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 Pen-Test
[Top] [All Lists]

nmap "Host x.x.x.x appears to be up" ... "(256 hosts up)"

Subject: nmap "Host x.x.x.x appears to be up" ... "(256 hosts up)"
Date: 14 Nov 2004 03:09:37 -0000


I am having an issue with a nmap host discovery scan (nmap -sP x.x.x.x/24) that 
is responding for 0 through broadcast 255 when there are only 30 hosts on that 
subnet.

At this point I am not sure if it is the router or switch that is responding to 
the ping sweep.

What does this usually mean?  There is no NAT and no filtering that I can tell, 
but this is not my forte'...

There are other subnets I can ping sweep with no problems...

Thanks!

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