Port 8901JMB-CDS 2
Port for JMB-CDS 2 service traffic over TCP or UDP.
- 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 4,488 · top 22%
Technical Details
what runs on :8901JMB-CDS 2 is registered on port :8901 over tcp and udp to Curtis Bray. 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 found open rarely. What's listening is often not the registered service, so check before you assume.
find what's listening on :8901
# linux
sudo ss -tulpn 'sport = :8901'
# macos / bsd
sudo lsof -nP -i :8901
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :8901nmap -sV -p T:8901 <host>
sudo nmap -sU -sV -p U:8901 <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 :8901risk 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 :8901 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :8901, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :8888 | Sun Answerbook & Alt HTTP | TCP | Web Services | caution | 123.9k |
| :8888 | D2GS Admin Console | TCP | Remote Access | caution | 83.7k |
| :8888 | NewsEDGE | TCPUDP | Web Services | caution | 83.3k |
| :8888 | HTTP Alternative Port | TCP | Web Services | caution | 76.5k |
| :8888 | GNUmp3d Streaming HTTP | TCP | Web Services | caution | 76.3k |
| :8888 | Earthland Realms 2 Server | TCP | Gaming | caution | 73.1k |
| :8881 | Atlasz Secure Server | TCP | Web Services | caution | 67.6k |
| :8882 | Atlasz Secure App Server | TCP | Web Services | caution | 66.9k |
risk mix of the 8 listed
- caution100%
0 of 8 encrypted