Port 8501CYTEL Message Transfer Audio and Video
UDP port assigned to CYTEL Message Transfer Audio and Video; no common public deployment is documented.
- transport
- udp
- in transit
- cleartext
- assignment
- official
- risk
- 1/10
- lookups
- 0
single transport
payload readable on path
registered with iana
safe
rank 993 of 6,053 · top 16%
also known as cmtp-av
2 other services are registered on port 8501. compare all 3 →
Technical Details
what runs on :8501CYTEL Message Transfer Audio and Video is registered on port :8501 over udp to Frank Jakel, assigned April 2011. 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 :8501
# linux
sudo ss -ulpn 'sport = :8501'
# macos / bsd
sudo lsof -nP -i :8501
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :8501sudo nmap -sU -sV -p U:8501 <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 :8501risk score
1/ 10safe
routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.
media averages 2.2 across 137 ports — this one sits 1.2 below.
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
udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
no security notes recorded for :8501 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
the 8 most looked-up other ports in media — 137 ports carry that label.
| port | service | risk | |||
|---|---|---|---|---|---|
| :8888 | GNUmp3d Streaming HTTP | TCP | Web Services | caution | 76.3k |
| :8000 | Alternate HTTP / SHOUTcast | TCP | Web Services | caution | 45.0k |
| :8880 | CDDB Protocol Alternate | UDP | Network Services | caution | 29.5k |
| :6005 | Camfrog Chat | TCP | Voice and Chat | caution | 25.2k |
| :8880 | Windows Media SOAP Connector | TCP | Streaming | caution | 24.3k |
| :8081 | HTTP Alternate Port | TCP | Web Services | caution | 23.3k |
| :5001 | Slingbox | TCP | Streaming | caution | 22.4k |
| :19302 | Google Talk Voice & Video | UDP | Network Services | caution | 19.3k |
risk mix of the 8 listed
- caution100%
0 of 8 encrypted