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I want to have a secured call over internet between two android phones. I have found SipDroid which is an open source SIP client for Android. And also I have followed this to install Asterisk, Dahdi and LibPre on my Ubuntu 10.04.

I want to have it configured it for Local Lan first, although it is intended to work in the 3G Network .


What I want to know is:

  1. Am I moving in the right direction.
  2. Some link which might explain me the components I need to achieve what I want.
  3. I want to know which server (APACHE/MySQL) I might install to have the asterisk up on my localhost so that the two calling phones can give its IP Address as a server and some link educating about its installation procedure.

Thanks in advance for your consideration.

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closed as off-topic by Rory Alsop Dec 14 '15 at 9:43

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question does not appear to be about Information security within the scope defined in the help center." – Rory Alsop
If this question can be reworded to fit the rules in the help center, please edit the question.

    
What are you trying to accomplish? What is it you are trying to protect yourself against? Are you planning on offering a service? – GdD Sep 26 '13 at 13:03
    
I want to have a secured call over internet between two android phones. I am trying to encrypt my calls and also the user ip addresses which might be exposed in SIP without TLS. And its really not clear who might try to intercept the channel to sneak on the call. And yes I am trying to build a service for some specific client. – Harsh Vardhan Sep 26 '13 at 13:21