Asus Router SSL Updater

This repository contains a Bash script for automatically updating wildcard SSL certificates on Asus routers. The script uses the acme.sh script and works with the NGINX service. This approach is particularly useful if you're using your Asus router for domain forwarding.

The script is designed to work with the Advanced DNS service from Namecheap.com.

Prerequisites

Entware

To start, you need to implement Optware on your Asus router. Entware is a software repository that offers various software programs that can be installed on your router.

Please refer to the following guide for implementing Entware: [https://github.com/RMerl/asuswrt-merlin.ng/wiki/Entware]

acme.sh

After implementing Optware, you need to install the acme.sh script. acme.sh is a simple, powerful, and user-friendly shell script for generating and managing certificates from Let's Encrypt.

Please refer to the following guide for installing acme.sh: [https://github.com/acmesh-official/acme.sh]

Namecheap Account Configuration

The script requires that you set up an account.conf file which will be stored in /tmp/home/root/.acme.sh/ directory on your router. This file should contain your Namecheap API key, username, and source IP address, as well as the user path for the router. An example account.conf file is provided in this repository. Replace the placeholders with your actual details:

NAMECHEAP_API_KEY='<your-namecheap-api-key>'
NAMECHEAP_USERNAME='<your-namecheap-username>'
NAMECHEAP_SOURCEIP='<your-source-ip>'
USER_PATH='/opt/bin:/opt/sbin:/bin:/usr/bin:/sbin:/usr/sbin:/mmc/sbin:/mmc/bin:/mmc/usr/sbin:/mmc/usr/bin:/opt/sbin:/opt/bin:/opt/usr/sbin:/opt/usr/bin'