Insights
Field notes on VoIP security, virtualization, cloud migration and infrastructure operations.
September 17, 2026
Signalling ports SIP signalling carries registration and call setup. Encrypted signalling on TLS is the default we deploy; plain UDP signalling is restricted to carrier address ranges only.…
September 8, 2026
Eliminate single points of failure deliberately Redundancy is only useful where the failure would actually hurt, and only real if it has been tested. A second power supply…
September 8, 2026
Start with an inventory you actually trust Before choosing a target platform, establish what is running, what it talks to, and who depends on it. Server lists are…
September 8, 2026
1. Reduce exposure before anything else A SIP port open to the entire internet will be scanned within hours of going live. The first control is not a…
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