Nimda does its scanning using regular HTTP (TCP port 80) (For more information on ports, go to: Explanation of ports). Thus, if your machines are not public Web servers, you could/should filter that traffic. For machines that are public Web servers, you obviously cannot do that.
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
Dig Deeper on Security Resources
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.