[asterisk-users] Calls over VPN

[Armin Schindler]

Yes, I agree. And one more thing: With some encrypt setups of openvpn the
data path is 'on hold' when openvpn recreates/renegotiates a new encryption.
This means that you have a short interrupt (some milliseconds) when openvpn 
server 
a) establishes a new connection
b) re-creates the encrypt-key (e.g. once per hour)

To avoid a) I setup one openvpn server instance for each (important) VPN 
connection.
To reduce b) I increased the reneg cycle.

Armin

On Wed, 23 Aug 2006, Simon Woodhead wrote:
> We've done this with OpenVPN and it works fine. I'd recommend that the VPN
> server is not on the same box as Asterisk. Stick it on a firewall/gateway
> box giving access to the network containing the Asterisk boxes behind it.
> This way the Asterisk box(es) is seeing normal unencrypted traffic and the
> VPN server(s) can be specified to meet the VPN requirement.
> 
> On 8/23/06, Joseph <syscon at interbaun.com> wrote:
> > 
> > Is anybody making calls over VPN?  If so what is the "penalty" as
> > encryption is involved.
> > I was planning to use VPN to register Sipura units to my local asterisk
> > this way I don't have to deal with NAT issues.
> > 
> > --
> > #Joseph
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