How can TeamViewer work without modifying firewall/router settings?

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All remote desktop software that I know about needs to modify firewall settings and open ports.

How can Teamviewer work without modifying them? Does some alternative software exist that can also do remote control without modifying network settings?

stighy

Posted 2011-03-17T16:11:35.690

Reputation: 1 135

Crossloop shutdown services since 2014, no longer available. – R J – 2017-12-10T10:50:07.260

"And, does exists some alternative software who"?? Please clarify that last line. – Supercereal – 2011-03-17T16:18:13.407

I think OP is looking for alternatives to Teamviewer which can do the same thing. – Lekensteyn – 2011-03-17T16:24:27.537

There are a lot of alternatives which use a server to set up the connection, so do not need open ports for incoming connections. I use Citrix GoToAssist. CrossLoop is another one. – paradroid – 2011-03-17T17:14:15.997

Answers

13

TeamViewer on the remote PC maintains an idle connection to the TeamViewer proxy servers and waits for a connection request. After receiving it, a direct UDP connection can be set up; see UDP hole punching.

Also try pwnat.

user1686

Posted 2011-03-17T16:11:35.690

Reputation: 283 655

Asked: 2011-03-17T16:11:35.690

Viewed: 27 403 times

Active: 2014-01-17T16:16:36.990