CyberHunter
Local dataset, no network
// Other services

Port 495: intecourier

Port 495 is assigned by IANA to intecourier (intecourier).

495

How intecourier works

Other services
client:495intecourierresponse client:495intecourierresponse

The client sends a request to port 495 and the intecourier 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 495 dangerous?

We have no specific security note for port 495. 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 495

ServicePortTransportDescriptionReferenceUpdated
intecourier 495 TCP, UDP intecourier - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 495, and is it reachable?

Linux

sudo ss -ltnup 'sport = :495'      # process listening on 495
sudo lsof -nP -i :495

macOS

sudo lsof -nP -i :495

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 495 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 495
netstat -ano | findstr :495

From another machine

nmap -p 495 -sV <host>
sudo nmap -sU -p 495 <host>
nc -zv <host> 495

Block it in the firewall

sudo ufw deny 495/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 495" -Direction Inbound -LocalPort 495 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 495 used for?

Port 495 is assigned by IANA to intecourier (intecourier).

Is port 495 TCP or UDP?

Port 495 is registered for TCP and UDP.

Is it safe to open port 495?

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 495 is open?

On Linux run "ss -ltnup 'sport = :495'", on macOS "lsof -nP -i :495", and on Windows "netstat -ano | findstr :495" to see the local process. From another machine, "nmap -p 495 <host>" shows whether it is reachable.

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