A distributed denial-of-service attack requires zombies running on numerous machines to perform part of the attack simultaneously. If you were a system administrator looking for zombies on your network, what would you look for?

What will be an ideal response?

This is a difficult question because zombies arenot usually planted in files named “ZOMBIE.EXE,” for example. The best defense is to know what belongs on the system, from a copy of the system made right after the current system is loaded or from a file integrity checking tool such as Tripwire.