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// Other services

Port 3669: CA SAN Switch Management

Port 3669 is assigned by IANA to casanswmgmt (CA SAN Switch Management).

3669

How casanswmgmt works

Other services
client:3669casanswmgmtresponse client:3669casanswmgmtresponse

The client sends a request to port 3669 and the casanswmgmt 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 3669 dangerous?

We have no specific security note for port 3669. 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 3669

ServicePortTransportDescriptionReferenceUpdated
casanswmgmt 3669 TCP, UDP CA SAN Switch Management - 2003-01

// source: IANA service name and port number registry

03 Check it

Which program uses port 3669, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3669'      # process listening on 3669
sudo lsof -nP -i :3669

macOS

sudo lsof -nP -i :3669

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3669 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3669
netstat -ano | findstr :3669

From another machine

nmap -p 3669 -sV <host>
sudo nmap -sU -p 3669 <host>
nc -zv <host> 3669

Block it in the firewall

sudo ufw deny 3669/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3669" -Direction Inbound -LocalPort 3669 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3669 used for?

Port 3669 is assigned by IANA to casanswmgmt (CA SAN Switch Management).

Is port 3669 TCP or UDP?

Port 3669 is registered for TCP and UDP.

Is it safe to open port 3669?

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 3669 is open?

On Linux run "ss -ltnup 'sport = :3669'", on macOS "lsof -nP -i :3669", and on Windows "netstat -ano | findstr :3669" to see the local process. From another machine, "nmap -p 3669 <host>" shows whether it is reachable.

05 Related
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