Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Security-Basics
[Top] [All Lists]

0.0.0.0 Probes

Subject: 0.0.0.0 Probes
Date: Thu, 21 Oct 2004 13:47:24 -0700
Gurus,

Over the last few days my external NIDS (outside firewall) has picked up huge amount of HTTP Probe (over 50,000/day) with source IP address 0.0.0.0. The destinations are every IP address on my public-DMZ. These are just HTTP Probes. This traffic is being dropped by my firewalls. Internal IDS does not show any of this event. Initially, I thought it was just normal scan, but since it is occurring everyday with that high frequency, I got more curious.

However, I'm trying to understand what / how does the 0.0.0.0 Source mean. Could some of you kindly shed light on this fellow? I have googled it and done normal research.. but still not 100% clear. Is it something that we have mis-configuration? Is it broadcast traffic? Can I user my router to block this? .. all normal questions to defend my assets..

Thank you,

John

_________________________________________________________________
Check out Election 2004 for up-to-date election news, plus voter tools and more! http://special.msn.com/msn/election2004.armx


<Prev in Thread] Current Thread [Next in Thread>