Home page logo

nmap-dev logo Nmap Development mailing list archives

Possible bug report - nmap scan elapsed time changes into negative time
From: "Mark Furst" <mark.furst () clicksgroup co za>
Date: Fri, 25 Mar 2011 09:14:14 +0200

Hi there


While running a nmap scan on a huge internal network for several weeks, I noticed that the elapsed time changed into 
negative time.


I commenced the scan on 28 February 2011. The nmap command that I used is listed below:

# Nmap 5.35DC1 scan initiated Mon Feb 28 08:34:17 2011 as: nmap -sS -vv -p- -T4 -oA targetname-full-20110228 -iL 


Today's date:

Fri Mar 25 09:06:14 SAST 2011


Thus as the scan has been running for almost 4 weeks nonstop, it should display an elapsed time of over 600 hours by 
now. When getting the current nmap stats, I get the following output:

Stats: -592:-33:-30 elapsed; 82127 hosts completed (4936 up), 64 undergoing SYN Stealth Scan


System stats:

Linux bt 2.6.34 #1 SMP Wed Jul 21 09:51:09 EDT 2010 i686 GNU/Linux


System uptime:

root () bt:~# uptime

09:09:36 up 31 days, 23:57,  3 users,  load average: 0.09, 0.09, 0.03


cat /etc/issue:

BackTrack 4 R2 Codename Nemesis \n \l


Please let me know if you can replicate the issue and confirm whether it is a bug.




Mark Fürst (CISSP)
Information Security Officer

Clicks Group Limited

È: +27 82 999 7770

Ê: +27 21 467 3940
": www.clicksgroup.co.za

+: mark.furst () clicksgroup co za




This e-mail contains proprietary and confidential information some or all of which may be legally privileged. It is for 
the intended recipient only. If an addressing or transmission error has misdirected this e-mail,please notify the 
author by replying to this e-mail and then deleting same.If you are not the intended recipient you must not use, 
disclose, distribute, copy, print or rely on this e-mail. Clicks Group Limited, its subsidiaries and associated 
companies is not liable for the security of information sent by e-mail and accepts no liability of whatsoever nature 
for any loss, damage or expense resulting, directly or indirectly, from the access of this e-mail or any attachments 

This email has been scanned by the MessageLabs Email Security System.
For more information please visit http://www.messagelabs.com/email 

Sent through the nmap-dev mailing list
Archived at http://seclists.org/nmap-dev/

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]