Registered to the Amiga Network Filesystem, but in practice usually Oracle XML DB's FTP listener.
IANA assigns 2100 to the Amiga Network Filesystem, which you will essentially never meet. What actually turns up on this port is Oracle XML DB: Oracle's documentation uses 2100 as the FTP port for reaching the XML DB repository, and older database installs shipped it preconfigured alongside HTTP on 8080. Current releases disable it — the ftp-port setting defaults to 0 — so an open 2100 on a database host means someone turned FTP on. Connect and you get an FTP banner naming Oracle, and logins are database accounts.
Do not expose
If it is Oracle XML DB, this is cleartext FTP authenticating with database credentials straight into the repository. Leave ftp-port at 0 and use HTTPS/WebDAV or a tunnel instead.
$ printf 'QUIT\r\n' | nc -v TARGET 2100Seen 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.