CyberHunter
Local dataset, no network
// Other services

Port 1777: powerguardian

Port 1777 is assigned by IANA to powerguardian (powerguardian).

1777

How powerguardian works

Other services
client:1777powerguardianresponse client:1777powerguardianresponse

The client sends a request to port 1777 and the powerguardian 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 1777 dangerous?

We have no specific security note for port 1777. 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 1777

ServicePortTransportDescriptionReferenceUpdated
powerguardian 1777 TCP, UDP powerguardian - 2008-08-29

// source: IANA service name and port number registry

03 Check it

Which program uses port 1777, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1777'      # process listening on 1777
sudo lsof -nP -i :1777

macOS

sudo lsof -nP -i :1777

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1777 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1777
netstat -ano | findstr :1777

From another machine

nmap -p 1777 -sV <host>
sudo nmap -sU -p 1777 <host>
nc -zv <host> 1777

Block it in the firewall

sudo ufw deny 1777/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1777" -Direction Inbound -LocalPort 1777 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1777 used for?

Port 1777 is assigned by IANA to powerguardian (powerguardian).

Is port 1777 TCP or UDP?

Port 1777 is registered for TCP and UDP.

Is it safe to open port 1777?

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 1777 is open?

On Linux run "ss -ltnup 'sport = :1777'", on macOS "lsof -nP -i :1777", and on Windows "netstat -ano | findstr :1777" to see the local process. From another machine, "nmap -p 1777 <host>" shows whether it is reachable.

05 Related
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