Port 22005Opto Host Port 5
An obscure Opto Host Port 5 assignment; no common public service or observed open use is known.
- 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 6,422 · top 15%
also known as optohost004
Technical Details
what runs on :22005Opto Host Port 5 is registered on port :22005 over tcp and udp to Doug Leany, assigned September 2006. 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 :22005
# linux
sudo ss -tulpn 'sport = :22005'
# macos / bsd
sudo lsof -nP -i :22005
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :22005nmap -sV -p T:22005 <host>
sudo nmap -sU -sV -p U:22005 <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 :22005risk 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 :22005 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :22005, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :22000 | Syncthing | TCPUDPtls | File Transfer | caution | 0 |
| :22001 | OptoControl | TCPUDP | — | safe | 0 |
| :22002 | Opto Host Port 2 | TCPUDP | — | safe | 0 |
| :22003 | Opto Host Port 3 | TCPUDP | — | safe | 0 |
| :22004 | Opto Host Port 4 | TCPUDP | — | safe | 0 |
risk mix of the 5 listed
- safe80%
- caution20%
1 of 5 encrypted