- 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.
Port 510: FirstClass Protocol
Port 510 is assigned by IANA to fcp (FirstClass Protocol).
510
How fcp works
Other servicesThe client sends a request to port 510 and the fcp 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
Is port 510 dangerous?
We have no specific security note for port 510. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 510
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| fcp | 510 | TCP, UDP | FirstClass Protocol | - | - |
// source: IANA service name and port number registry
Which program uses port 510, and is it reachable?
Linux
sudo ss -ltnup 'sport = :510' # process listening on 510
sudo lsof -nP -i :510macOS
sudo lsof -nP -i :510
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 510 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 510 netstat -ano | findstr :510
From another machine
nmap -p 510 -sV <host> sudo nmap -sU -p 510 <host> nc -zv <host> 510
Block it in the firewall
sudo ufw deny 510/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 510" -Direction Inbound -LocalPort 510 -Protocol TCP -Action Block # Windows
What is port 510 used for?
Port 510 is assigned by IANA to fcp (FirstClass Protocol).
Is port 510 TCP or UDP?
Port 510 is registered for TCP and UDP.
Is it safe to open port 510?
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 510 is open?
On Linux run "ss -ltnup 'sport = :510'", on macOS "lsof -nP -i :510", and on Windows "netstat -ano | findstr :510" to see the local process. From another machine, "nmap -p 510 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp