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// Other services

Port 1420: Timbuktu Service 4 Port

Port 1420 is assigned by IANA to timbuktu-srv4 (Timbuktu Service 4 Port).

1420

How timbuktu-srv4 works

Other services
client:1420timbuktu-srv4response client:1420timbuktu-srv4response

The client sends a request to port 1420 and the timbuktu-srv4 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 1420 dangerous?

We have no specific security note for port 1420. 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 1420

ServicePortTransportDescriptionReferenceUpdated
timbuktu-srv4 1420 TCP, UDP Timbuktu Service 4 Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1420, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1420'      # process listening on 1420
sudo lsof -nP -i :1420

macOS

sudo lsof -nP -i :1420

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1420 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1420
netstat -ano | findstr :1420

From another machine

nmap -p 1420 -sV <host>
sudo nmap -sU -p 1420 <host>
nc -zv <host> 1420

Block it in the firewall

sudo ufw deny 1420/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1420" -Direction Inbound -LocalPort 1420 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1420 used for?

Port 1420 is assigned by IANA to timbuktu-srv4 (Timbuktu Service 4 Port).

Is port 1420 TCP or UDP?

Port 1420 is registered for TCP and UDP.

Is it safe to open port 1420?

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 1420 is open?

On Linux run "ss -ltnup 'sport = :1420'", on macOS "lsof -nP -i :1420", and on Windows "netstat -ano | findstr :1420" to see the local process. From another machine, "nmap -p 1420 <host>" shows whether it is reachable.

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