Forwarded ports 8006 and 3128 from the router to the proxmox node, I see a spice proxy from Internet via nc, but can't connect to a vm. Seems that something is missing. Got "connection refused".
Code:
# ss -tulpn | grep spice
tcp LISTEN 0 4096 *:3128 *:* users:(("spiceproxy work",pid=1123283,fd=6),("spiceproxy",pid=4233,fd=6))