July 2016
Intermediate to advanced
300 pages
6h 49m
English
Content preview from Mastering FreeSWITCHBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Encrypting SIP with TLS (SIPS)
TLS, as SSL, depends on certificates issued by a Certification Authority that guarantee the identity of the certificate bearer. You can buy a TLS certificate from the same CAs that sell Web HTTPS certificates. You can then use that same certificate with WebSockets, WebRTC and mod_verto too (and for the HTTPS website with the same name as your SIP registrar, for example, https://pbx.freeswitch.org).
Also, you can use free and valid certificates from https://letsencrypt.org/, (see the automatic script in FreeSWITCH Confluence about verto_communicator demo installation on Debian 8).
The tool you use to generate the various certificates involved is (aptly named) gentls_cert:
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