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// Other services

Port 810: FCP

Port 810 is assigned by IANA to fcp-udp (FCP).

810

How fcp-udp works

Other services
client:810fcp-udpresponse client:810fcp-udpresponse

The client sends a request to port 810 and the fcp-udp 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 810 dangerous?

We have no specific security note for port 810. 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 810

ServicePortTransportDescriptionReferenceUpdated
fcp-udp 810 TCP, UDP FCP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 810, and is it reachable?

Linux

sudo ss -ltnup 'sport = :810'      # process listening on 810
sudo lsof -nP -i :810

macOS

sudo lsof -nP -i :810

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 810 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 810
netstat -ano | findstr :810

From another machine

nmap -p 810 -sV <host>
sudo nmap -sU -p 810 <host>
nc -zv <host> 810

Block it in the firewall

sudo ufw deny 810/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 810" -Direction Inbound -LocalPort 810 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 810 used for?

Port 810 is assigned by IANA to fcp-udp (FCP).

Is port 810 TCP or UDP?

Port 810 is registered for TCP and UDP.

Is it safe to open port 810?

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 810 is open?

On Linux run "ss -ltnup 'sport = :810'", on macOS "lsof -nP -i :810", and on Windows "netstat -ano | findstr :810" to see the local process. From another machine, "nmap -p 810 <host>" shows whether it is reachable.

05 Related
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