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Teamviewer, Remote Support, VNC

by Mountain Computers Inc., Publication Date: Saturday, March 2, 2019
View Count: 551, Keywords: Teamviewer, Remote Support, RDP, VNC, Hashtags: #Teamviewer #RemoteSupport #RDP #VNC

I had the opportunity just recently to work on some financial firms networks and found some other IT companies have this idea that port 5800 and 5900 are okay to have open without any IP policies in place to restrict inbound port forward to services and assets.
What? you mean TightVNC was allowed from the outside into their network unbound or constrained? Yep.
I turned that off right away.
So for those of you who have the opportunity to look at port management on border security routers, be sure to make sure security and address objects are not just laying around and unmonitored.
Be very wary when you see port 5800 and 5900 just laying open. Make sure port 3389 is not just being left open as well. If you don't know what 3389 is for, umm..google it, and change it right away.
We use Teamviewer and very randomly on business networks and those only specific to certain needs.
more to come..

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