docker0 vs eth0 when gaining remote access to ubuntu desktop?

I’m trying to get remote access with screen sharing to my Ubuntu PC from my Mac. I need to be able to connect to it over the internet from another network. When I go finder>go>connect to server on my Mac and enter <ip-address>:5900 I get this error message

It says:

Connection failed to <ip-address>

Unable to communicate with <ip-address>. Make sure the remote computer 
is available and the firewall is not blocking screen sharing.

The thing is I'm not sure if I'm putting in the right IP address because when I run ifconfig I don't get any responses that say eth0, only docker0, enp4s0, and lo

I've been using the docker0 inet address, is this what I should be using? If not, how can I find the eth0 address?

Let me know if I need to post more information.

Thank You

TheMonkeyKing

Posted 2017-03-26T22:01:03.163

Reputation: 203

enp4s0 is your ethernet device; your system is using Predictable Network Interface names. eth0 is considered an unpredictable name. – quixotic – 2017-03-26T23:15:53.997

ping and tracert can be informative. So could the routing table. – Stephen Rauch – 2017-03-27T00:13:53.700

1@quixotic That IP address works when I'm on the same network, do you know how I can do this from an outside network across the internet? – TheMonkeyKing – 2017-03-27T00:52:54.343

you're probably using NAT on the local network; you'll have to setup the router to forward the necessary ports to the ubuntu system, and then you'd connect the mac to the router's external IP. see https://superuser.com/q/603831/685512 https://superuser.com/q/106688/685512 (and many many other versions of the same question)

– quixotic – 2017-03-27T01:20:54.723

docker0 vs eth0 when gaining remote access to ubuntu desktop?

No answers