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Re: Disable ZeroConf: how to ?



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Am Mi den  2. Mär 2011 um 18:25 schrieb Bastien ROUCARIES:
> More and more packages depend on avahi aka zeroconf. I have found some information on http://wiki.debian.org/ZeroConf 
> 
> Because I work in a untrusted work place and home network (public networks, wifi...) I whish to purge zeroconf functionnality.

I fighted this bunch of functionality since long ago. The whole zerconf
stuff is only useful in secure and clear defined environments. But there
you don't need it anyway.

With zeroconf there is some thinks that play together and has to be
killed:
- - avahi (-daemon) -- as you find by yourself -- and the packages
  zeroconf, libnss-mdns, avahi-autoipd, avahi-daemon.
- - The package slpd
- - The linklocal route (169.254.0.0)

> Does avahi could be disable (using kernel level firewalling is not from my point of view a solution) ?

See above.

> And more specifically from an administrator point of view does avahi could library could be made purgeable and no more than suggest 
> dependencies (I am willing to fill a mass bug report because purging avahi will purge gnome and kde ...) ?

Well, as I do not use gnome nor kde I am not concerned from this
dependencies.

> And moreover could you give a clear answer about the security risk on untrusted network ? 

That is difficult. It depends on the environment. If you have a clear
and secure environment, zeroconf is not that insecure. But in all other
environments you do not want to have it.

Regards
   Klaus
- -- 
Klaus Ethgen                            http://www.ethgen.ch/
pub  2048R/D1A4EDE5 2000-02-26 Klaus Ethgen <Klaus@Ethgen.de>
Fingerprint: D7 67 71 C4 99 A6 D4 FE  EA 40 30 57 3C 88 26 2B
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