Port 16991INTEL-RCI-MP
An obscure IANA assignment named INTEL-RCI-MP; no common public-facing service is documented on TCP or UDP port 16991.
- transport
- tcp · udp
- in transit
- cleartext
- assignment
- official
- risk
- 1/10
- lookups
- 0
2 transports registered
payload readable on path
registered with iana
safe
rank 993 of 6,343 · top 16%
Technical Details
what runs on :16991INTEL-RCI-MP is registered on port :16991 over tcp and udp to Jane Dashevsky. We don't have a technical write-up for it beyond the IANA registry entry.
In nmap's internet-wide scan data this port is never observed open, so if it's open on your network it's more likely a custom or misconfigured service than the registered one.
find what's listening on :16991
# linux
sudo ss -tulpn 'sport = :16991'
# macos / bsd
sudo lsof -nP -i :16991
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :16991nmap -sV -p T:16991 <host>
sudo nmap -sU -sV -p U:16991 <host>run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.
add technical detailsSecurity Information
exposure of :16991risk score
1/ 10safe
routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
official
registered with iana for this service — scanners fingerprint it by number
reachable over
tcp · udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
no security notes recorded for :16991 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :16991, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :16992 | Intel AMT SOAP/HTTP | TCPUDP | Remote Access | risk | 0 |
| :16993 | Intel Active Management Technology (AMT) HTTPS | TCPUDPtls | Remote Access | risk | 0 |
| :16950 | Simple Generic Client Interface Protocol | TCPUDP | — | safe | 0 |
| :16994 | Intel AMT Redirection | TCPUDP | Remote Access | risk | 0 |
| :16995 | Intel AMT Redirection over TLS | TCPUDPtls | Remote Access | risk | 0 |
risk mix of the 5 listed
- safe20%
- risk80%
2 of 5 encrypted