July 2017
Intermediate to advanced
434 pages
12h 59m
English
Content preview from FreeSWITCH 1.8
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Protecting signaling
SIP signaling contains both authentication information your phone utilizes to make and receive calls and includes the Caller ID Name and Number of the caller and callee, by default in plain text. This is easy to sniff and to spoof. Encryption makes that harder. In addition, if you are using SRTP (Secure RTP), the SIP signaling contains the cryptography key used to keep your audio secure. Someone who observed this key in plain-text would easily be able to defeat the media encryption utilized.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.