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// Other services

Port 1741: cisco-net-mgmt

Port 1741 is assigned by IANA to cisco-net-mgmt (cisco-net-mgmt).

1741

How cisco-net-mgmt works

Other services
client:1741cisco-net-mgmtresponse client:1741cisco-net-mgmtresponse

The client sends a request to port 1741 and the cisco-net-mgmt 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 1741 dangerous?

We have no specific security note for port 1741. 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 1741

ServicePortTransportDescriptionReferenceUpdated
cisco-net-mgmt 1741 TCP, UDP cisco-net-mgmt - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1741, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1741'      # process listening on 1741
sudo lsof -nP -i :1741

macOS

sudo lsof -nP -i :1741

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1741 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1741
netstat -ano | findstr :1741

From another machine

nmap -p 1741 -sV <host>
sudo nmap -sU -p 1741 <host>
nc -zv <host> 1741

Block it in the firewall

sudo ufw deny 1741/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1741" -Direction Inbound -LocalPort 1741 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1741 used for?

Port 1741 is assigned by IANA to cisco-net-mgmt (cisco-net-mgmt).

Is port 1741 TCP or UDP?

Port 1741 is registered for TCP and UDP.

Is it safe to open port 1741?

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 1741 is open?

On Linux run "ss -ltnup 'sport = :1741'", on macOS "lsof -nP -i :1741", and on Windows "netstat -ano | findstr :1741" to see the local process. From another machine, "nmap -p 1741 <host>" shows whether it is reachable.

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