CyberHunter
Local dataset, no network
// Other services

Port 3577: Configuration Port

Port 3577 is assigned by IANA to config-port (Configuration Port).

3577

How config-port works

Other services
client:3577config-portresponse client:3577config-portresponse

The client sends a request to port 3577 and the config-port 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 3577 dangerous?

We have no specific security note for port 3577. 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 3577

ServicePortTransportDescriptionReferenceUpdated
config-port 3577 TCP, UDP Configuration Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3577, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3577'      # process listening on 3577
sudo lsof -nP -i :3577

macOS

sudo lsof -nP -i :3577

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3577 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3577
netstat -ano | findstr :3577

From another machine

nmap -p 3577 -sV <host>
sudo nmap -sU -p 3577 <host>
nc -zv <host> 3577

Block it in the firewall

sudo ufw deny 3577/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3577" -Direction Inbound -LocalPort 3577 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3577 used for?

Port 3577 is assigned by IANA to config-port (Configuration Port).

Is port 3577 TCP or UDP?

Port 3577 is registered for TCP and UDP.

Is it safe to open port 3577?

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 3577 is open?

On Linux run "ss -ltnup 'sport = :3577'", on macOS "lsof -nP -i :3577", and on Windows "netstat -ano | findstr :3577" to see the local process. From another machine, "nmap -p 3577 <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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