CyberHunter
Local dataset, no network
// Other services

Port 378: NEC Corporation

Port 378 is assigned by IANA to dsETOS (NEC Corporation).

378

How dsETOS works

Other services
client:378dsETOSresponse client:378dsETOSresponse

The client sends a request to port 378 and the dsETOS 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 378 dangerous?

We have no specific security note for port 378. 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 378

ServicePortTransportDescriptionReferenceUpdated
dsETOS 378 TCP, UDP NEC Corporation - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 378, and is it reachable?

Linux

sudo ss -ltnup 'sport = :378'      # process listening on 378
sudo lsof -nP -i :378

macOS

sudo lsof -nP -i :378

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 378 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 378
netstat -ano | findstr :378

From another machine

nmap -p 378 -sV <host>
sudo nmap -sU -p 378 <host>
nc -zv <host> 378

Block it in the firewall

sudo ufw deny 378/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 378" -Direction Inbound -LocalPort 378 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 378 used for?

Port 378 is assigned by IANA to dsETOS (NEC Corporation).

Is port 378 TCP or UDP?

Port 378 is registered for TCP and UDP.

Is it safe to open port 378?

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 378 is open?

On Linux run "ss -ltnup 'sport = :378'", on macOS "lsof -nP -i :378", and on Windows "netstat -ano | findstr :378" to see the local process. From another machine, "nmap -p 378 <host>" shows whether it is reachable.

05 Related
: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

Latest vulnerability news

All news