[asterisk-users] asterisk and encryption

[Gareth Blades]

On 02/09/13 08:17, gpxctawjc5oh at irational.org wrote:
> i am running Asterisk 1.6.2.5-0ubuntu1.4
> and would like to know how to incorporate [default] encryption
>
> can you point me to any guides please ?
>
> do i need to upgrade ?
>
> many thanks
>
There are two things :-

SIP TLS so that the invites are encrypted. This will enable you to 
encrypt the information about what numbers are being called etc...
https://wiki.asterisk.org/wiki/display/AST/SIP+TLS+Transport

The other is SRTP so that the actual audio is encrypted :-
http://www.voip-info.org/wiki/view/Asterisk+SRTP

SRTP is supported natively in Asterisk 1.8 and later so you should 
definetly upgrade.