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// Other services

Port 1177: DKMessenger Protocol

Port 1177 is assigned by IANA to dkmessenger (DKMessenger Protocol).

1177

How dkmessenger works

Other services
client:1177dkmessengerresponse client:1177dkmessengerresponse

The client sends a request to port 1177 and the dkmessenger 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 1177 dangerous?

We have no specific security note for port 1177. 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 1177

ServicePortTransportDescriptionReferenceUpdated
dkmessenger 1177 TCP, UDP DKMessenger Protocol - 2004-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 1177, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1177'      # process listening on 1177
sudo lsof -nP -i :1177

macOS

sudo lsof -nP -i :1177

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1177 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1177
netstat -ano | findstr :1177

From another machine

nmap -p 1177 -sV <host>
sudo nmap -sU -p 1177 <host>
nc -zv <host> 1177

Block it in the firewall

sudo ufw deny 1177/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1177" -Direction Inbound -LocalPort 1177 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1177 used for?

Port 1177 is assigned by IANA to dkmessenger (DKMessenger Protocol).

Is port 1177 TCP or UDP?

Port 1177 is registered for TCP and UDP.

Is it safe to open port 1177?

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 1177 is open?

On Linux run "ss -ltnup 'sport = :1177'", on macOS "lsof -nP -i :1177", and on Windows "netstat -ano | findstr :1177" to see the local process. From another machine, "nmap -p 1177 <host>" shows whether it is reachable.

05 Related
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