0
votes
1answer
247 views

Where can I find books or articles about iptables and apparmor?

Where can I find a book or articles that doesnt tell me how to do a ls. Im looking for one where i can learn about: -iptables -apparmor I know there is ufw and gufw and no gui for app armor. I want ...
12
votes
5answers
19k views

How to secure ubuntu server from bruteforce ssh attacks?

I have my passwords secure, but I heard people complaining about perfomance of a server going down drastically when a bruteforce attack is taking place. How can I secure my ubuntu 10.10 server from ...