September 23, 2007

Hacking Nmap: Using Nmap to Calculate Network Response Time

digg_url = 'http://www.digg.com/software/Hacking_Nmap_Using_Nmap_to_Calculate_Network_Response_Time'; I usually don't cross-post information about articles my other sites, but this one has some information that might be useful for network professionals. I've just posted an article that shows how to use Nmap to get... Read more...
Posted by james_messer at 10:42 PM | Comments (0)

September 03, 2007

It's flattering. No, really. Ok, not really.

I'd like to thank everyone for their "heads-up" email messages regarding an article that Slashdot.org featured recently. I tend to agree with most of you, there are shocking similarities to Kirby "Kev" Tucker's article and my Nmap ebook. Shocking, I... Read more...
Posted by james_messer at 02:37 AM | Comments (1)

July 15, 2007

The Professor Messer Webinar Series - Nmap Summer School

The Professor Messer webinar series continues with our online Nmap Summer School web conference. This live webinar is scheduled for Thursday, July 19 at 9 PM Eastern Time, and everyone is invited! http://www.ProfessorMesser.com/webinar/ In this month’s webinar, we’ll show you... Read more...
Posted by james_messer at 08:51 PM | Comments (0)

March 15, 2007

Another Free Nmap Webinar!

The Professor Messer webinar series continues with our latest live online training session, “Introduction to Nmap.” We’ve scheduled the webinar for Thursday, April 5th at 9 PM Eastern Time, and we’re planning to cover a lot of great Nmap content.... Read more...
Posted by james_messer at 10:55 PM

February 08, 2007

Join us for a free Nmap webinar!

On Thursday, February 22nd at 8pm Eastern Time, we’re hosting a webinar titled “Nmap: What You Need to Know Now.” The webinar will be one hour of free Nmap training, where we'll update you on the latest Nmap features, demonstrate... Read more...
Posted by james_messer at 08:48 AM | Comments (0)

January 29, 2007

The Countown is Underway!

One of my readers sent me an email last week and asked where I’d been, so I thought I’d post an update. I’ve not posted anything on Network Uptime lately because we’ve been extremely busy with a new Nmap-related project.... Read more...
Posted by james_messer at 11:02 PM | Comments (0)

July 27, 2006

Will an nmap Operating System scan work through a firewall?

From the mailbag, Jesse C. writes:

I have been assigned a project within my organization to perform OS Fingerprinting on subnets. What I find is that end-users that do not use Windows Firewall (have it disabled or not installed), I am able to detect their OS with no problem. The problem lies that many new users have Windows SP2 Firewall enabled which are limiting my scan results. I am using the following nmap command in Linux. (# nmap -sS -O -PI 192.168.0.1/24)

What should I do to accurately perform an OS Fingerprint scan on my subnet? If not 100% accurate, what nmap commands would your suggest?

Read more...
Posted by james_messer at 07:12 PM | Comments (0)

July 23, 2006

The Secret of the Slow Scan


I've uploaded some new content for my nmappers, and you're going to love my latest "mystery" movie!

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Posted by james_messer at 02:53 AM | Comments (1)

June 02, 2006

Are you in the group?

I've gotten some great feedback from the recent nmap tips and tricks video. Keep those comments flowing! There's also an important group of nmap enthusiasts that have purchased my book, Secrets of Network Cartography: A Comprehensive Guide to nmap. To... Read more...
Posted by james_messer at 04:37 PM | Comments (0)

May 31, 2006

Free Video from NetworkUptime.com!

I've got a special bonus for nmap enthusiasts - a free video of tips and tricks!

Read more...
Posted by james_messer at 08:07 AM | Comments (0)