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RTSP and Proxies
Some environement requires proxies:
Firewalls need to open pinholes for the media
Logging or content filtering of some media content
Many of these cases can accept a trust model where the proxy is trusted. This due to the close association with it, like your companies.
Defined a mechanism for handling multiple TLS hops by either:
have the proxy relay the next hop server certificate to the client and have it approve the certificate.
let the proxy determine which certificates to accept
accept any certificate (Debugging only)

PPT Version