433 for those who didn't know (like me) https://en.wikipedia.org/wiki/Network_News_Transfer_Protocol https://en.wikipedia.org/wiki/Network_News_Transfer_Protoc

433 for those who didn't know (like me) https://en.wikipedia.org/wiki/Network_News_Transfer_Protocol https://en.wikipedia.org/wiki/Network_News_Transfer_Protocol > The Network News Transfer Protocol (NNTP) is an application protocol used for transporting Usenet news articles (netnews) between news servers, and for reading/posting articles by the end user client applications. > Well-known TCP port 433 (NNSP) may be used when doing a bulk transfer of articles from one server to another.