CyberHunter
Local dataset, no network
// Other services

Port 2658: SNS Admin

Port 2658 is assigned by IANA to sns-admin (SNS Admin).

2658

How sns-admin works

Other services
client:2658sns-adminresponse client:2658sns-adminresponse

The client sends a request to port 2658 and the sns-admin 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 2658 dangerous?

We have no specific security note for port 2658. 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 2658

ServicePortTransportDescriptionReferenceUpdated
sns-admin 2658 TCP, UDP SNS Admin - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2658, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2658'      # process listening on 2658
sudo lsof -nP -i :2658

macOS

sudo lsof -nP -i :2658

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2658 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2658
netstat -ano | findstr :2658

From another machine

nmap -p 2658 -sV <host>
sudo nmap -sU -p 2658 <host>
nc -zv <host> 2658

Block it in the firewall

sudo ufw deny 2658/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2658" -Direction Inbound -LocalPort 2658 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2658 used for?

Port 2658 is assigned by IANA to sns-admin (SNS Admin).

Is port 2658 TCP or UDP?

Port 2658 is registered for TCP and UDP.

Is it safe to open port 2658?

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 2658 is open?

On Linux run "ss -ltnup 'sport = :2658'", on macOS "lsof -nP -i :2658", and on Windows "netstat -ano | findstr :2658" to see the local process. From another machine, "nmap -p 2658 <host>" shows whether it is reachable.

05 Related
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