Port 18881Infotos
Infotos is an obscure IANA-assigned service; no common implementation or deployment on port 18881 is established.
- 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 6,373 · top 16%
Technical Details
what runs on :18881Infotos is registered on port :18881 over tcp and udp to Marcel Dube, assigned November 2004. 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 :18881
# linux
sudo ss -tulpn 'sport = :18881'
# macos / bsd
sudo lsof -nP -i :18881
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :18881nmap -sV -p T:18881 <host>
sudo nmap -sU -sV -p U:18881 <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 :18881risk 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 :18881 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :18881, by lookups.
risk mix of the 1 listed
- safe100%
0 of 1 encrypted