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// Other services

Port 8457: Nexenta Management GUI

Port 8457 is assigned by IANA to nexentamv (Nexenta Management GUI).

8457

How nexentamv works

Other services
client:8457nexentamvresponse client:8457nexentamvresponse

The client sends a request to port 8457 and the nexentamv service answers.

Transport
TCP
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 8457 dangerous?

We have no specific security note for port 8457. 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 8457

ServicePortTransportDescriptionReferenceUpdated
nexentamv 8457 TCP Nexenta Management GUI - 2012-12-07
-8457-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 8457, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8457'      # process listening on 8457
sudo lsof -nP -i :8457

macOS

sudo lsof -nP -i :8457

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8457 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8457
netstat -ano | findstr :8457

From another machine

nmap -p 8457 -sV <host>
nc -zv <host> 8457

Block it in the firewall

sudo ufw deny 8457/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8457" -Direction Inbound -LocalPort 8457 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8457 used for?

Port 8457 is assigned by IANA to nexentamv (Nexenta Management GUI).

Is port 8457 TCP or UDP?

Port 8457 is registered for TCP.

Is it safe to open port 8457?

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 8457 is open?

On Linux run "ss -ltnup 'sport = :8457'", on macOS "lsof -nP -i :8457", and on Windows "netstat -ano | findstr :8457" to see the local process. From another machine, "nmap -p 8457 <host>" shows whether it is reachable.

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