CyberHunter
Local dataset, no network
// Other services

Port 374: Legent Corporation

Port 374 is assigned by IANA to legent-2 (Legent Corporation).

374

How legent-2 works

Other services
client:374legent-2response client:374legent-2response

The client sends a request to port 374 and the legent-2 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 374 dangerous?

We have no specific security note for port 374. 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 374

ServicePortTransportDescriptionReferenceUpdated
legent-2 374 TCP, UDP Legent Corporation - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 374, and is it reachable?

Linux

sudo ss -ltnup 'sport = :374'      # process listening on 374
sudo lsof -nP -i :374

macOS

sudo lsof -nP -i :374

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 374 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 374
netstat -ano | findstr :374

From another machine

nmap -p 374 -sV <host>
sudo nmap -sU -p 374 <host>
nc -zv <host> 374

Block it in the firewall

sudo ufw deny 374/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 374" -Direction Inbound -LocalPort 374 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 374 used for?

Port 374 is assigned by IANA to legent-2 (Legent Corporation).

Is port 374 TCP or UDP?

Port 374 is registered for TCP and UDP.

Is it safe to open port 374?

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 374 is open?

On Linux run "ss -ltnup 'sport = :374'", on macOS "lsof -nP -i :374", and on Windows "netstat -ano | findstr :374" to see the local process. From another machine, "nmap -p 374 <host>" shows whether it is reachable.

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