Does Ubuntu come with a built in firewall?
3268
Is there a preinstalled or automatic firewall?
30177
Set up BIND9 as DNS Firewall
117771
What is the Ubuntu "built in virus protection"?
129317
Ubuntu vulnerable to malware sites?
56661
Ubuntu 16.04 LTS Network Manager cannot add VPN - greyed out
34450
Does using the guest account in Ubuntu help for Spectre and Meltdown protection?
142833
How to Set Up Linux Server As A Router with NAT
134196
Ubuntu With Windows Safe?
43363
Is it possible to enable System Protection from the command prompt?
145948
Any real-time antivirus for Ubuntu?
72342
What server control panels are available for Ubuntu Server?
21164
How can I see what ports are open on my machine?
87093
How to remove Ubuntu's automatic internet connection needs?
51061
Is there an optimal configuration or any way in which I can effectively connect
94282
Is Ubuntu Server only available with the command line?
134775
Recommended reverse firewall applications for linux?
101752
Per process firewall?