CyberHunter
Local dataset, no network
// Other services

Port 3488: FS Remote Host Server

Port 3488 is assigned by IANA to fs-rh-srv (FS Remote Host Server).

3488

How fs-rh-srv works

Other services
client:3488fs-rh-srvresponse client:3488fs-rh-srvresponse

The client sends a request to port 3488 and the fs-rh-srv 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 3488 dangerous?

We have no specific security note for port 3488. 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 3488

ServicePortTransportDescriptionReferenceUpdated
fs-rh-srv 3488 TCP, UDP FS Remote Host Server - 2002-05

// source: IANA service name and port number registry

03 Check it

Which program uses port 3488, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3488'      # process listening on 3488
sudo lsof -nP -i :3488

macOS

sudo lsof -nP -i :3488

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3488 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3488
netstat -ano | findstr :3488

From another machine

nmap -p 3488 -sV <host>
sudo nmap -sU -p 3488 <host>
nc -zv <host> 3488

Block it in the firewall

sudo ufw deny 3488/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3488" -Direction Inbound -LocalPort 3488 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3488 used for?

Port 3488 is assigned by IANA to fs-rh-srv (FS Remote Host Server).

Is port 3488 TCP or UDP?

Port 3488 is registered for TCP and UDP.

Is it safe to open port 3488?

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 3488 is open?

On Linux run "ss -ltnup 'sport = :3488'", on macOS "lsof -nP -i :3488", and on Windows "netstat -ano | findstr :3488" to see the local process. From another machine, "nmap -p 3488 <host>" shows whether it is reachable.

05 Related
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