Port 3858
trap-port-mom · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | trap-port-mom |
| Registered | 2003-08 |
Frequently asked questions
What is port 3858 used for?
Port 3858 is registered with the IANA for trap-port-mom (TCP/UDP). Description: Trap Port MOM.
Is port 3858 a well-known port?
No. Port 3858 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3858 is open?
Locally on Linux with ss -tulpn | grep ':3858\b', on Windows with netstat -ano | findstr :3858. To test a remote host use Test-NetConnection <host> -Port 3858 in PowerShell or nc -zv <host> 3858 on Linux/macOS.
How do I open port 3858 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3858/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3858/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3858" -Direction Inbound -Protocol TCP -LocalPort 3858 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | trap-port-mom | Trap Port MOM |
| UDP | trap-port-mom | Trap Port MOM |