Nmap Development mailing list archives
Re: "Strange connect error" when using -sV
From: monzy merza <monzymerza () gmail com>
Date: Thu, 2 Feb 2006 23:29:41 -0700
some more info on this. did a few more runs with nmap 4. turns out that if i use -T2 i don't see the problem. recreated the problem with -T3, -T4. the ip in the example below and the ones in other tests belong to cisco 6509 switches. i am told by the admins that those switches are running cat os 7.6.9. and ssh is indeed enabled on them. on the paranoia set to T2 nmap 4 reports that it is unable to identify the version and outputs the fingerprint. (i'll submit the fingerprint once i ensure that i have accurate verion info for all of them, since there are multiple 6509's here ). also, on some of the tests i don't get the message" Got nsock WRITE error #32 (Broken pipe) " i just get the " Strange connect error from 192.168.3.12 (32): Operation now in progress nmap: nsock_core.c:273: handle_connect_result: Assertion `0' failed. Aborted " thats all i have for now... i'll keep digging. monzy On 2/2/06, monzy merza <monzymerza () gmail com> wrote:
hello All, i installed nmap 4 from source. ran a scan: [root@d root]# nmap -sV -T5 -p 22 192.168.3.0/24 Starting Nmap 4.00 ( http://www.insecure.org/nmap/ ) at 2006-02-02 18:08 MST Got nsock WRITE error #32 (Broken pipe) Got nsock WRITE error #32 (Broken pipe) Got nsock WRITE error #32 (Broken pipe) Got nsock WRITE error #32 (Broken pipe) Got nsock WRITE error #32 (Broken pipe) Strange connect error from 192.168.3.41 (32): Operation now in progress nmap: nsock_core.c:273: handle_connect_result: Assertion `0' failed. Aborted so i used 3.95 from another machine and got the same error. i used 3.83 from a third machine and got the same error. i ran several tests the same ip is not repeated in the error (from any version). may be i just have'nt run enough tests to start seeing the cycle. i have used nmap to scan the above ip space before, (as late as last week) and never gotten this message before. i ran the scans w/o the -sV option and there are no errors. any thoughts ? monzy
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Current thread:
- "Strange connect error" when using -sV monzy merza (Feb 02)
- Re: "Strange connect error" when using -sV monzy merza (Feb 02)
- Re: "Strange connect error" when using -sV Martin Mačok (Feb 02)
- Re: "Strange connect error" when using -sV monzy merza (Feb 03)
- Re: "Strange connect error" when using -sV Martin Mačok (Feb 02)
- Re: "Strange connect error" when using -sV monzy merza (Feb 02)