Nmap Development mailing list archives
Re: NSE loop issue with filtered ports
From: Brandon Enright <bmenrigh () ucsd edu>
Date: Thu, 29 Nov 2007 22:41:01 +0000
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thu, 29 Nov 2007 16:34:28 -0600 "Thomas Buchanan" <TBuchanan () thecompassgrp net> wrote:
-----Original Message----- From: nmap-dev-bounces () insecure org [mailto:nmap-dev-bounces () insecure org] On Behalf Of Thomas Buchanan Sent: Thursday, November 29, 2007 4:07 PM To: nmap-dev () insecure org Subject: NSE loop issue with filtered ports<snip>This issue shows up on both Linux and Windows test systems. If anybody would like the test script I used, I'll be happy to share it. If any more information would be helpful, I'll try to provide it. Thanks, ThomasA little additional testing showed that this behavior seems to have been introduced between nmap-4.22SOC6 and nmap-4.22SOC7. Could it be related to the change from l_nsock_connect to l_nsock_connect_queued?
Almost certainly. There was a file handle limitation (and thrashing) issue to which Majek and David cooked up solutions that were both applied. A minimum number of parallel NSOCK handles was set to 10 so that NSE could still get work done even when the max-parallelism was really low. Any script that tries to open up more than the max-parallelism (at least more than 10) before using them will deadlock. I suppose there could be other issues too. Can you provide your script or at least describe what triggers the issue? Brandon -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iD8DBQFHTz/9qaGPzAsl94IRAvzpAJ4/LxB7lo8SToQH2Mj1rOrZrdzRlQCggfZq FSnowo5UK18XOJ9cjZTKrS4= =gWEw -----END PGP SIGNATURE----- _______________________________________________ Sent through the nmap-dev mailing list http://cgi.insecure.org/mailman/listinfo/nmap-dev Archived at http://SecLists.Org
Current thread:
- NSE loop issue with filtered ports Thomas Buchanan (Nov 29)
- RE: NSE loop issue with filtered ports Thomas Buchanan (Nov 29)
- Re: NSE loop issue with filtered ports Brandon Enright (Nov 29)
- RE: NSE loop issue with filtered ports Thomas Buchanan (Nov 29)
- Re: NSE loop issue with filtered ports Brandon Enright (Nov 29)
- RE: NSE loop issue with filtered ports Thomas Buchanan (Nov 29)