- Close the port if nothing on the host needs it.
- Identify the process that listens on it (commands below) before opening it in a firewall.
- Expose a service only to the networks that use it.
Port 141: EMFIS Control Service
Port 141 is assigned by IANA to emfis-cntl (EMFIS Control Service).
141
How emfis-cntl works
Other servicesThe client sends a request to port 141 and the emfis-cntl service answers.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Well-known (0-1023)
- Category
- Other services
Is port 141 dangerous?
We have no specific security note for port 141. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 141
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| emfis-cntl | 141 | TCP, UDP | EMFIS Control Service | - | - |
// source: IANA service name and port number registry
Which program uses port 141, and is it reachable?
Linux
sudo ss -ltnup 'sport = :141' # process listening on 141
sudo lsof -nP -i :141macOS
sudo lsof -nP -i :141
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 141 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 141 netstat -ano | findstr :141
From another machine
nmap -p 141 -sV <host> sudo nmap -sU -p 141 <host> nc -zv <host> 141
Block it in the firewall
sudo ufw deny 141/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 141" -Direction Inbound -LocalPort 141 -Protocol TCP -Action Block # Windows
What is port 141 used for?
Port 141 is assigned by IANA to emfis-cntl (EMFIS Control Service).
Is port 141 TCP or UDP?
Port 141 is registered for TCP and UDP.
Is it safe to open port 141?
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. Close the port if nothing on the host needs it.
How do I check if port 141 is open?
On Linux run "ss -ltnup 'sport = :141'", on macOS "lsof -nP -i :141", and on Windows "netstat -ano | findstr :141" to see the local process. From another machine, "nmap -p 141 <host>" shows whether it is reachable.
Other other services ports
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