January 2016
Intermediate to advanced
384 pages
8h 6m
English
book
Building Telephony Systems with OpenSIPS - Second Edition
by Flavio E. Goncalves, Flavio E Goncalves, Bogdan-Andrei Iancu
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Managing permissions and IP authentication
There are scenarios where you will be required to authenticate by the source IP and not by username and password. Some gateways are not capable to authenticate. In some cases, you can choose to alleviate the burden of the additional messages required for challenge authentication. An example of this case is when you are serving a call center sending more than fifty calls per second. The challenge authentication is bypassed using the check_source_address() function as seen in the previous chapter. Pay attention that UDP is not connection-oriented as TCP; thus, it is susceptible to IP spoofing. If someone sends a request with a spoofed IP authorized in the address table, a 200 OK reply will be sent and the ...
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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.