remote-migrate to the destination server located behind the NAT


New Member
Aug 21, 2023

I have two Proxmox servers, both with internal IP addresses, and they are behind a NAT for external connections. I want to migrate a VM from the first server to the second server using qm remote-migrate. The first server can be connected to a public IP and a 4-digit port that is mapped to port 22 on the second server. I receive errors during remote migration.

500 Can't connect to x.x.x.x:{Port} (SSL connect attempt failed error:1408F10B:SSL routines:ssl3_get_record:wrong version number)

servers version:

proxmox-ve: 7.4-1 (running kernel: 5.15.111-1-pve)
pve-manager: 7.4-17 (running version: 7.4-17/513c62be)
pve-kernel-5.15: 7.4-6
pve-kernel-5.15.116-1-pve: 5.15.116-1
pve-kernel-5.15.111-1-pve: 5.15.111-1

However, between two other servers that see each other on internal IPs, remote migration works without any problems. Is it necessary to have a port other than SSH port open? Please guide me.


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