[asterisk-users] Calls over VPN

[Rich Adamson]

Joseph 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.
> 

vpn's work just fine as long as the vpn end-points have enough 
horsepower to encrypt/decrypt packets without delay.

As one example only, some of the older cisco routers didn't have enough 
horsepower to sustain any significant amounts of vpn traffic without 
installing an optional vpn hardware card. I'd have to guess this might 
also be true with some inexpensive boxes like Linksys as well.