CyberHunter
Local dataset, no network
// Other services

Port 562: chcmd

Port 562 is assigned by IANA to chshell (chcmd).

562

How chshell works

Other services
client:562chshellresponse client:562chshellresponse

The client sends a request to port 562 and the chshell 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 562 dangerous?

We have no specific security note for port 562. 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 562

ServicePortTransportDescriptionReferenceUpdated
chshell 562 TCP, UDP chcmd - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 562, and is it reachable?

Linux

sudo ss -ltnup 'sport = :562'      # process listening on 562
sudo lsof -nP -i :562

macOS

sudo lsof -nP -i :562

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 562 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 562
netstat -ano | findstr :562

From another machine

nmap -p 562 -sV <host>
sudo nmap -sU -p 562 <host>
nc -zv <host> 562

Block it in the firewall

sudo ufw deny 562/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 562" -Direction Inbound -LocalPort 562 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 562 used for?

Port 562 is assigned by IANA to chshell (chcmd).

Is port 562 TCP or UDP?

Port 562 is registered for TCP and UDP.

Is it safe to open port 562?

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 562 is open?

On Linux run "ss -ltnup 'sport = :562'", on macOS "lsof -nP -i :562", and on Windows "netstat -ano | findstr :562" to see the local process. From another machine, "nmap -p 562 <host>" shows whether it is reachable.

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