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// Other services

Port 1450: Tandem Distributed Workbench Facility

Port 1450 is assigned by IANA to dwf (Tandem Distributed Workbench Facility).

1450

How dwf works

Other services
client:1450dwfresponse client:1450dwfresponse

The client sends a request to port 1450 and the dwf 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 1450 dangerous?

We have no specific security note for port 1450. 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 1450

ServicePortTransportDescriptionReferenceUpdated
dwf 1450 TCP, UDP Tandem Distributed Workbench Facility - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1450, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1450'      # process listening on 1450
sudo lsof -nP -i :1450

macOS

sudo lsof -nP -i :1450

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1450 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1450
netstat -ano | findstr :1450

From another machine

nmap -p 1450 -sV <host>
sudo nmap -sU -p 1450 <host>
nc -zv <host> 1450

Block it in the firewall

sudo ufw deny 1450/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1450" -Direction Inbound -LocalPort 1450 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1450 used for?

Port 1450 is assigned by IANA to dwf (Tandem Distributed Workbench Facility).

Is port 1450 TCP or UDP?

Port 1450 is registered for TCP and UDP.

Is it safe to open port 1450?

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 1450 is open?

On Linux run "ss -ltnup 'sport = :1450'", on macOS "lsof -nP -i :1450", and on Windows "netstat -ano | findstr :1450" to see the local process. From another machine, "nmap -p 1450 <host>" shows whether it is reachable.

05 Related
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