Hi Jmodi,
Feel free to put any SAV for Linux questions you may have to the Connect forum. There are several very good Linux admins active here. I'm confident we will be able to help you get those Linux boxes protected!
I recommend that you definitely ensure those Linux machines are patched, have an AV like SAVFL, and are following best security practice with regards to configuration, passwords, and third party program patches/updates. Symantec is aware of a number of recent threats that target this OS. Security Response has blogged publically about a few of them. Other security news sources have covered others.
https://www-secure.symantec.com/connect/blogs/remote-linux-wiper-found-south-korean-cyber-attack
https://www-secure.symantec.com/connect/blogs/when-web-servers-serve-evil
All the best!
Mick