Add required ports

[huseyinkozan]

After have some problem listing and using the t2 over LAN [0], I tried to disable the firewall at Ubuntu 14.04 and it solved my problem.

Shouldn't we add required ports (mdns for ex.) to the docs ?

[0] tessel/t2-cli#650

[johnnyman727]

@huseyinkozan great job investigating this. I think we should definitely add this information to the docs. Can you provide a little more detail about how you disabled the firewall?

mDNS uses port 5353, I believe. Is there a way to open up comms only on that port?

[huseyinkozan]

To disable the firewall :

sudo ufw disable

To open a port (for ex:5353) using ufw:

sudo ufw allow 5353

This will do same thing:

sudo ufw allow mdns

Here the detailed Ubuntu ZeroConf HowTo page:
https://help.ubuntu.com/community/HowToZeroconf

And there is another port (3702) at ZeroConf wiki page that I want to try. I will give you info after try it:
https://en.wikipedia.org/wiki/Zero-configuration_networking

[johnnyman727]

@HipsterBrown more info on mDNS debugging.

[huseyinkozan]

Tried these ports but no luck:
5353, 5350, 5351, 1900, 5297, 5298, 515, 53, 139, 445, 68, ... and some others.

Investigating ...

https://support.apple.com/en-us/HT202944

[Frijol]

Is this issue still in need of resolution?

[huseyinkozan]

Dont know. I am not depend on it.