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// Other services

Port 1968: LIPSinc

Port 1968 is assigned by IANA to lipsinc (LIPSinc).

1968

How lipsinc works

Other services
client:1968lipsincresponse client:1968lipsincresponse

The client sends a request to port 1968 and the lipsinc 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 1968 dangerous?

We have no specific security note for port 1968. 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 1968

ServicePortTransportDescriptionReferenceUpdated
lipsinc 1968 TCP, UDP LIPSinc - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1968, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1968'      # process listening on 1968
sudo lsof -nP -i :1968

macOS

sudo lsof -nP -i :1968

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1968 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1968
netstat -ano | findstr :1968

From another machine

nmap -p 1968 -sV <host>
sudo nmap -sU -p 1968 <host>
nc -zv <host> 1968

Block it in the firewall

sudo ufw deny 1968/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1968" -Direction Inbound -LocalPort 1968 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1968 used for?

Port 1968 is assigned by IANA to lipsinc (LIPSinc).

Is port 1968 TCP or UDP?

Port 1968 is registered for TCP and UDP.

Is it safe to open port 1968?

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 1968 is open?

On Linux run "ss -ltnup 'sport = :1968'", on macOS "lsof -nP -i :1968", and on Windows "netstat -ano | findstr :1968" to see the local process. From another machine, "nmap -p 1968 <host>" shows whether it is reachable.

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