CyberHunter
Local dataset, no network
// Other services

Port 1602: inspect

Port 1602 is assigned by IANA to inspect (inspect).

1602

How inspect works

Other services
client:1602inspectresponse client:1602inspectresponse

The client sends a request to port 1602 and the inspect 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 1602 dangerous?

We have no specific security note for port 1602. 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 1602

ServicePortTransportDescriptionReferenceUpdated
inspect 1602 TCP, UDP inspect - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1602, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1602'      # process listening on 1602
sudo lsof -nP -i :1602

macOS

sudo lsof -nP -i :1602

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1602 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1602
netstat -ano | findstr :1602

From another machine

nmap -p 1602 -sV <host>
sudo nmap -sU -p 1602 <host>
nc -zv <host> 1602

Block it in the firewall

sudo ufw deny 1602/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1602" -Direction Inbound -LocalPort 1602 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1602 used for?

Port 1602 is assigned by IANA to inspect (inspect).

Is port 1602 TCP or UDP?

Port 1602 is registered for TCP and UDP.

Is it safe to open port 1602?

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 1602 is open?

On Linux run "ss -ltnup 'sport = :1602'", on macOS "lsof -nP -i :1602", and on Windows "netstat -ano | findstr :1602" to see the local process. From another machine, "nmap -p 1602 <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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