TLS, and ports that are not universal

TLS, and ports that are not universal · Worked example

Label the rule

Write one firewall line for TLS and one for Studio, and refuse to merge them.

TLS 1.2

Studio ports marked Studio

A note that the trunk guide is separate

The two rules have different names.

TLS floor? 1.2.

TLS 1.1? Not supported.

Studio 5060 on every trunk? No.

5061 caveat? Beta in that PDF.

Sources and go deeper

Technical requirements PDF. vendor. last checked 2026-10. Fetched for this lab in October 2026. Re-read before you buy hardware or open a firewall.
SIP trunk options chapter. vendor. last checked 2026-10.
IANA service names and port numbers. ports. last checked 2026-10.
RFC 3261, SIP: Session Initiation Protocol. rfc. last checked 2026-10.
RFC 3550, RTP. rfc. last checked 2026-10.
RFC 3551, RTP profile for audio and video. rfc. last checked 2026-10.
ITU-T G.711. standard. last checked 2026-10.
RFC 8446, TLS 1.3. rfc. last checked 2026-10.
RFC 9293, Transmission Control Protocol. rfc. last checked 2026-10.
RFC 768, User Datagram Protocol. rfc. last checked 2026-10.
confirm. Studio TCP 5061 is described as beta in the PDF read for this lab. Confirm before you depend on it. last checked 2026-10.