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// Other services

Port 1913: armadp

Port 1913 is assigned by IANA to armadp (armadp).

1913

How armadp works

Other services
client:1913armadpresponse client:1913armadpresponse

The client sends a request to port 1913 and the armadp 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 1913 dangerous?

We have no specific security note for port 1913. 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 1913

ServicePortTransportDescriptionReferenceUpdated
armadp 1913 TCP, UDP armadp - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1913, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1913'      # process listening on 1913
sudo lsof -nP -i :1913

macOS

sudo lsof -nP -i :1913

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1913 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1913
netstat -ano | findstr :1913

From another machine

nmap -p 1913 -sV <host>
sudo nmap -sU -p 1913 <host>
nc -zv <host> 1913

Block it in the firewall

sudo ufw deny 1913/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1913" -Direction Inbound -LocalPort 1913 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1913 used for?

Port 1913 is assigned by IANA to armadp (armadp).

Is port 1913 TCP or UDP?

Port 1913 is registered for TCP and UDP.

Is it safe to open port 1913?

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 1913 is open?

On Linux run "ss -ltnup 'sport = :1913'", on macOS "lsof -nP -i :1913", and on Windows "netstat -ano | findstr :1913" to see the local process. From another machine, "nmap -p 1913 <host>" shows whether it is reachable.

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