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// Other services

Port 1956: Vertel VMF DS

Port 1956 is assigned by IANA to vrtl-vmf-ds (Vertel VMF DS).

1956

How vrtl-vmf-ds works

Other services
client:1956vrtl-vmf-dsresponse client:1956vrtl-vmf-dsresponse

The client sends a request to port 1956 and the vrtl-vmf-ds 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 1956 dangerous?

We have no specific security note for port 1956. 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 1956

ServicePortTransportDescriptionReferenceUpdated
vrtl-vmf-ds 1956 TCP, UDP Vertel VMF DS - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1956, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1956'      # process listening on 1956
sudo lsof -nP -i :1956

macOS

sudo lsof -nP -i :1956

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1956 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1956
netstat -ano | findstr :1956

From another machine

nmap -p 1956 -sV <host>
sudo nmap -sU -p 1956 <host>
nc -zv <host> 1956

Block it in the firewall

sudo ufw deny 1956/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1956" -Direction Inbound -LocalPort 1956 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1956 used for?

Port 1956 is assigned by IANA to vrtl-vmf-ds (Vertel VMF DS).

Is port 1956 TCP or UDP?

Port 1956 is registered for TCP and UDP.

Is it safe to open port 1956?

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 1956 is open?

On Linux run "ss -ltnup 'sport = :1956'", on macOS "lsof -nP -i :1956", and on Windows "netstat -ano | findstr :1956" to see the local process. From another machine, "nmap -p 1956 <host>" shows whether it is reachable.

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