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// Other services

Port 4401: ASIGRA Televaulting DS-System Service

Port 4401 is assigned by IANA to ds-srvr (ASIGRA Televaulting DS-System Service).

4401

How ds-srvr works

Other services
client:4401ds-srvrresponse client:4401ds-srvrresponse

The client sends a request to port 4401 and the ds-srvr 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 4401 dangerous?

We have no specific security note for port 4401. 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 4401

ServicePortTransportDescriptionReferenceUpdated
ds-srvr 4401 TCP, UDP ASIGRA Televaulting DS-System Service - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4401, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4401'      # process listening on 4401
sudo lsof -nP -i :4401

macOS

sudo lsof -nP -i :4401

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4401 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4401
netstat -ano | findstr :4401

From another machine

nmap -p 4401 -sV <host>
sudo nmap -sU -p 4401 <host>
nc -zv <host> 4401

Block it in the firewall

sudo ufw deny 4401/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4401" -Direction Inbound -LocalPort 4401 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4401 used for?

Port 4401 is assigned by IANA to ds-srvr (ASIGRA Televaulting DS-System Service).

Is port 4401 TCP or UDP?

Port 4401 is registered for TCP and UDP.

Is it safe to open port 4401?

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 4401 is open?

On Linux run "ss -ltnup 'sport = :4401'", on macOS "lsof -nP -i :4401", and on Windows "netstat -ano | findstr :4401" to see the local process. From another machine, "nmap -p 4401 <host>" shows whether it is reachable.

05 Related
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