CyberHunter
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// Other services

Port 2358: Futrix

Port 2358 is assigned by IANA to futrix (Futrix).

2358

How futrix works

Other services
client:2358futrixresponse client:2358futrixresponse

The client sends a request to port 2358 and the futrix 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 2358 dangerous?

We have no specific security note for port 2358. 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 2358

ServicePortTransportDescriptionReferenceUpdated
futrix 2358 TCP, UDP Futrix - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2358, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2358'      # process listening on 2358
sudo lsof -nP -i :2358

macOS

sudo lsof -nP -i :2358

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2358 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2358
netstat -ano | findstr :2358

From another machine

nmap -p 2358 -sV <host>
sudo nmap -sU -p 2358 <host>
nc -zv <host> 2358

Block it in the firewall

sudo ufw deny 2358/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2358" -Direction Inbound -LocalPort 2358 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2358 used for?

Port 2358 is assigned by IANA to futrix (Futrix).

Is port 2358 TCP or UDP?

Port 2358 is registered for TCP and UDP.

Is it safe to open port 2358?

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 2358 is open?

On Linux run "ss -ltnup 'sport = :2358'", on macOS "lsof -nP -i :2358", and on Windows "netstat -ano | findstr :2358" to see the local process. From another machine, "nmap -p 2358 <host>" shows whether it is reachable.

05 Related
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