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// Other services

Port 2620: LPSRecommender

Port 2620 is assigned by IANA to lpsrecommender (LPSRecommender).

2620

How lpsrecommender works

Other services
client:2620lpsrecommenderresponse client:2620lpsrecommenderresponse

The client sends a request to port 2620 and the lpsrecommender 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 2620 dangerous?

We have no specific security note for port 2620. 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 2620

ServicePortTransportDescriptionReferenceUpdated
lpsrecommender 2620 TCP, UDP LPSRecommender - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2620, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2620'      # process listening on 2620
sudo lsof -nP -i :2620

macOS

sudo lsof -nP -i :2620

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2620 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2620
netstat -ano | findstr :2620

From another machine

nmap -p 2620 -sV <host>
sudo nmap -sU -p 2620 <host>
nc -zv <host> 2620

Block it in the firewall

sudo ufw deny 2620/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2620" -Direction Inbound -LocalPort 2620 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2620 used for?

Port 2620 is assigned by IANA to lpsrecommender (LPSRecommender).

Is port 2620 TCP or UDP?

Port 2620 is registered for TCP and UDP.

Is it safe to open port 2620?

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 2620 is open?

On Linux run "ss -ltnup 'sport = :2620'", on macOS "lsof -nP -i :2620", and on Windows "netstat -ano | findstr :2620" to see the local process. From another machine, "nmap -p 2620 <host>" shows whether it is reachable.

05 Related
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