[ale] Nmap host up/down status

[Chris Fowler]

----- Original Message -----

> From: "dev null zero two" <dev.null.02 at gmail.com>
> To: "Atlanta Linux Enthusiasts" <ale at ale.org>
> Sent: Friday, October 10, 2014 4:04:47 PM
> Subject: Re: [ale] Nmap host up/down status

> "nmap -sn host"

> if that is unreliable, you could try "nmap -sn -PE -PP -PM -PO host"

-sn: Ping Scan - disable port scan 

In my case ping would not get a response from Windows. 

-PE/PP/PM: ICMP echo, timestamp, and netmask request discovery probes 
-PO[protocol list]: IP Protocol Ping 

Are there any cons to doing that? On my tests where a host is down it does not take much longer than just '-sn' 

Chris 
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