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// Other services

Port 5426: DEVBASIC

Port 5426 is assigned by IANA to devbasic (DEVBASIC).

5426

How devbasic works

Other services
client:5426devbasicresponse client:5426devbasicresponse

The client sends a request to port 5426 and the devbasic 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 5426 dangerous?

We have no specific security note for port 5426. 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 5426

ServicePortTransportDescriptionReferenceUpdated
devbasic 5426 TCP, UDP DEVBASIC - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5426, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5426'      # process listening on 5426
sudo lsof -nP -i :5426

macOS

sudo lsof -nP -i :5426

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5426 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5426
netstat -ano | findstr :5426

From another machine

nmap -p 5426 -sV <host>
sudo nmap -sU -p 5426 <host>
nc -zv <host> 5426

Block it in the firewall

sudo ufw deny 5426/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5426" -Direction Inbound -LocalPort 5426 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5426 used for?

Port 5426 is assigned by IANA to devbasic (DEVBASIC).

Is port 5426 TCP or UDP?

Port 5426 is registered for TCP and UDP.

Is it safe to open port 5426?

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 5426 is open?

On Linux run "ss -ltnup 'sport = :5426'", on macOS "lsof -nP -i :5426", and on Windows "netstat -ano | findstr :5426" to see the local process. From another machine, "nmap -p 5426 <host>" shows whether it is reachable.

05 Related
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