Can changing an internet provider company cause team viewer to stop connections

[Miyang]

Dear Colleagues,
Does changing an internet provider company (having wireless network with non-static IPs) can stop team viewer to connect?

After not being connected, I have updated teamviewer on my both computers to 10.0.47374 version.
After putting my both computer online (on same internet) I tried to connect them through team viewer but still no connection. When I connect from one computer to other, the other computer status changes from ''Ready to connect To Incoming connection'' after that nothing. This shows that there is established some sort of communication but not complete connection.

Secondly, on my research on this issue, I found someone saying about port forwarding process. I am not sure is it necessary in my case. Kindly see the link for details:
http://portforward.com/english/routers/port_forwarding/Quanta/Mobily-4G/Teamviewer.htm
I have also attached snapshots of my router, if yes for port forwarding then were I should add either in DHCP server or Port management?

I will be thankful to anyone who will check/reply the issue in little more details.

[matt]

Dear Colleagues,
Does changing an internet provider company (having wireless network with non-static IPs) can stop team viewer to connect?

Yes it certainly can....

[Danl]

Could you elaborate on that? I find that a disincentive to using TeamViewer as a professional tool. If I'm on travel, I want some assurance I can connect back to my home machine. If I land at a place where the local internet provider doesn't allow Teamviewer to be used, it would be pretty crappy.

[matt]

Many wifi hotspots have locked down ports.
Many do not allow port 25 traffic in an effort to minimise SPAM.
Many workplaces lock down all sorts of stuff. There is some software about that can slow all outgoing traffic to a crawl, in a bit to stop corporate networks being used for file sharing or Torrents.
Some countries block lots of specific ports or websites, in an effort to impose control over web content.

The question was

Does changing an internet provider company (having wireless network with non-static IPs) can stop team viewer to connect?

The answer to that is 'yes, changing your ISP CAN stop teamviewer from working.

Have I seen that? Not at an ISP level, but that is certainly possible.
The same as it is possible to block (or copy) any internet traffic.

[Danl]

What port does TeamViewer use? Comcast blocks port 25, and for a machine on that network I have no trouble connecting to it with Teamviewer, or connecting from it with Teamviewer.

Can one change the port that TeamViewer uses?

I've been to many locations with my laptop, and I don't remember ever being to one where I couldn't connect with TeamViewer.

[matt]

https://www.teamviewer.com/en/help/334-Which-ports-are-used-by-TeamViewer

http://mediarealm.com.au/articles/2014/10/block-teamviewer-network/
I also know that you can block Teamviewer by using a filter like the ones offered by opendns >> www.opendns.com/

There are heaps of other ways to block teamviewer if that's what you are after

[Danl]

Interesting. Not completely obvious why anyone would want to specifically block Teamviewer. That seems like a wonderful way to lose high-end business.

[matt]

If I didn't want people from work / school to Teamview back to home to play games / surf porn all day instead of working / studying...
If I had a wi-fi hotspot that I didn't want to let users use my hot-spot to perform potentially illegal things (like what happens in movies when the government chases 'the money')
If I had an immense dislike for TeamViewer, and wanted my customers to use my preferred support mechanism that they pay me for...

quite a few scenarios 'why' to be honest

[Danl]

Not if you're a hotel, or any business establishment. Word would get around pretty fast in the professional world if one of those were blocking TeamViewer, and that's a population that you as a business establishment don't want to piss off.

But yes, maybe if you've gotten paid by a TeamViewer competitor to block it, it might be in your professional interest. If you want your hotspot not to be used to perform "illegal things", I can think of many many more things you'd want to block than TeamViewer. TeamViewer, with it's added latency, is a pretty crappy way to play online games. Surfing porn? Why in the world would you use TeamViewer to do that?

I'll ask right here. Has anyone found an establishment that blocks TeamViewer?