CyberHunter
Local dataset, no network
// Other services

Port 741: netGW

Port 741 is assigned by IANA to netgw (netGW).

741

How netgw works

Other services
client:741netgwresponse client:741netgwresponse

The client sends a request to port 741 and the netgw 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 741 dangerous?

We have no specific security note for port 741. 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 741

ServicePortTransportDescriptionReferenceUpdated
netgw 741 TCP, UDP netGW - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 741, and is it reachable?

Linux

sudo ss -ltnup 'sport = :741'      # process listening on 741
sudo lsof -nP -i :741

macOS

sudo lsof -nP -i :741

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 741 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 741
netstat -ano | findstr :741

From another machine

nmap -p 741 -sV <host>
sudo nmap -sU -p 741 <host>
nc -zv <host> 741

Block it in the firewall

sudo ufw deny 741/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 741" -Direction Inbound -LocalPort 741 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 741 used for?

Port 741 is assigned by IANA to netgw (netGW).

Is port 741 TCP or UDP?

Port 741 is registered for TCP and UDP.

Is it safe to open port 741?

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 741 is open?

On Linux run "ss -ltnup 'sport = :741'", on macOS "lsof -nP -i :741", and on Windows "netstat -ano | findstr :741" to see the local process. From another machine, "nmap -p 741 <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

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