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VPN Connection and Airprint with Avahi-Daemon
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kami22
Tux's lil' helper
Tux's lil' helper


Joined: 14 Apr 2006
Posts: 116

PostPosted: Thu Apr 03, 2014 7:58 am    Post subject: VPN Connection and Airprint with Avahi-Daemon Reply with quote

Hi everyone,

i am running a gentoo system and using my AVM Fritzbox Router to get a external VPN connection to my local network. If i connect through my AVM Router i get a local IP and everything is working fine, but i cannot find any printer device with my Iphone over Airprint.
If i am physically in my local WIFI network everything works fine. So why can i not find the printer over VPN connection?

Cu kami
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gerdesj
l33t
l33t


Joined: 29 Sep 2005
Posts: 621
Location: Yeovil, Somerset, UK

PostPosted: Sat Apr 12, 2014 4:36 pm    Post subject: Re: VPN Connection and Airprint with Avahi-Daemon Reply with quote

kami22 wrote:
Hi everyone,

i am running a gentoo system and using my AVM Fritzbox Router to get a external VPN connection to my local network. If i connect through my AVM Router i get a local IP and everything is working fine, but i cannot find any printer device with my Iphone over Airprint.
If i am physically in my local WIFI network everything works fine. So why can i not find the printer over VPN connection?

Cu kami


Hmm, iPhone support in the Gentoo forums!

I suspect that multicast is not working over the VPN. I am not sure but I think that is how Apples do their device discovery. Your Fritzbox may have an option to fix multicast to work through a VPN - it's a Linux box I believe, so you may have to SSH into it and do some fiddling if options aren't available in the GUI.

So, sorry no definite answer but I suggest you find out how device discovery works for Airprint and then Google around for how to get it working over a VPN. You may find looking into multicast snooping useful.

Incidentally you don't even tell us what sort of VPN - IPSEC, OpenVPN, PPTP etc.

CHeers
Jon
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