The remote console port is actually 903. Are you having problems logging in using the VI Client to VirtualCenter or just accessing the Console function of the VM's? Can you connect directly to the ESX server and log in with the VI Client?
Port 902
Used By:
• ESX
• VirtualCenter
• VI Client
Authentication traffic for the ESX Server host and virtual machine configuration.
Use Port 902 for the following:
• VI Client access to the VirtualCenter Server.
• VirtualCenter Server access to ESX Server hosts.
• Direct VI Client access to ESX Server hosts.
• ESX Server host access to other ESX Server hosts for migration and provisioning.
Incoming TCP, Outgoing UDP
Port 903
Used By:
• ESX
• VirtualCenter
• VI Client
Remote console traffic generated by user access to virtual machines on a specific ESX Server host.
Incoming TCP