Proxmox VE 4.x and later port list

• Web interface: 8006
• pvedaemon (listens only on 127.0.0.1): 85
• SPICE proxy: 3128
• sshd (used for cluster actions): 22
• rpcbind: 111
• corosync multicast (if you run a cluster): 5404, 5405 UDP