Solved

completely block TeamViewer For FortiGate

Posted on 2016-09-25
5
990 Views
Last Modified: 2016-10-15
Hi.....
I need to completely block team access from outside to internal clients. I need to make sure in my network that no on uses team viewer in my network

i have Fortigate 300D
0
Comment
Question by:Mansour
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 
LVL 79

Assisted Solution

by:arnold
arnold earned 100 total points (awarded by participants)
ID: 41815455
Identify their IP range, and block outgoing traffic to that destination.

Adding the destination with a log event....

A simpler option in an AD environment, setup a software restriction GPO blocking the running of teamviewr.exe.
Note it will not prevent a determined individual from adjusting the application name, runn.........
0
 
LVL 70

Assisted Solution

by:Qlemo
Qlemo earned 100 total points (awarded by participants)
ID: 41815516
Blocking all IPs is hard to do, there are a lot of TeamViewer servers ...
Blocking the EXE itself is more promising, though easy to circumvent.
Anything else requires to analyze the traffic - very difficult, in particular with SSL.
0
 
LVL 28

Assisted Solution

by:Dr. Klahn
Dr. Klahn earned 100 total points (awarded by participants)
ID: 41815517
This page has a detailed explanation of one user's approach, which also short-circuits TeamViewer's fallback strategy of tunneling using port 80.

https://mediarealm.com.au/articles/2014/10/block-teamviewer-network/

However, as Qlemo points out above, if the application now tries to circumvent DNS blocking by using servers outside the teamviewer.com domain, it will probably be necessary to block the executable and hope none of your users are smart enough to rename it.
0
 
LVL 10

Accepted Solution

by:
Muhammad Mulla earned 200 total points (awarded by participants)
ID: 41816318
Under Application Control on your Fortigate, you will find 3 different signatures for TeamViewer in the Remote.Access category.

Block all of them under application overrides.
0
 
LVL 28

Expert Comment

by:Dr. Klahn
ID: 41844848
EE email requested stale question closure.
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This is a little timesaver I have been using for setting up Microsoft Small Business Server (SBS) in the simplest possible way. It may not be appropriate for every customer. However, when you get a situation where the person who owns the server is i…
Like many organizations, your foray into cloud computing may have started with an ancillary or security service, like email spam and virus protection. For some, the first or second step into the cloud was moving email off-premise. For others, a clou…
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

615 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