CyberHunter
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// Other services

Port 2063: ICG Bridge Port

Port 2063 is assigned by IANA to icg-bridge (ICG Bridge Port).

2063

How icg-bridge works

Other services
client:2063icg-bridgeresponse client:2063icg-bridgeresponse

The client sends a request to port 2063 and the icg-bridge 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 2063 dangerous?

We have no specific security note for port 2063. 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 2063

ServicePortTransportDescriptionReferenceUpdated
icg-bridge 2063 TCP, UDP ICG Bridge Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2063, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2063'      # process listening on 2063
sudo lsof -nP -i :2063

macOS

sudo lsof -nP -i :2063

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2063 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2063
netstat -ano | findstr :2063

From another machine

nmap -p 2063 -sV <host>
sudo nmap -sU -p 2063 <host>
nc -zv <host> 2063

Block it in the firewall

sudo ufw deny 2063/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2063" -Direction Inbound -LocalPort 2063 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2063 used for?

Port 2063 is assigned by IANA to icg-bridge (ICG Bridge Port).

Is port 2063 TCP or UDP?

Port 2063 is registered for TCP and UDP.

Is it safe to open port 2063?

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 2063 is open?

On Linux run "ss -ltnup 'sport = :2063'", on macOS "lsof -nP -i :2063", and on Windows "netstat -ano | findstr :2063" to see the local process. From another machine, "nmap -p 2063 <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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