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// Other services

Port 1367: DCS

Port 1367 is assigned by IANA to dcs (DCS).

1367

How dcs works

Other services
client:1367dcsresponse client:1367dcsresponse

The client sends a request to port 1367 and the dcs 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 1367 dangerous?

We have no specific security note for port 1367. 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 1367

ServicePortTransportDescriptionReferenceUpdated
dcs 1367 TCP, UDP DCS - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1367, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1367'      # process listening on 1367
sudo lsof -nP -i :1367

macOS

sudo lsof -nP -i :1367

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1367 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1367
netstat -ano | findstr :1367

From another machine

nmap -p 1367 -sV <host>
sudo nmap -sU -p 1367 <host>
nc -zv <host> 1367

Block it in the firewall

sudo ufw deny 1367/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1367" -Direction Inbound -LocalPort 1367 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1367 used for?

Port 1367 is assigned by IANA to dcs (DCS).

Is port 1367 TCP or UDP?

Port 1367 is registered for TCP and UDP.

Is it safe to open port 1367?

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 1367 is open?

On Linux run "ss -ltnup 'sport = :1367'", on macOS "lsof -nP -i :1367", and on Windows "netstat -ano | findstr :1367" to see the local process. From another machine, "nmap -p 1367 <host>" shows whether it is reachable.

05 Related
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