Re: what are these? discard-daytime-time-nntp

[Shaul Karl <shaulka@bezeqint.net>]

> 
> --jQIvE3yXcK9X9HBh
> Content-Type: text/plain; charset=us-ascii
> Content-Disposition: inline
> Content-Transfer-Encoding: quoted-printable
> 
> On Mon, May 21, 2001 at 10:29:35PM +0200, Daniel de los Reyes wrote:
> > This is the output I get from nmap about things I am not sure what to do
> > about:
> >=20
> > 9       open        tcp        discard
> 
> discard is /dev/null for networks.  Generally not needed expecially if
> you are worried about attcks.
> 
> > 13      open        tcp        daytime
> 
> Prints the current date in a string form (e.g."Mon May 21 16:28:43
> 2001") ... generally not needed.
> 
> > 37      open        tcp        time
> 
> Outputs the current time as seconds sine the epoch in machine readable
> form.  Can be useful if network clients expect the service for crude
> time synchronisation (some windows clients can use this service).
> Otherwise not generally needed.
> 
> > 113     open        tcp        auth
> 
> The infamous "IDENT" protocol.  Totally worthless IMO but most IRC
> servers require this port to be open and returning information.
> Apparently some FTP servers require this service as well.
> 



I believe postgresql uses this as well.



> > 119     open        tcp        nntp
> 
> nntp is Network News Transport Service.  Apparently you are running a
> news server? (inn or cnews).  Otherwise not needed.
> =20
> > Can someone explain me what these services are and if I can safely
> > turn them off?
> 
> HTH,
> 
> --=20
> Nathan Norman - Staff Engineer | A good plan today is better
> Micromuse Ltd.                 | than a perfect plan tomorrow.
> mailto:nnorman@micromuse.com   |   -- Patton
> 
> --jQIvE3yXcK9X9HBh
> Content-Type: application/pgp-signature
> Content-Disposition: inline
> 
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.0.5 (GNU/Linux)
> Comment: For info see http://www.gnupg.org
> 
> iD8DBQE7CYq5F/RmbRyJNdgRAY+GAJ4s0ltWKcRI50Vb974XfyD6YIalGwCdHMFZ
> hVwNxF9p3yFacuvkqzZeBXw=
> =448b
> -----END PGP SIGNATURE-----
> 
> --jQIvE3yXcK9X9HBh--
> 
> 
> -- 
> To UNSUBSCRIBE, email to debian-user-request@lists.debian.org 
> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
> 

-- 
	
	Shaul Karl <shaulka@bezeqint.net>

Hillel used to say: If I am not for myself who will be for me?
Yet, if I am for myself only, what am I? And if not now, when?
                                          (Ethics Of The Fathers 1:14)