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// Other services

Port 3417: ConServR file translation

Port 3417 is assigned by IANA to csvr (ConServR file translation).

3417

How csvr works

Other services
client:3417csvrresponse client:3417csvrresponse

The client sends a request to port 3417 and the csvr 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 3417 dangerous?

We have no specific security note for port 3417. 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 3417

ServicePortTransportDescriptionReferenceUpdated
csvr 3417 TCP, UDP ConServR file translation - 2002-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 3417, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3417'      # process listening on 3417
sudo lsof -nP -i :3417

macOS

sudo lsof -nP -i :3417

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3417 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3417
netstat -ano | findstr :3417

From another machine

nmap -p 3417 -sV <host>
sudo nmap -sU -p 3417 <host>
nc -zv <host> 3417

Block it in the firewall

sudo ufw deny 3417/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3417" -Direction Inbound -LocalPort 3417 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3417 used for?

Port 3417 is assigned by IANA to csvr (ConServR file translation).

Is port 3417 TCP or UDP?

Port 3417 is registered for TCP and UDP.

Is it safe to open port 3417?

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 3417 is open?

On Linux run "ss -ltnup 'sport = :3417'", on macOS "lsof -nP -i :3417", and on Windows "netstat -ano | findstr :3417" to see the local process. From another machine, "nmap -p 3417 <host>" shows whether it is reachable.

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