Open Source VoIP Traffic Monitoring - Luca Deri - Ntop

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Proprietary VoIP Protocols • Cisco Skinny – Signaling protocol, easy to decode and handle. • Asterix – IXP (Inter Asterisk eXchange) Protocol: open protocol. • Skype – Decentralized architecture (P2P). – Ability to call both users and plain phones. – Phone calls are both encrypted and obfuscated. – Totally closed source development model. • What to do then? – Fully support standard VoIP protocols. – Support proprietary protocols as much as possible. ntop.org
PSTN ntop.org Flow-based Monitoring Architecture PC GW GK Probe router router GW GK PC Institution A Probe Probe Probe Institution B Internet Collector (ntop)
Page 1 and 2: ntop.org Open Source VoIP Traffic M
Page 3 and 4: ntop.org Motivation for This Work
Page 5 and 6: ntop.org Approach Being Used • En
Page 7: Standard VoIP Protocols • SIP •
Page 11 and 12: Standard VoIP: Implemented Metrics
Page 13 and 14: ntop.org ntop VoIP Support: SIP/RTP
Page 15 and 16: ntop.org ntop VoIP Support: Skype [
Page 17 and 18: ntop.org Challenges in VoIP Packet
Page 19 and 20: ID Intel Driver ntop.org Dynamic Pa
Page 21 and 22: ntop.org 3Com OSM Router/Switch The

Open Source VoIP Traffic Monitoring - Luca Deri - Ntop

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