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// Other services

Port 2064: ICG IP Relay Port

Port 2064 is assigned by IANA to icg-iprelay (ICG IP Relay Port).

2064

How icg-iprelay works

Other services
client:2064icg-iprelayresponse client:2064icg-iprelayresponse

The client sends a request to port 2064 and the icg-iprelay 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 2064 dangerous?

We have no specific security note for port 2064. 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 2064

ServicePortTransportDescriptionReferenceUpdated
icg-iprelay 2064 TCP, UDP ICG IP Relay Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2064, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2064'      # process listening on 2064
sudo lsof -nP -i :2064

macOS

sudo lsof -nP -i :2064

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2064 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2064
netstat -ano | findstr :2064

From another machine

nmap -p 2064 -sV <host>
sudo nmap -sU -p 2064 <host>
nc -zv <host> 2064

Block it in the firewall

sudo ufw deny 2064/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2064" -Direction Inbound -LocalPort 2064 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2064 used for?

Port 2064 is assigned by IANA to icg-iprelay (ICG IP Relay Port).

Is port 2064 TCP or UDP?

Port 2064 is registered for TCP and UDP.

Is it safe to open port 2064?

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 2064 is open?

On Linux run "ss -ltnup 'sport = :2064'", on macOS "lsof -nP -i :2064", and on Windows "netstat -ano | findstr :2064" to see the local process. From another machine, "nmap -p 2064 <host>" shows whether it is reachable.

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