CyberHunter
Local dataset, no network
// Other services

Port 1200: SCOL

Port 1200 is assigned by IANA to scol (SCOL).

1200

How scol works

Other services
client:1200scolresponse client:1200scolresponse

The client sends a request to port 1200 and the scol 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 1200 dangerous?

We have no specific security note for port 1200. 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 1200

ServicePortTransportDescriptionReferenceUpdated
scol 1200 TCP, UDP SCOL - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1200, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1200'      # process listening on 1200
sudo lsof -nP -i :1200

macOS

sudo lsof -nP -i :1200

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1200 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1200
netstat -ano | findstr :1200

From another machine

nmap -p 1200 -sV <host>
sudo nmap -sU -p 1200 <host>
nc -zv <host> 1200

Block it in the firewall

sudo ufw deny 1200/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1200" -Direction Inbound -LocalPort 1200 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1200 used for?

Port 1200 is assigned by IANA to scol (SCOL).

Is port 1200 TCP or UDP?

Port 1200 is registered for TCP and UDP.

Is it safe to open port 1200?

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 1200 is open?

On Linux run "ss -ltnup 'sport = :1200'", on macOS "lsof -nP -i :1200", and on Windows "netstat -ano | findstr :1200" to see the local process. From another machine, "nmap -p 1200 <host>" shows whether it is reachable.

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