT && iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE