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// Other services

Port 5195: The protocol is used by a license server and client programs to control use of program licenses that float to networked machines

Port 5195 is assigned by IANA to ampl-lic (The protocol is used by a license server and client programs to control use of program licenses that float to networked machines).

5195

How ampl-lic works

Other services
client:5195ampl-licresponse client:5195ampl-licresponse

The client sends a request to port 5195 and the ampl-lic 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 5195 dangerous?

We have no specific security note for port 5195. 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 5195

ServicePortTransportDescriptionReferenceUpdated
ampl-lic 5195 TCP The protocol is used by a license server and client programs to control use of program licenses that float to networked machines - 2012-05-25
-5195-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5195, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5195'      # process listening on 5195
sudo lsof -nP -i :5195

macOS

sudo lsof -nP -i :5195

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5195 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5195
netstat -ano | findstr :5195

From another machine

nmap -p 5195 -sV <host>
nc -zv <host> 5195

Block it in the firewall

sudo ufw deny 5195/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5195" -Direction Inbound -LocalPort 5195 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5195 used for?

Port 5195 is assigned by IANA to ampl-lic (The protocol is used by a license server and client programs to control use of program licenses that float to networked machines).

Is port 5195 TCP or UDP?

Port 5195 is registered for TCP.

Is it safe to open port 5195?

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 5195 is open?

On Linux run "ss -ltnup 'sport = :5195'", on macOS "lsof -nP -i :5195", and on Windows "netstat -ano | findstr :5195" to see the local process. From another machine, "nmap -p 5195 <host>" shows whether it is reachable.

05 Related
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