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// Monitoring & logging

Port 31685: DS Expert Monitor

Port 31685 is assigned by IANA to dsx_monitor (DS Expert Monitor), dsx-monitor (DS Expert Monitor IANA assigned this well-formed service name as a replacement for "dsx_monitor".).

31685

How dsx_monitor works

Monitoring & logging
monitoringdevicedsx_monitor monitoringdevicedsx_monitor

The monitoring server collects metrics, alerts or logs from devices over port 31685.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Monitoring & logging
01 Security

Is port 31685 dangerous?

We have no specific security note for port 31685. 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 31685

ServicePortTransportDescriptionReferenceUpdated
dsx_monitor 31685 TCP DS Expert Monitor - 2008-08-21
dsx-monitor 31685 TCP DS Expert Monitor IANA assigned this well-formed service name as a replacement for "dsx_monitor". - 2008-08-21
-31685-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 31685, and is it reachable?

Linux

sudo ss -ltnup 'sport = :31685'      # process listening on 31685
sudo lsof -nP -i :31685

macOS

sudo lsof -nP -i :31685

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 31685 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 31685
netstat -ano | findstr :31685

From another machine

nmap -p 31685 -sV <host>
nc -zv <host> 31685

Block it in the firewall

sudo ufw deny 31685/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 31685" -Direction Inbound -LocalPort 31685 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 31685 used for?

Port 31685 is assigned by IANA to dsx_monitor (DS Expert Monitor), dsx-monitor (DS Expert Monitor IANA assigned this well-formed service name as a replacement for "dsx_monitor".).

Is port 31685 TCP or UDP?

Port 31685 is registered for TCP.

Is it safe to open port 31685?

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 31685 is open?

On Linux run "ss -ltnup 'sport = :31685'", on macOS "lsof -nP -i :31685", and on Windows "netstat -ano | findstr :31685" to see the local process. From another machine, "nmap -p 31685 <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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