Re: "Illegal character(s) in hostname" problem

[Brandon Enright <bmenrigh () ucsd edu>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thu, 2 Apr 2009 18:35:16 +0300 or thereabouts Henri Salo
<henri () nerv fi> wrote:

> On Thu, Apr 02, 2009 at 04:48:29PM +0200, Daniel Roethlisberger wrote:
> > Henri Salo <henri () nerv fi> 2009-04-02:
> > > I have seen this before. Has there been any patches against this?
> > > Do you know why it happens?
> > >
> > > fgeek@foo:~$ /usr/bin/nmap -P0 -sV 208.53.138.195
> > >
> > > Starting Nmap 4.85BETA7 ( http://nmap.org ) at 2009-04-02 17:12
> > > EEST Illegal character(s) in hostname -- replacing with '*'
> > > <snip>
> >
> > That IP address has an illegal PTR record in reverse DNS.
> > It points to the DNS root node (".").
...snip...
> Ok. Thank you. Why does Nmap even check the hostname since I was
> using IP-address?
>
> ---
> Henri Salo


Nmap perform a reverse-lookup on all IPs you scan unless you use the
"-n" option.  Most people prefer to see a hostname over an IP in their
scan results.

Brandon

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.10 (GNU/Linux)

iEYEARECAAYFAknU3vYACgkQqaGPzAsl94KSRQCcCW63K024QtjAbs0tFpLqFNPy
rssAnAgkH0232vOO8DKoBKraCxoLSQJU
=sVmX
-----END PGP SIGNATURE-----

_______________________________________________
Sent through the nmap-dev mailing list
http://cgi.insecure.org/mailman/listinfo/nmap-dev
Archived at http://SecLists.Org