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// Other services

Port 10023: Comtech EF-Data's Vipersat Management Protocol

Port 10023 is assigned by IANA to cefd-vmp (Comtech EF-Data's Vipersat Management Protocol).

10023

How cefd-vmp works

Other services
client:10023cefd-vmpresponse client:10023cefd-vmpresponse

The client sends a request to port 10023 and the cefd-vmp service answers.

Transport
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)
01 Security

Is port 10023 dangerous?

We have no specific security note for port 10023. 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 10023

ServicePortTransportDescriptionReferenceUpdated
cefd-vmp 10023 UDP Comtech EF-Data's Vipersat Management Protocol - 2014-01-23
-10023-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 10023, and is it reachable?

Linux

sudo ss -ltnup 'sport = :10023'      # process listening on 10023
sudo lsof -nP -i :10023

macOS

sudo lsof -nP -i :10023

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 10023 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 10023
netstat -ano | findstr :10023

From another machine

nmap -p 10023 -sV <host>
sudo nmap -sU -p 10023 <host>
nc -zv <host> 10023

Block it in the firewall

sudo ufw deny 10023/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 10023" -Direction Inbound -LocalPort 10023 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 10023 used for?

Port 10023 is assigned by IANA to cefd-vmp (Comtech EF-Data's Vipersat Management Protocol).

Is port 10023 TCP or UDP?

Port 10023 is registered for UDP.

Is it safe to open port 10023?

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 10023 is open?

On Linux run "ss -ltnup 'sport = :10023'", on macOS "lsof -nP -i :10023", and on Windows "netstat -ano | findstr :10023" to see the local process. From another machine, "nmap -p 10023 <host>" shows whether it is reachable.

05 Related

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