While I'm learning Ubuntu, I still have lingering influence from my time with Windows. From force of habit I'm used to the idea that security programs like AntiViruses can conflict if you put more than one in the same environment. I'm looking into Ubuntu security solutions and I've settled on Ossec. Mainly because I was actually able to get it installed and running. I'm interested in other tools like Fail2Ban or DenyHosts but I wasn't sure if some of these tools could conflict with eachother.