CyberHunter
Local dataset, no network
// Other services

Port 1957: unix-status

Port 1957 is assigned by IANA to unix-status (unix-status).

1957

How unix-status works

Other services
client:1957unix-statusresponse client:1957unix-statusresponse

The client sends a request to port 1957 and the unix-status 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 1957 dangerous?

We have no specific security note for port 1957. 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 1957

ServicePortTransportDescriptionReferenceUpdated
unix-status 1957 TCP, UDP unix-status - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1957, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1957'      # process listening on 1957
sudo lsof -nP -i :1957

macOS

sudo lsof -nP -i :1957

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1957 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1957
netstat -ano | findstr :1957

From another machine

nmap -p 1957 -sV <host>
sudo nmap -sU -p 1957 <host>
nc -zv <host> 1957

Block it in the firewall

sudo ufw deny 1957/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1957" -Direction Inbound -LocalPort 1957 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1957 used for?

Port 1957 is assigned by IANA to unix-status (unix-status).

Is port 1957 TCP or UDP?

Port 1957 is registered for TCP and UDP.

Is it safe to open port 1957?

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 1957 is open?

On Linux run "ss -ltnup 'sport = :1957'", on macOS "lsof -nP -i :1957", and on Windows "netstat -ano | findstr :1957" to see the local process. From another machine, "nmap -p 1957 <host>" shows whether it is reachable.

05 Related
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