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// Other services

Port 7511: pafec-lm

Port 7511 is assigned by IANA to pafec-lm (pafec-lm).

7511

How pafec-lm works

Other services
client:7511pafec-lmresponse client:7511pafec-lmresponse

The client sends a request to port 7511 and the pafec-lm 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 7511 dangerous?

We have no specific security note for port 7511. 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 7511

ServicePortTransportDescriptionReferenceUpdated
pafec-lm 7511 TCP, UDP pafec-lm - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 7511, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7511'      # process listening on 7511
sudo lsof -nP -i :7511

macOS

sudo lsof -nP -i :7511

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7511 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7511
netstat -ano | findstr :7511

From another machine

nmap -p 7511 -sV <host>
sudo nmap -sU -p 7511 <host>
nc -zv <host> 7511

Block it in the firewall

sudo ufw deny 7511/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7511" -Direction Inbound -LocalPort 7511 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7511 used for?

Port 7511 is assigned by IANA to pafec-lm (pafec-lm).

Is port 7511 TCP or UDP?

Port 7511 is registered for TCP and UDP.

Is it safe to open port 7511?

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 7511 is open?

On Linux run "ss -ltnup 'sport = :7511'", on macOS "lsof -nP -i :7511", and on Windows "netstat -ano | findstr :7511" to see the local process. From another machine, "nmap -p 7511 <host>" shows whether it is reachable.

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