What ports and protocols do I need to open in order to broadcast?

[liccollege]

There is Internet filtering in our network.
1. Which ports and protocols do I need to open to broadcast?
2. Which external site is being broadcast to (which address should be accessed)?

 

[Lawrence_SoCal]

depends
different stream providers use different protocols and ports.

Your best bet is to look into the stream providers (CDN / content delivery networks) documentation (ex YouTube, Facebook, Twitch, etc)

OBS Studio is a locally run application that can locally record, as well as send stream content to many different CDNs, so there isn't a Easy Button answer to your question

 

[R1CH]

TCP ports 1935 (RTMP) and 443 (RTMPS, HLS) outbound cover 99% of use cases. No ports need to be opened inbound.