The scan report told me to report an unknown service running on port 5555 in the forum and paste some output.
It is our backup software called (back then) HP Data Protector. The product has then been acquired by Micro Focus. We switched to another product several years ago and will remove the service from this host it was found on. I don’t
Method: get_httpHex
0x00: 48 00 50 00 20 00 44 00 61 00 74 00 61 00 20 00 H.P. .D.a.t.a. .
0x10: 50 00 72 00 6F 00 74 00 65 00 63 00 74 00 6F 00 P.r.o.t.e.c.t.o.
0x20: 72 00 20 00 41 00 2E 00 30 00 39 00 2E 00 30 00 r. .A…0.9…0.
0x30: 30 00 3A 00 20 00 49 00 4E 00 45 00 54 00 2C 00 0.:. .I.N.E.T.,.
0x40: 20 00 69 00 6E 00 74 00 65 00 72 00 6E 00 61 00 .i.n.t.e.r.n.a.
0x50: 6C 00 20 00 62 00 75 00 69 00 6C 00 64 00 20 00 l. .b.u.i.l.d. .
0x60: 31 00 30 00 31 00 2C 00 20 00 62 00 75 00 69 00 1.0.1.,. .b.u.i.
0x70: 6C 00 74 00 20 00 6F 00 6E 00 20 00 32 00 37 00 l.t. .o.n. .2.7.
0x80: 20 00 4F 00 63 00 74 00 6F 00 62 00 65 00 72 00 .O.c.t.o.b.e.r.
0x90: 20 00 32 00 30 00 31 00 34 00 2C 00 20 00 31 00 .2.0.1.4.,. .1.
0xA0: 33 00 3A 00 32 00 34 00 0A 00 00 00 3.:.2.4…
Nmap service detection (unknown) result for this port: omniinet
There are some vulnerabilities if you google the name.