@JackWallington Please answer George’s questions first. As well let me add this one. Do you have a D-Link DGS-3620 switch between your HP desktop and the FOG server? If not you still might check to see if some kind of DOS attack prevention is enabled on a switch connecting those two - more information see here.

hello, I couldn’t find a solution to unlock my situation, I tried many things on promox and on fog, without succes again. So I decided to start a new install on another post, separated from the proxmox and it’s working fine. I think I’ll keep this solution so, thanks for your help and sorry to leave an unsolved issue, see you later !