CyberHunter
Local dataset, no network
// Other services

Port 2687: pq-lic-mgmt

Port 2687 is assigned by IANA to pq-lic-mgmt (pq-lic-mgmt).

2687

How pq-lic-mgmt works

Other services
client:2687pq-lic-mgmtresponse client:2687pq-lic-mgmtresponse

The client sends a request to port 2687 and the pq-lic-mgmt 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 2687 dangerous?

We have no specific security note for port 2687. 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 2687

ServicePortTransportDescriptionReferenceUpdated
pq-lic-mgmt 2687 TCP, UDP pq-lic-mgmt - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2687, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2687'      # process listening on 2687
sudo lsof -nP -i :2687

macOS

sudo lsof -nP -i :2687

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2687 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2687
netstat -ano | findstr :2687

From another machine

nmap -p 2687 -sV <host>
sudo nmap -sU -p 2687 <host>
nc -zv <host> 2687

Block it in the firewall

sudo ufw deny 2687/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2687" -Direction Inbound -LocalPort 2687 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2687 used for?

Port 2687 is assigned by IANA to pq-lic-mgmt (pq-lic-mgmt).

Is port 2687 TCP or UDP?

Port 2687 is registered for TCP and UDP.

Is it safe to open port 2687?

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 2687 is open?

On Linux run "ss -ltnup 'sport = :2687'", on macOS "lsof -nP -i :2687", and on Windows "netstat -ano | findstr :2687" to see the local process. From another machine, "nmap -p 2687 <host>" shows whether it is reachable.

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