CyberHunter
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// Other services

Port 1277: mqs

Port 1277 is assigned by IANA to miva-mqs (mqs).

1277

How miva-mqs works

Other services
client:1277miva-mqsresponse client:1277miva-mqsresponse

The client sends a request to port 1277 and the miva-mqs 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 1277 dangerous?

We have no specific security note for port 1277. 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 1277

ServicePortTransportDescriptionReferenceUpdated
miva-mqs 1277 TCP, UDP mqs - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1277, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1277'      # process listening on 1277
sudo lsof -nP -i :1277

macOS

sudo lsof -nP -i :1277

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1277 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1277
netstat -ano | findstr :1277

From another machine

nmap -p 1277 -sV <host>
sudo nmap -sU -p 1277 <host>
nc -zv <host> 1277

Block it in the firewall

sudo ufw deny 1277/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1277" -Direction Inbound -LocalPort 1277 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1277 used for?

Port 1277 is assigned by IANA to miva-mqs (mqs).

Is port 1277 TCP or UDP?

Port 1277 is registered for TCP and UDP.

Is it safe to open port 1277?

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 1277 is open?

On Linux run "ss -ltnup 'sport = :1277'", on macOS "lsof -nP -i :1277", and on Windows "netstat -ano | findstr :1277" to see the local process. From another machine, "nmap -p 1277 <host>" shows whether it is reachable.

05 Related
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