Today, all enterprises, large and small depend on VoIP to provide voice communication both internally and externally to the company. Most organizations even have dedicated Voice VLANs and/or physical ports to carry VoIP traffic. Hence, it is important to understand VoIP traffic, security concerns and its encryption/decryption for network forensics and Red-Blue teaming purposes. This course does exactly that!
A non-exhaustive list of topics to be covered include:
- VoIP protocol basics
- VoIP traffic analysis
- SIP + RTP
- SIP over TLS + RTP
- SIP + SRTP
- SIP over TLS + SRTP
- VoIP traffic types
- Voicemail
- Two caller
- Conference call
- SIP messaging
- DTMF
- VoIP call decryption
- Challenges and Limitations
- Existing tools
- Custom Wireshark plugin
- VoIP REGISTER message analysis
- Capture and hash extraction
- Cracking the password
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VoIP Home Lab setup
