CyberHunter
Local dataset, no network
// Other services

Port 45966: SSRServerMgr

Port 45966 is assigned by IANA to ssr-servermgr (SSRServerMgr).

45966

How ssr-servermgr works

Other services
client:45966ssr-servermgrresponse client:45966ssr-servermgrresponse

The client sends a request to port 45966 and the ssr-servermgr 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 45966 dangerous?

We have no specific security note for port 45966. 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 45966

ServicePortTransportDescriptionReferenceUpdated
ssr-servermgr 45966 TCP, UDP SSRServerMgr - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 45966, and is it reachable?

Linux

sudo ss -ltnup 'sport = :45966'      # process listening on 45966
sudo lsof -nP -i :45966

macOS

sudo lsof -nP -i :45966

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 45966 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 45966
netstat -ano | findstr :45966

From another machine

nmap -p 45966 -sV <host>
sudo nmap -sU -p 45966 <host>
nc -zv <host> 45966

Block it in the firewall

sudo ufw deny 45966/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 45966" -Direction Inbound -LocalPort 45966 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 45966 used for?

Port 45966 is assigned by IANA to ssr-servermgr (SSRServerMgr).

Is port 45966 TCP or UDP?

Port 45966 is registered for TCP and UDP.

Is it safe to open port 45966?

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 45966 is open?

On Linux run "ss -ltnup 'sport = :45966'", on macOS "lsof -nP -i :45966", and on Windows "netstat -ano | findstr :45966" to see the local process. From another machine, "nmap -p 45966 <host>" shows whether it is reachable.

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