ASN.1 Encoding in a Nutshell
Nick Introduction to Encoding & Decoding data in ASN.1 (Using Python)
January 2019
Kamailio 101 – Part 10 – Recap
Recap of the series
Kamailio 101 – Part 9 – Adding Carrier Links
Adding Trunks to our Kamailio instance to make / receive calls from the PSTN.
Message Amplification & UDP Flooding with SIP
DNS style message amplification using SIP requests to flood a server / host.
All About IMS Authentication (AKAv1-MD5) in VoLTE Networks
How the AKAv1-MD5 algorith derives keys and how it's used in IMS Networks
RTP – More than you wanted to know
Workhorse of VoIP / VoLTE / SIP / H.323 / IMS, we take a deep dive into what every bit of RTP means. Pun very much intended.
Kamailio 101 – Part 8 – Security in Practice
Putting security into practice in Kamailio to authenticate INVITE and REGISTER traffic by source IP and Challenge / Response in the Auth header.
Kamailio 101 – Part 7 – Security in Theory
General overview of AAA, traffic validation and SIP security.