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// Other services

Port 3145: CSI-LFAP

Port 3145 is assigned by IANA to csi-lfap (CSI-LFAP).

3145

How csi-lfap works

Other services
client:3145csi-lfapresponse client:3145csi-lfapresponse

The client sends a request to port 3145 and the csi-lfap 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
Registered (1024-49151)
Category
Other services
01 Security

Is port 3145 dangerous?

We have no specific security note for port 3145. Its risk depends on the program actually listening on it. General advice for other services services:

  • 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.
02 Registry

IANA registry entries for port 3145

ServicePortTransportDescriptionReferenceUpdated
csi-lfap 3145 TCP, UDP CSI-LFAP
Reported: Known UNAUTHORIZED USE: port 3145
 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3145, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3145'      # process listening on 3145
sudo lsof -nP -i :3145

macOS

sudo lsof -nP -i :3145

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3145 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3145
netstat -ano | findstr :3145

From another machine

nmap -p 3145 -sV <host>
sudo nmap -sU -p 3145 <host>
nc -zv <host> 3145

Block it in the firewall

sudo ufw deny 3145/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3145" -Direction Inbound -LocalPort 3145 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3145 used for?

Port 3145 is assigned by IANA to csi-lfap (CSI-LFAP).

Is port 3145 TCP or UDP?

Port 3145 is registered for TCP and UDP.

Is it safe to open port 3145?

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 3145 is open?

On Linux run "ss -ltnup 'sport = :3145'", on macOS "lsof -nP -i :3145", and on Windows "netstat -ano | findstr :3145" to see the local process. From another machine, "nmap -p 3145 <host>" shows whether it is reachable.

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