Re: How to tweak tools against targets that block ICMP

[John Kinsella <jlk () thrashyour com>]

Many tools have secondary methods to determine if a host is alive.   
For example, look at nmap's -P* flags (such as -P0, -PU, -PS).  
Basically, they allow you to either just not check to see if a host is  
alive and scan it anyways, or specify an alternative method of  
checking for life, eg check port 22 instead.

John

On Jul 17, 2010, at 3:23 AM, Jacky Jack wrote:

> Hi
>
> Some tools/scanners first send ICMP packet before they do their job.
>
> So, for some hosts which block such packets, I have no idea on how to
> use those tools.
>
> How can I tweak it so that I can use it?
>
> I refer to to the closed-source tools/scanners.
>
> Thank you.
>
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