Unable to access PVE guest VMs over VPN

[Henry]

I have a remote LAN that I can access via VPN.

The LAN has a series of web servers and a PVE installation with 2 guest VMs, pfSense & Nagios.

Over the VPN I can ping every server, PVE and the guest VMs.
Over the VPN I am able to access every web server however I am unable to access the web interfaces of Nagios & Proxmox.

From the remote LAN I am able to access the web interfaces of Nagios & Proxmox.

Contrary to the post title I am unable to access the PVE guests using any protocol other than ping.
HTTP on 80, 443, 8443
SSH doesn't work either

I can only ping the guests over the VPN.

 

[Richard]

I have a remote LAN that I can access via VPN.

The LAN has a series of web servers and a PVE installation with 2 guest VMs, pfSense & Nagios.

Over the VPN I can ping every server, PVE and the guest VMs.
Over the VPN I am able to access every web server however I am unable to access the web interfaces of Nagios & Proxmox.

From the remote LAN I am able to access the web interfaces of Nagios & Proxmox.

Contrary to the post title I am unable to access the PVE guests using any protocol other than ping.
HTTP on 80, 443, 8443
SSH doesn't work either

I can only ping the guests over the VPN.

Depends on your VPN, firewall and routing settings. Verify these settings, if you are sure that everything is correct and it still does not work follow the IP packets via tcpdump and check where they get lost.

 

[Henry]

Thanks Richard but the problem cannot be the VPN as all other hosts on the same LAN can be accessed over the VPN. Only the Proxmox guest VMs are inaccessible.