Hi everyone,

I'm trying to set up a WireGuard server-to-server VPN connection between two Unraid servers so that they can access each other and transfer data (SMB, NFS, rsync, etc.).

My setup is:

• Server A

  • Has a Dynamic DNS hostname

  • UDP port 51820 is forwarded to the Unraid server

  • Acts as the main server

• Server B

  • No Dynamic DNS hostname

  • No public static IP

  • Located at a different site

I'm using Unraid's built-in WireGuard VPN Manager and selecting "Server to Server Access" when creating the peer.

My confusion is that Unraid requires an Endpoint field when creating the peer on Server A. Since Server B does not have a public hostname or static IP, I'm not sure what should be entered there.

Questions:

1. What is the recommended way to configure a site-to-site WireGuard tunnel when only one server has a Dynamic DNS hostname?

2. Does Server A actually need an endpoint configured for Server B?

3. Should Server B be configured as the only side that initiates the connection?

4. Are there any example configurations for this scenario using Unraid's built-in WireGuard manager?

Any guidance or screenshots of a working configuration would be greatly appreciated.

Here are my current Configs:

• Server A

Interface Name: PeerToPeer
PrivateKey: [InterfaceAPrivate]
PublicKey: [InterfaceAPublic]
Network: 10.100.100.0/24
Local tunnel address: 10.100.100.1
Local endpoint: [myEndpoint]:51282
Peer name: Server B
Peer type of access: Server to server access
Peer private key: [InterfaceBPrivate]
Peer public key: [InterfaceBPublic]
Peer tunnel address: 10.100.100.2
Peer endpoint: [Thats the Question]

• Server B

  Interface Name: PeerToPeer
  PrivateKey: [InterfaceBPrivate]
  PublicKey: [InterfaceBPublic]
  Network: 10.100.100.0/24
  Local tunnel address: 10.100.100.2
  Local endpoint: [Thats the Question]
  Peer name: Server A
  Peer type of access: Server to server access
  Peer private key: [InterfaceAPrivate]
  Peer public key: [InterfaceAPublic]
  Peer tunnel address: 10.100.100.1
  Peer endpoint: [myEndpoint]:51282
  

Thanks!

Edited June 11Jun 11 by sphairon

I found the Issue in my port forwarding.

Peer endpoint for Server A is just localhost (127.0.0.1).

Local Endpoint for Server B is empty