The HTTPS web console for Dell OpenManage Server Administrator — a server's hardware admin plane.
Dell OpenManage Server Administrator (OMSA) runs an embedded web server on TCP 1311 and serves its console over HTTPS at https://host:1311. Through it an authenticated operator reads hardware health, RAID and firmware state, and performs management actions on a PowerEdge server. The IANA registration for 1311 is the unrelated "RxMon", so on a scan of Dell hardware treat 1311 as OMSA. Its presence marks the host as a physical Dell server with the management agent installed.
Do not expose
This is a hardware administration console with credentials in front of it; OMSA has a history of remotely exploitable CVEs and belongs on a management VLAN, never on the internet.
$ openssl s_client -connect TARGET:1311 -servername TARGET </dev/nullSeen 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.
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