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// Other services

Port 1490: insitu-conf

Port 1490 is assigned by IANA to insitu-conf (insitu-conf).

1490

How insitu-conf works

Other services
client:1490insitu-confresponse client:1490insitu-confresponse

The client sends a request to port 1490 and the insitu-conf 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 1490 dangerous?

We have no specific security note for port 1490. 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 1490

ServicePortTransportDescriptionReferenceUpdated
insitu-conf 1490 TCP, UDP insitu-conf - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1490, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1490'      # process listening on 1490
sudo lsof -nP -i :1490

macOS

sudo lsof -nP -i :1490

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1490 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1490
netstat -ano | findstr :1490

From another machine

nmap -p 1490 -sV <host>
sudo nmap -sU -p 1490 <host>
nc -zv <host> 1490

Block it in the firewall

sudo ufw deny 1490/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1490" -Direction Inbound -LocalPort 1490 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1490 used for?

Port 1490 is assigned by IANA to insitu-conf (insitu-conf).

Is port 1490 TCP or UDP?

Port 1490 is registered for TCP and UDP.

Is it safe to open port 1490?

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 1490 is open?

On Linux run "ss -ltnup 'sport = :1490'", on macOS "lsof -nP -i :1490", and on Windows "netstat -ano | findstr :1490" to see the local process. From another machine, "nmap -p 1490 <host>" shows whether it is reachable.

05 Related
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