AsusMerlin-WireGuard-Failover

Script to perform failover for wireguard client VPN. This script is a simple attempt to make sure the wireguard VPN client is always connected to a server by performing frequently monitoring latest handshake time checks.

This script is inspired by https://github.com/MartineauUK/VPN-Failover, which I currently use for OpenVPN clients

Usage:

1. Login to the router admin colsole (WebUI - http://router.asus.com (or) whatever gateway address you have set for you router http://192.168.1.1 or http://10.0.0.1 ....) and make sure the JFFS custom scripts and SSH options are enabled under Administration→System
2. SSH into router and place the shell script wg_vpn_failover.sh under /jffs/scripts/
3. Create a new folder called wg_vpn_config_files under /jffs/configs/ and drop your wireguard client config files that you have downloaded from your VPN provider
4. Under /jffs/scripts/ create a new file called wg_vpn_failover_config and add enter the configurations that you want to failover to in the order you prefer (make sure the the config file name in the second column matches the exact files names under /jffs/configs/wg_vpn_config_files), the third column is the short name for VPN client which will be shown as instance name.

Example:

1       PIA-Orlando.conf     PIA-Orlando
2       Nord-Newyork.conf    Nord-Newyork
3       PIA-Austin.conf PIA-Austin
4       PIA-Denver.conf     PIA-Denver
5       PIA-Boston.conf      PIA-Boston

5. Under /jffs/scripts/ edit the services-start file (if the file is not available create one) and enter the below lines

#!/bin/sh

sh /jffs/scripts/wg_vpn_failover.sh

6. Restart the router