Port 1521nCube License Manager
Port assigned to the nCube License Manager licensing service.
- 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 4,878 · top 20%
also known as ncube-lm
2 other services are registered on port 1521. compare all 3 →
Technical Details
what runs on :1521nCube License Manager is registered on port :1521 over tcp and udp to Maxine Yuen. 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.
IANA has recorded this port being used for something it was not assigned for.
find what's listening on :1521
# linux
sudo ss -tulpn 'sport = :1521'
# macos / bsd
sudo lsof -nP -i :1521
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :1521nmap -sV -p T:1521 <host>
sudo nmap -sU -sV -p U:1521 <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 :1521risk 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 :1521 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :1521, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :1513 | Garena Gaming | TCPUDP | Gaming | caution | 33.1k |
| :1521 | Oracle TNS Listener | TCP | Security | caution | 19.6k |
| :1521 | Oracle DB Listener | TCP | Databases | caution | 18.4k |
| :1533 | IBM Sametime & SQL Server | TCP | Network Services | safe | 13.5k |
| :1526 | Oracle Listener Alt Port | TCP | Databases | caution | 13.0k |
| :1500 | NetGuard GuardianPro Remote Management | TCP | Security | caution | 12.7k |
| :1503 | Live Messenger Whiteboard Sharing | TCPUDP | Network Services | caution | 12.4k |
| :1501 | NetGuard GuardianPro Auth Client | UDP | Security | caution | 12.0k |
risk mix of the 8 listed
- safe13%
- caution88%
0 of 8 encrypted