Problem with vm console (proxmox 2.3)

[TonyDu92]

Hi ..
when i try to open THE VM CONSOLE , i have this error " Network error: could not connect to server: proxmox:5900 "
where a reload the console , i receive this error " network error remote side closed connection "
what i'm supposed to do .. ?
help me please

 

[mir]

Is port 5900 blocked by a firewall between your pve host and your client?

 

[TonyDu92]

how can i know if port 5900 is blocked ?