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// Other services

Port 1747: ftrapid-2

Port 1747 is assigned by IANA to ftrapid-2 (ftrapid-2).

1747

How ftrapid-2 works

Other services
client:1747ftrapid-2response client:1747ftrapid-2response

The client sends a request to port 1747 and the ftrapid-2 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 1747 dangerous?

We have no specific security note for port 1747. 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 1747

ServicePortTransportDescriptionReferenceUpdated
ftrapid-2 1747 TCP, UDP ftrapid-2 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1747, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1747'      # process listening on 1747
sudo lsof -nP -i :1747

macOS

sudo lsof -nP -i :1747

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1747 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1747
netstat -ano | findstr :1747

From another machine

nmap -p 1747 -sV <host>
sudo nmap -sU -p 1747 <host>
nc -zv <host> 1747

Block it in the firewall

sudo ufw deny 1747/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1747" -Direction Inbound -LocalPort 1747 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1747 used for?

Port 1747 is assigned by IANA to ftrapid-2 (ftrapid-2).

Is port 1747 TCP or UDP?

Port 1747 is registered for TCP and UDP.

Is it safe to open port 1747?

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 1747 is open?

On Linux run "ss -ltnup 'sport = :1747'", on macOS "lsof -nP -i :1747", and on Windows "netstat -ano | findstr :1747" to see the local process. From another machine, "nmap -p 1747 <host>" shows whether it is reachable.

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