Why can the server's connection to the wireguard server be disconnected?

Question

VPN

Hello.
There is a WG server to which my phone connects. This server is connected to the Internet.

There is also a second server which is a Wireguard client. When I set up a connection, access to the server at the static address disappears, and only the local vpn address remains. Everything is fine, as it should be.

But the problem is that after a couple of hours, access to the server disappears under vpn and does not open at a static address. What could be the reason? Tried with different VPS providers, everyone has the same problem.

Any ideas where to dig?

Answer 1

Figured it out on my own. If someone encounters such a problem, then you need to set the PersistentKeepalive = 25 parameter for peer in the vpn server settings. This will allow the connection to remain active.