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// Other services

Port 4422: TSEP Installation Service Protocol

Port 4422 is assigned by IANA to tsepisp (TSEP Installation Service Protocol).

4422

How tsepisp works

Other services
client:4422tsepispresponse client:4422tsepispresponse

The client sends a request to port 4422 and the tsepisp 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 4422 dangerous?

We have no specific security note for port 4422. 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 4422

ServicePortTransportDescriptionReferenceUpdated
tsepisp 4422 TCP TSEP Installation Service Protocol - 2016-06-22
-4422-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 4422, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4422'      # process listening on 4422
sudo lsof -nP -i :4422

macOS

sudo lsof -nP -i :4422

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4422 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4422
netstat -ano | findstr :4422

From another machine

nmap -p 4422 -sV <host>
nc -zv <host> 4422

Block it in the firewall

sudo ufw deny 4422/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4422" -Direction Inbound -LocalPort 4422 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4422 used for?

Port 4422 is assigned by IANA to tsepisp (TSEP Installation Service Protocol).

Is port 4422 TCP or UDP?

Port 4422 is registered for TCP.

Is it safe to open port 4422?

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 4422 is open?

On Linux run "ss -ltnup 'sport = :4422'", on macOS "lsof -nP -i :4422", and on Windows "netstat -ano | findstr :4422" to see the local process. From another machine, "nmap -p 4422 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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