Re: -Pn, should I use it or not?

[Hongyi Zhao <hongyi.zhao () gmail com>]

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 :.

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