Re: using --host-timeout with multiple hosts

[David Fifield <david () bamsoftware com>]

On Tue, Nov 06, 2012 at 05:51:21AM -0500, Ryan Giobbi wrote:
> When I use
> nmap -sT <IP>* *--host-timeout 2m
> the scan works and finishes
>
> However, when I scan more IPs
> nmap -sT -iL <IP_list>* *--host-timeout 2m
> the scan times out (for the same IP) even though it was run from the same
> host as the first.
>
> Is this because nmap takes a longer time to scan some hosts when multiple
> addresses are scanned?

That's probably right. If scanning one host takes 1:30, and scanning two
takes 2:10 (assuming they finish at the same time), then both will time
out with a 2m timeout. We should perhaps prorate the passage of time
according to the number of hosts being scanned, but that is different
than what --host-timeout means now.

David
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