Nmap Hackers: Re: UDP port scanning...

[Simple Nomad <thegnome () nmrc org>]

Yes but if the firewall or router is simply dropping the packets (common
with filter-based rules) then all UDP ports will show up as open, when in
fact they are not.

-         Simple Nomad          -  No rest for the Wicca'd  -
-      thegnome () nmrc org        -        www.nmrc.org       -
-  thegnome () razor bindview com  -      www.bindview.com     -

On Wed, 9 Feb 2000, Darren Reed wrote:

> It maybe worthwhile putting in a note when doing UDP scan that the
> "open ports" are generated when no packets are received back.  Too
> many lay people seem to assume that "all UDP ports open" as reported
> by nmap is a `bad thing' when in fact it's a good thing(tm).
>
> Darren