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// Other services

Port 3350: FINDVIATV

Port 3350 is assigned by IANA to findviatv (FINDVIATV).

3350

How findviatv works

Other services
client:3350findviatvresponse client:3350findviatvresponse

The client sends a request to port 3350 and the findviatv 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 3350 dangerous?

We have no specific security note for port 3350. 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 3350

ServicePortTransportDescriptionReferenceUpdated
findviatv 3350 TCP, UDP FINDVIATV - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3350, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3350'      # process listening on 3350
sudo lsof -nP -i :3350

macOS

sudo lsof -nP -i :3350

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3350 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3350
netstat -ano | findstr :3350

From another machine

nmap -p 3350 -sV <host>
sudo nmap -sU -p 3350 <host>
nc -zv <host> 3350

Block it in the firewall

sudo ufw deny 3350/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3350" -Direction Inbound -LocalPort 3350 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3350 used for?

Port 3350 is assigned by IANA to findviatv (FINDVIATV).

Is port 3350 TCP or UDP?

Port 3350 is registered for TCP and UDP.

Is it safe to open port 3350?

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 3350 is open?

On Linux run "ss -ltnup 'sport = :3350'", on macOS "lsof -nP -i :3350", and on Windows "netstat -ano | findstr :3350" to see the local process. From another machine, "nmap -p 3350 <host>" shows whether it is reachable.

05 Related
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