Port 25903NIProbe
NIProbe is an obscure service assignment with no widely documented protocol or common deployment.
- 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 6,476 · top 15%
Technical Details
what runs on :25903NIProbe is registered on port :25903 over tcp and udp to Roman Oliynyk. 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 :25903
# linux
sudo ss -tulpn 'sport = :25903'
# macos / bsd
sudo lsof -nP -i :25903
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :25903nmap -sV -p T:25903 <host>
sudo nmap -sU -sV -p U:25903 <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 :25903risk 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 :25903 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :25903, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :25888 | Xfire Game Server Tracking | UDP | Gaming | caution | 13.4k |
| :25901 | NIObserver | TCPUDP | — | safe | 0 |
| :25900 | TASP Network Comm | TCPUDP | — | safe | 0 |
| :25902 | NILinkAnalyst | TCPUDP | — | safe | 0 |
| :25954 | Bitfighter game server | UDP | Gaming | safe | 0 |
| :25955 | Bitfighter master server | UDP | Gaming | safe | 0 |
risk mix of the 6 listed
- safe83%
- caution17%
0 of 6 encrypted