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// Monitoring & logging

Port 3830: Cerner System Management Agent

Port 3830 is assigned by IANA to cernsysmgmtagt (Cerner System Management Agent).

3830

How cernsysmgmtagt works

Monitoring & logging
monitoringdevicecernsysmgmtagt monitoringdevicecernsysmgmtagt

The monitoring server collects metrics, alerts or logs from devices over port 3830.

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
Monitoring & logging
01 Security

Is port 3830 dangerous?

We have no specific security note for port 3830. Its risk depends on the program actually listening on it. General advice for monitoring & logging services:

  • Restrict management and monitoring protocols to the monitoring network.
  • Replace community strings and default credentials.
  • Send logs over TLS.
02 Registry

IANA registry entries for port 3830

ServicePortTransportDescriptionReferenceUpdated
cernsysmgmtagt 3830 TCP, UDP Cerner System Management Agent - 2008-01-29

// source: IANA service name and port number registry

03 Check it

Which program uses port 3830, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3830'      # process listening on 3830
sudo lsof -nP -i :3830

macOS

sudo lsof -nP -i :3830

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3830 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3830
netstat -ano | findstr :3830

From another machine

nmap -p 3830 -sV <host>
sudo nmap -sU -p 3830 <host>
nc -zv <host> 3830

Block it in the firewall

sudo ufw deny 3830/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3830" -Direction Inbound -LocalPort 3830 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3830 used for?

Port 3830 is assigned by IANA to cernsysmgmtagt (Cerner System Management Agent).

Is port 3830 TCP or UDP?

Port 3830 is registered for TCP and UDP.

Is it safe to open port 3830?

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. Restrict management and monitoring protocols to the monitoring network.

How do I check if port 3830 is open?

On Linux run "ss -ltnup 'sport = :3830'", on macOS "lsof -nP -i :3830", and on Windows "netstat -ano | findstr :3830" to see the local process. From another machine, "nmap -p 3830 <host>" shows whether it is reachable.

05 Related
:161 SNMP udp · tcp · high risk :162 SNMP trap udp · tcp · moderate risk :9090 Prometheus / admin consoles tcp · udp · high risk :514 Syslog udp · tcp · moderate risk :6514 Syslog over TLS tcp · udp · dccp · low risk :5601 Kibana tcp · udp · high risk :391 SynOptics SNMP Relay Port tcp · udp :412 Trap Convention Port tcp · udp

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