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 Incidents
[Top] [All Lists]

Re: Increase seen in port probes since Tuesday afternoon

Subject: Re: Increase seen in port probes since Tuesday afternoon
Date: Thu, 30 Dec 2004 21:44:30 +0100
On Thu, Dec 30, 2004 at 11:22:51AM +0200, BahdKo wrote:

Each probe involves the machine sending three packets to each port.

Which is default behaviour of Windows boxes - sending three SYN
packets close after each other even when the destination port is
reachable and closed (ie. responding with TCP RST).

Martin Mačok
IT Security Consultant

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