CyberHunter
Local dataset, no network
// Other services

Port 1796: Vocaltec Server Administration

Port 1796 is assigned by IANA to vocaltec-admin (Vocaltec Server Administration).

1796

How vocaltec-admin works

Other services
client:1796vocaltec-adminresponse client:1796vocaltec-adminresponse

The client sends a request to port 1796 and the vocaltec-admin 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 1796 dangerous?

We have no specific security note for port 1796. 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 1796

ServicePortTransportDescriptionReferenceUpdated
vocaltec-admin 1796 TCP, UDP Vocaltec Server Administration - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1796, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1796'      # process listening on 1796
sudo lsof -nP -i :1796

macOS

sudo lsof -nP -i :1796

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1796 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1796
netstat -ano | findstr :1796

From another machine

nmap -p 1796 -sV <host>
sudo nmap -sU -p 1796 <host>
nc -zv <host> 1796

Block it in the firewall

sudo ufw deny 1796/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1796" -Direction Inbound -LocalPort 1796 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1796 used for?

Port 1796 is assigned by IANA to vocaltec-admin (Vocaltec Server Administration).

Is port 1796 TCP or UDP?

Port 1796 is registered for TCP and UDP.

Is it safe to open port 1796?

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 1796 is open?

On Linux run "ss -ltnup 'sport = :1796'", on macOS "lsof -nP -i :1796", and on Windows "netstat -ano | findstr :1796" to see the local process. From another machine, "nmap -p 1796 <host>" shows whether it is reachable.

05 Related
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