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// Databases & caches

Port 7003: volume location database

Port 7003 is assigned by IANA to afs3-vlserver (volume location database).

7003

How afs3-vlserver works

Databases & caches
app:7003afs3-vlserver app:7003afs3-vlserver

The application sends a SQL query to the afs3-vlserver server on port 7003, which returns rows from its tables.

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
Databases & caches
01 Security

Is port 7003 dangerous?

We have no specific security note for port 7003. Its risk depends on the program actually listening on it. General advice for databases & caches services:

  • Bind the service to localhost or a private network, never to a public address.
  • Enable authentication, use per-application accounts and require TLS.
  • Watch for exposed Docker ports: publish them on 127.0.0.1 only.
02 Registry

IANA registry entries for port 7003

ServicePortTransportDescriptionReferenceUpdated
afs3-vlserver 7003 TCP, UDP volume location database - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 7003, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7003'      # process listening on 7003
sudo lsof -nP -i :7003

macOS

sudo lsof -nP -i :7003

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7003 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7003
netstat -ano | findstr :7003

From another machine

nmap -p 7003 -sV <host>
sudo nmap -sU -p 7003 <host>
nc -zv <host> 7003

Block it in the firewall

sudo ufw deny 7003/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7003" -Direction Inbound -LocalPort 7003 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7003 used for?

Port 7003 is assigned by IANA to afs3-vlserver (volume location database).

Is port 7003 TCP or UDP?

Port 7003 is registered for TCP and UDP.

Is it safe to open port 7003?

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. Bind the service to localhost or a private network, never to a public address.

How do I check if port 7003 is open?

On Linux run "ss -ltnup 'sport = :7003'", on macOS "lsof -nP -i :7003", and on Windows "netstat -ano | findstr :7003" to see the local process. From another machine, "nmap -p 7003 <host>" shows whether it is reachable.

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