Hello All,

I have a reasonable amount of experience coding (javascript, ASP,PHP, SQL) but I am new to unix. I recently set up a server (Red Hat Linux) for an extremely busy site and a month later I suffered a BIND DNS attack and now I think someone is doing TCP Flooding.

How do I get started protecting my server? Are there any good tools to simulate attacks or do I have to go out and do actual attacks on my own server?