[VoiceOps] Lync, VPN and DNS?

Ray Van Dolson rvandolson at esri.com
Tue Feb 3 01:00:08 EST 2015

We have a corporate Lync environment with a large # of users hitting it
via their VPN tunnels.  We've set up routing on the VPN client side to
allow VOIP traffic to be routed over the public network rather than
through the tunnel -- if we can just get the DNS lookups to return the
public IP's instead of the internal IP's.

We run BIND and I'm struggling to see a solution short of creating a
special view or separate BIND server just for VPN clients in which I
need to create many zone files to override the relevant Lync DNS
records (one zone per record since unfortunately all of our
Lync-related records live within our primary domain).

Seems ugly and error prone.  Maybe BIND's RPZ could help?  Or maybe
there's some simpler solution I'm missing.

We also have F5 w/ GTM -- maybe some magic could be done there.

Any thoughts/advice?


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