Solved

Unable to change Remote Desktop Protocol Port Number

Posted on 2014-12-21
8
108 Views
Last Modified: 2015-01-07
Hello Experts

I'm following the instructions in the following document to change the RDP port number, https://support.microsoft.com/kb/306759

However, when I change it to say 3391 I'm unable to RDP into the Windows Machine, OS Windows 7

Can someone help?

Cheers

Carlton
0
Comment
Question by:cpatte7372
  • 3
  • 2
  • 2
  • +1
8 Comments
 
LVL 57

Expert Comment

by:giltjr
ID: 40512201
Any firewalls between you and the target computer?
0
 
LVL 24

Expert Comment

by:VB ITS
ID: 40512204
Are you using the format computer.domain.com:3391 or <IP Address>:3391 in the Computer field in the Remote Desktop Connection client?
RDP-Custom-Port.pngYou can also try manually adding a rule in Windows Firewall to allow inbound traffic for the port 3391.
0
 

Author Comment

by:cpatte7372
ID: 40512442
VB

I'm using <ip address>:3391

I'm going to check the firewall

Cheers
0
 
LVL 24

Expert Comment

by:VB ITS
ID: 40512444
I'd say it's most likely the firewall as the default Remote Desktop rule is configured for port 3389. If you need help creating a new firewall rule to allow port 3391 then let me know.
0
Highfive + Dolby Voice = No More Audio Complaints!

Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

 
LVL 35

Expert Comment

by:Kimputer
ID: 40512565
Also, if your concern is about the internet security (exposing port 3389 is indeed a security risk for bruteforce attacks), just use a correct NAT rule instead of changing it on the PC. That way, internally, everything works without any modification, and externally, you use the different port number you wanted.
0
 
LVL 24

Accepted Solution

by:
VB ITS earned 500 total points
ID: 40512920
Only problem with that Kimputer is that not all routers are capable of doing this. I've seen cases where the router appears to have the ability to do this yet won't work for whatever reason. Firmware upgrades and even factory resets can't fix the problem so the client is either left with the choice to stick with VPN + RDP, use RD Gateway (if 443 is unused), change the RDP listening port, or replace the router entirely.
0
 
LVL 35

Expert Comment

by:Kimputer
ID: 40512991
Correct, a few years ago this problem was quite common. However in the past years, I have not seen this problem pop up on most brands of routers/modems I've come across.
0
 

Author Closing Comment

by:cpatte7372
ID: 40535193
Cheers
0

Featured Post

Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Suggested Solutions

If you get continual lockouts after changing your Active Directory password, there are several possible reasons.  Two of the most common are using other devices to access your email and stored passwords in the credential manager of windows.
The recent Microsoft changes on update philosophy for Windows pre-10 and their impact on existing WSUS implementations.
This Micro Tutorial will give you basic overview of the control panel section on Windows 7. It will depth in Network and Internet, Hardware and Sound, etc. This will be demonstrated using Windows 7 operating system.
The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…

759 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now