10055-10057 are actually used by jj2 server lists so the are sometimes unnecessarily included in the list - doesn't really make a difference but you don't need to open them unless you run a list server.

10052 TCP and UDP - used by JJ2 for all ingame communication
10053 - binary list server information, jj2 itself checks the list servers on this information
10054 (don't remember if both TCP and UDP are required) - gets you hosted on the list servers when hosting

10055 - used by the server lists to send statistics on the list server itself
10056 - used by the server lists to sync with each other (correct me if wrong)
10057 - ASCII server list output. Generally (but there are other ways) this is used to get join links from php scripts etc.