Nmap Development mailing list archives
Re: -Pn, should I use it or not?
From: Hongyi Zhao <hongyi.zhao () gmail com>
Date: Fri, 27 Mar 2015 04:05:22 +0000 (UTC)
On Fri, 27 Mar 2015 01:26:23 +0100, Jacek Wielemborek wrote:
If you know that the host is up, it's pointless. Without -Pn, Nmap by default does "-PE -PS443 -PA80 -PP" and an ARP ping if possible. This means a SYN to port 80, an ACK to 443, ICMP echo and address mask query. If all of them fail, you'd get a false negative. The script wouldn't run without a port open anyway, so I don't think there's any gain to not using -Pn in your case.
Thanks for your hints. Regards -- .: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :. _______________________________________________ Sent through the dev mailing list https://nmap.org/mailman/listinfo/dev Archived at http://seclists.org/nmap-dev/
Current thread:
- -Pn, should I use it or not? Hongyi Zhao (Mar 26)
- Re: -Pn, should I use it or not? Jacek Wielemborek (Mar 26)
- Re: -Pn, should I use it or not? Hongyi Zhao (Mar 26)
- Re: -Pn, should I use it or not? Jacek Wielemborek (Mar 26)