Nmap Development mailing list archives
Re: nmap -sP doesn't really send ICMP packets?
From: Fyodor <fyodor () insecure org>
Date: Tue, 6 Feb 2007 17:39:00 -0800
On Tue, Feb 06, 2007 at 10:55:34AM -0500, Burton Windle wrote:
Hello. nmap 4.20, complied locally on a Debian Testing system running Linux kernel 2.6.20. When doing an nmap -sP (to scan for machines that respond to ICMP Echo packets) nmap was reporting that a certain host was down. In fact, the machine responds to ICMP pings (Type 8, and sends back Type 0), but TCP/80 is filtered (no RST, nothing)
Thanks for the report. Are you running as root? Nmap cannot send ICMP packets without root privileges. Also, what does --packet-trace show when you do the scans? Cheers, -F _______________________________________________ Sent through the nmap-dev mailing list http://cgi.insecure.org/mailman/listinfo/nmap-dev Archived at http://SecLists.Org
Current thread:
- nmap -sP doesn't really send ICMP packets? Burton Windle (Feb 06)
- Re: nmap -sP doesn't really send ICMP packets? Fyodor (Feb 06)