WireGuard: Persistent Keepalive Not Working for Split Tunnel with Single Client and Two VPSs

Abstract: This article discusses a common issue with WireGuard's persistent keepalive not working for a single client set up with two VPSs in a split tunnel configuration. The client-side connection stops after hours, and restarting the interface does not resolve the issue. We'll explore potential solutions to this problem.

Created: 2024-02-05 by UserComp.com Editors

WireGuard Persistent Keepalive Not Working: A Guide to Troubleshooting Split Tunnel with a Single Client and Two VPSs

In this article, we will discuss a common issue that arises when setting up WireGuard with a single client and two VPSs in a split tunnel configuration: the persistent keepalive feature is not working as expected, and the client-side connections stop and restart the interface every hour.

Introduction to WireGuard

WireGuard is a modern, secure, and easy-to-use VPN protocol that has gained popularity in recent years due to its simplicity and performance. It is designed to be faster, more secure, and more reliable than traditional VPN protocols such as OpenVPN and IPsec.

Understanding Split Tunnel

A split tunnel is a VPN configuration that allows traffic to be routed through the VPN server for specific destinations, while other traffic is routed through the local internet connection. This is useful for improving performance and reducing the amount of data that needs to be sent through the VPN tunnel.

Setting up WireGuard with a Single Client and Two VPSs

To set up WireGuard with a single client and two VPSs, you will need to perform the following steps:

Generate WireGuard keys for each VPS and the client
Configure the WireGuard interface on each VPS
Configure the WireGuard interface on the client
Configure the routing table on each VPS and the client

Persistent Keepalive Not Working

One common issue that arises when setting up WireGuard in a split tunnel configuration with a single client and two VPSs is that the persistent keepalive feature is not working as expected. The persistent keepalive feature is designed to keep the connection alive by sending periodic keepalive messages. However, in some cases, the client-side connections may stop and restart the interface every hour.

Troubleshooting Persistent Keepalive

To troubleshoot this issue, you can try the following steps:

Check the WireGuard configuration on each VPS and the client to ensure that the persistent keepalive feature is enabled
Check the WireGuard logs on each VPS and the client to see if there are any error messages related to the persistent keepalive feature
Check the network configuration on each VPS and the client to ensure that there are no issues with the routing table or firewall rules
Try using a different WireGuard implementation or version to see if the issue is related to a specific implementation or version

Setting up WireGuard with a single client and two VPSs in a split tunnel configuration can be a powerful way to improve performance and reduce data usage. However, the persistent keepalive feature may not work as expected in some cases. By following the troubleshooting steps outlined in this article, you can identify and resolve the issue to ensure that your WireGuard connections remain stable and reliable.

WireGuard is a modern, secure, and easy-to-use VPN protocol
Split tunnel is a VPN configuration that allows traffic to be routed through the VPN server for specific destinations
Persistent keepalive is a feature that keeps the connection alive by sending periodic keepalive messages
Common issue: client-side connections stop and restart the interface every hour
Troubleshooting steps: check configuration, logs, network configuration, and try different WireGuard implementation or version

References

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