Historically RealServer's alternate RTSP port; today most often Openfire's unencrypted BOSH and WebSocket endpoint.
IANA registers 7070 as arcp, a name with no public specification behind it; Nmap labels the port realserver because RealNetworks' RealServer used it as an alternate RTSP listener, and it is one of the more frequently open ports in that range. The current common occupant is Openfire, the XMPP server, whose install guide names 7070 as the unencrypted HTTP-bind (BOSH) and WebSocket port and 7443 as its TLS equivalent, with the explicit recommendation to use only 7443. So a live 7070 is usually a chat server offering a plaintext web-client transport.
Do not expose
Openfire's own documentation recommends encrypted connections on 7443 only — 7070 carries XMPP authentication and messages in cleartext HTTP.
$ curl -sI http://TARGET:7070/http-bind/Seen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
Get Beige Box →also available as JSON · Markdown
Corrections or a missing port? Reply @rimrocksystems.