- Restrict management and monitoring protocols to the monitoring network.
- Replace community strings and default credentials.
- Send logs over TLS.
Port 3186: IIW Monitor User Port
Port 3186 is assigned by IANA to iiw-port (IIW Monitor User Port).
3186
How iiw-port works
Monitoring & loggingThe monitoring server collects metrics, alerts or logs from devices over port 3186.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Monitoring & logging
Is port 3186 dangerous?
We have no specific security note for port 3186. Its risk depends on the program actually listening on it. General advice for monitoring & logging services:
IANA registry entries for port 3186
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| iiw-port | 3186 | TCP, UDP | IIW Monitor User Port | - | - |
// source: IANA service name and port number registry
Which program uses port 3186, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3186' # process listening on 3186
sudo lsof -nP -i :3186macOS
sudo lsof -nP -i :3186
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3186 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3186 netstat -ano | findstr :3186
From another machine
nmap -p 3186 -sV <host> sudo nmap -sU -p 3186 <host> nc -zv <host> 3186
Block it in the firewall
sudo ufw deny 3186/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3186" -Direction Inbound -LocalPort 3186 -Protocol TCP -Action Block # Windows
What is port 3186 used for?
Port 3186 is assigned by IANA to iiw-port (IIW Monitor User Port).
Is port 3186 TCP or UDP?
Port 3186 is registered for TCP and UDP.
Is it safe to open port 3186?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Restrict management and monitoring protocols to the monitoring network.
How do I check if port 3186 is open?
On Linux run "ss -ltnup 'sport = :3186'", on macOS "lsof -nP -i :3186", and on Windows "netstat -ano | findstr :3186" to see the local process. From another machine, "nmap -p 3186 <host>" shows whether it is reachable.
Other monitoring & logging ports
:161 SNMP udp · tcp · high risk :162 SNMP trap udp · tcp · moderate risk :9090 Prometheus / admin consoles tcp · udp · high risk :514 Syslog udp · tcp · moderate risk :6514 Syslog over TLS tcp · udp · dccp · low risk :5601 Kibana tcp · udp · high risk :391 SynOptics SNMP Relay Port tcp · udp :412 Trap Convention Port tcp · udp