Nmap Development mailing list archives

Re: Compile error on netbsd


From: David Fifield <david () bamsoftware com>
Date: Mon, 31 Aug 2009 13:01:02 -0600

On Mon, Aug 31, 2009 at 02:46:46PM -0400, Jay Fink wrote:
Your right - char * works fine; the first time I tried this I don't
think I waited long enough.

Okay, good. I committed that change in r15376.

Check this out:

colico$ time ./nmap localhost

Starting Nmap 5.05BETA1 ( http://nmap.org ) at 2009-08-31 09:36 EST
Interesting ports on localhost (127.0.0.1):
Not shown: 999 closed ports
PORT   STATE SERVICE
22/tcp open  ssh

Nmap done: 1 IP address (1 host up) scanned in 18.29 seconds
       18.32 real         0.28 user         0.07 sys

Same code on osX:

[14:36:36 :~/src/nmap]$ time ./nmap localhost

Starting Nmap 5.05BETA1 ( http://nmap.org ) at 2009-08-31 14:36 EDT
Interesting ports on localhost (127.0.0.1):
Not shown: 998 closed ports
PORT    STATE SERVICE
22/tcp  open  ssh
631/tcp open  ipp

Nmap done: 1 IP address (1 host up) scanned in 6.56 seconds

real  0m6.743s
user  0m0.185s
sys   0m0.206s

There could be a lot of different reasons for different performance on
different platforms. This case looks like it's probably rate limiting,
if it's repeatable. 1000 ports in 6.743 seconds is 149.25 ports per
second, which is about the RST rate limit of Mac OS X. The NetBSD result
is 54.59 packets per second; you might check if there's a rate limiter
in place.

David Fifield

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