Re: Printing via LAN fails - SOLVED

From: Anthony Campbell (ac_at_acampbell.org.uk)
Date: 09/21/05

  • Next message: Anthony Campbell: "Re: Printing via LAN fails - SOLVED" 
    Date: Wed, 21 Sep 2005 18:08:24 +0100
To: debian-user@lists.debian.org

    On 20 Sep 2005, Antonio Rodriguez wrote:
    > On Tue, Sep 20, 2005 at 07:01:15PM +0100, Anthony Campbell wrote:
    > > On 20 Sep 2005, Anthony Campbell wrote:
    > >
    > > After some more googling I found someone else with the same problem. It
    > > was due to the -s switch on lpd, which is added by default by Debian.
    > > Removing this has fixed it.
    >
    > Would you kindly post a detailed description of what/how you did it?
    > Thanks.
    >
    >

    If you do ps ax | grep lpd you will probably find /usr/sbin/lpd -s. You
    don't want this switch for remote printing.

    >From the lpd man page:

              Traditionally, lpd would not use the output filter for remote printers.

         -s The -s flag selects ``secure'' mode, in which lpd does not listen on a TCP socket
                 but only takes commands from a UNIX domain socket. This is valuable when the
                 machine on which lpd runs is subject to attack over the network and it is desired
                 that the machine be protected from attempts to remotely fill spools and similar
                 attacks.

    I therefore went to /etc/default.lpd and commented out "OPTIONS="-s".
    Then I restarted lpd (/etc/init.d/lpd restart).

    I think you could also use the -b switch, which might be more secure
    (see the man page for lpd).

    Anthony 

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