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// Other services

Port 41795: Crestron Terminal Port

Port 41795 is assigned by IANA to crestron-ctp (Crestron Terminal Port).

41795

How crestron-ctp works

Other services
client:41795crestron-ctpresponse client:41795crestron-ctpresponse

The client sends a request to port 41795 and the crestron-ctp 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 41795 dangerous?

We have no specific security note for port 41795. 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 41795

ServicePortTransportDescriptionReferenceUpdated
crestron-ctp 41795 TCP, UDP Crestron Terminal Port - 2019-10-17

// source: IANA service name and port number registry

03 Check it

Which program uses port 41795, and is it reachable?

Linux

sudo ss -ltnup 'sport = :41795'      # process listening on 41795
sudo lsof -nP -i :41795

macOS

sudo lsof -nP -i :41795

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 41795 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 41795
netstat -ano | findstr :41795

From another machine

nmap -p 41795 -sV <host>
sudo nmap -sU -p 41795 <host>
nc -zv <host> 41795

Block it in the firewall

sudo ufw deny 41795/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 41795" -Direction Inbound -LocalPort 41795 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 41795 used for?

Port 41795 is assigned by IANA to crestron-ctp (Crestron Terminal Port).

Is port 41795 TCP or UDP?

Port 41795 is registered for TCP and UDP.

Is it safe to open port 41795?

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 41795 is open?

On Linux run "ss -ltnup 'sport = :41795'", on macOS "lsof -nP -i :41795", and on Windows "netstat -ano | findstr :41795" to see the local process. From another machine, "nmap -p 41795 <host>" shows whether it is reachable.

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