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Re: Limiting attack surface for Debian sshd

On 4/16/25 03:14, Erwan David wrote:

On Wed, Apr 16, 2025 at 03:16:29AM CEST, Lee <ler762@gmail.com> said:

On Mon, Apr 14, 2025 at 10:27 AM Dan Purgert wrote:

On Apr 14, 2025, Marc SCHAEFER wrote:

I wrote:


If you
    sudo systemctl disable cups # and maybe others

Actually, if you follow the discussion, the CUPS Bonjour auto-discovery

    - it presumably handled by the cups-browsed package
      (you can uninstall it, or systemctl disable it,
       if you don't want printer auto-detection on your
       network)

    - it could also be handled by mDNS (?)

Yep, 'cups-browsed' is the mDNS listener service (plugin for avahi?) so
that cups can find printers announcing themselves via mDNS.

I'm not sure I understand, but
$ sudo systemctl stop cups.service

$ lp -d Canon_MG3600_series check-for-updates.sh
lp: Bad file descriptor

You stopped cups (ie the whole printing system), not cups-browsed (the mDNS listener to get printers of the local
network announcing themselves by Zeroconf)
Which brings up the fact that if cups-browsed is present, it disables the factory drivers which run my 2 brother printers flawlessly, every feature listed on the boxes Just Works,  with the cups flavor of cups drivers which are grossly broken and have been for a decade or more. I lose tray choice, color is weak and afu on my color inkjet and my B&W laser loses duplex and doesn't properly respond to a formfeed. 

Cheers, Gene Heskett, CET.

--
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 soap, ballot, jury, and ammo. Please use in that order."
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 - Louis D. Brandeis
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