sudo apt-get update && sudo apt-get upgrade
You don't need to run this if you already started the Updates from the updater.
If you want to check to if Firewall "ufw" is active type in Terminal sudo ufw status verbose
The outcome should look like this:
youruser@yourcomputer:~$ sudo ufw status verbose
[sudo] password for youruser:
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing)
New profiles: skip
youruser@yourcomputer:~$
I also suggest to install Google Chrome 64bit from here: https://www.google.com/chrome/browser/desktop/index.html
Be patient with the install, it takes a while and towards the end it will say "Installed" but really isn't, you will see if you stay and baby sit it.
Install the one that says Debian/Ubuntu or something to that effect.
This is why, here is a little quote from HTG
"Officially, the latest version of Flash on Linux is only available via Chrome — it’s bundled and comes with Chrome itself. You don’t have to do anything special to get it, and updating Chrome automatically updates the Flash plug-in on Linux, Windows, Mac OS X, and even Chrome OS."
Here is the article, don't let it overwhelm you it's just there if you are interested.
http://www.howtogeek.com/193876/using-firefox-on-linux-your-flash-player-is-old-and-outdated/
Edited by pcpunk, 12 November 2015 - 02:48 PM.