Sophos Firewall Teamviewer

In the vast majority of cases teamviewer will always work if surfing on the internet is possible. 24 7 threat hunting detection and response. So i looked in the tv log and found that the proxy the sophos xg returned a http status of 502.

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How To Enable Only Team Viewer Port Firewall And Policies Xg

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Teamviewer uses port 80 443 tcp as well as a proprietory port 5938 tcp that can be used to establish a connection from client to ts keepalive server or direct peer to peer connections if this port is forwarded to the client.

Sophos firewall teamviewer. This allows for a bit much in my opinion so i disabled it. We do have a gpo to force teamviewer client to use https by default and manual proxy w o user. But i can t found anything. They run sophos enterprise antivirus and barracuda firewall.

At web protection we do have regex for teamviewer for any in port 80 443. Teamviewer makes outbound connections to the internet which are usually not blocked by firewalls. They claim to have rules for teamviewer in place it used to work fine up to 30 days ago and now they want to whitelist the ips where the connections are coming from. Sophos central firewall reporting provides flexible reporting in the cloud for all your xg firewalls with easy tools to create your own custom reports.

Probably it s also necessary to use https scanning to block same urls via https not sure if teamviewer also uses https as fallback i m using https scanning anyway lets give it a try. I searched the xg logfiles first the normal logs in the log viewer. On setup i set the default firewall policy to accept any service going to wan zone when in lan zone and coming from any network. I tried allowing for http and https but they still wont come up with a partner id.

If teamviewer still is able to connect it s maybe also using a open firewall port i use a very strict outgoing ruleset o yep sir works. Advanced endpoint protection and network security fully synchronized in real time. Firewall with synchronized security built in. Sophos central firewall management includes powerful cloud based group firewall management backup management one click firmware updates and rapid zero touch provisioning of new firewalls.

Try sophos products for free download now download sophos home. Teamviewer is designed to connect easily to remote computers without any special firewall configurations being necessary. Teamviewer connections are working fine till 17 1 4 the latest 17 1 firmware i remember. As soon as i did though my teamviewer hosts went offline.

Sophos is cybersecurity evolved. Since 17 5 1 tv connections are not working. Behind a non transparent proxy you have to set teamviewer up to use the proxy of course.