CyberHunter
Local dataset, no network
// Other services

Port 1958: CA Administration Daemon

Port 1958 is assigned by IANA to dxadmind (CA Administration Daemon).

1958

How dxadmind works

Other services
client:1958dxadmindresponse client:1958dxadmindresponse

The client sends a request to port 1958 and the dxadmind 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 1958 dangerous?

We have no specific security note for port 1958. 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 1958

ServicePortTransportDescriptionReferenceUpdated
dxadmind 1958 TCP, UDP CA Administration Daemon - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1958, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1958'      # process listening on 1958
sudo lsof -nP -i :1958

macOS

sudo lsof -nP -i :1958

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1958 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1958
netstat -ano | findstr :1958

From another machine

nmap -p 1958 -sV <host>
sudo nmap -sU -p 1958 <host>
nc -zv <host> 1958

Block it in the firewall

sudo ufw deny 1958/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1958" -Direction Inbound -LocalPort 1958 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1958 used for?

Port 1958 is assigned by IANA to dxadmind (CA Administration Daemon).

Is port 1958 TCP or UDP?

Port 1958 is registered for TCP and UDP.

Is it safe to open port 1958?

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 1958 is open?

On Linux run "ss -ltnup 'sport = :1958'", on macOS "lsof -nP -i :1958", and on Windows "netstat -ano | findstr :1958" to see the local process. From another machine, "nmap -p 1958 <host>" shows whether it is reachable.

05 Related
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