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Mitel Forums => Mitel MiVoice Business/MCD/3300 => Topic started by: bluewhite4 on June 29, 2020, 09:10:47 PM

Title: Close VNC Port on EX Controller
Post by: bluewhite4 on June 29, 2020, 09:10:47 PM

Network scans are showing port 5091, commonly used for VNC, open on all three EX controllers that we have. I'm able to successfully connect on that port number, via telnet, to the management IP of the controllers.

Anyone have any idea on how to shut that down/close the port? I don't see any documentation that it should be open or is used by anything.

Title: Re: Close VNC Port on EX Controller
Post by: sarond on June 30, 2020, 05:04:04 AM

Pretty sure that's console access.

Check out
https://www.mitel.com/document-center/business-phone-systems/mivoice-business/mivoice-business/all-releases/en/ex-controller-installation-and-administration-guide

Title: Re: Close VNC Port on EX Controller
Post by: bluewhite4 on June 30, 2020, 09:06:32 AM

Reading through the document, thanks by the way I hadn't been able to find that one.

When you say console, are you referring to how the EX uses VNC in appendix A for the Static IP Address setup?

Title: Re: Close VNC Port on EX Controller
Post by: sarond on July 01, 2020, 12:30:16 AM

I've never installed an EX before so not 100% sure.

I believe it is used in a way similar to the RS232 port would be on physical 3300 controllers, so debugging and console access (CLI). It seems likes it directly connects you to the shell.

Title: Re: Close VNC Port on EX Controller
Post by: sunspark on July 08, 2020, 06:29:17 PM

Try to use the web gui

Title: Re: Close VNC Port on EX Controller
Post by: bluewhite4 on July 13, 2020, 04:54:39 PM

Level 2 support found the answer.

In the EX Controller webpage go to VM-tab and change the Vnc ID for the MIVB from 1 to -1. Reboot afterwards.

This disables the port and makes my auditors happy.

Title: Re: Close VNC Port on EX Controller
Post by: sunspark on December 02, 2020, 10:09:19 AM

Quote from: bluewhite4 on July 13, 2020, 04:54:39 PM

Level 2 support found the answer.

In the EX Controller webpage go to VM-tab and change the Vnc ID for the MIVB from 1 to -1. Reboot afterwards.

This disables the port and makes my auditors happy.

KMS : Document ID HO3987