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// Monitoring & logging

Port 1046: WebFilter Remote Monitor

Port 1046 is assigned by IANA to wfremotertm (WebFilter Remote Monitor).

1046

How wfremotertm works

Monitoring & logging
monitoringdevicewfremotertm monitoringdevicewfremotertm

The monitoring server collects metrics, alerts or logs from devices over port 1046.

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 1046 dangerous?

We have no specific security note for port 1046. 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 1046

ServicePortTransportDescriptionReferenceUpdated
wfremotertm 1046 TCP, UDP WebFilter Remote Monitor - 2004-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 1046, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1046'      # process listening on 1046
sudo lsof -nP -i :1046

macOS

sudo lsof -nP -i :1046

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1046 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1046
netstat -ano | findstr :1046

From another machine

nmap -p 1046 -sV <host>
sudo nmap -sU -p 1046 <host>
nc -zv <host> 1046

Block it in the firewall

sudo ufw deny 1046/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1046" -Direction Inbound -LocalPort 1046 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1046 used for?

Port 1046 is assigned by IANA to wfremotertm (WebFilter Remote Monitor).

Is port 1046 TCP or UDP?

Port 1046 is registered for TCP and UDP.

Is it safe to open port 1046?

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 1046 is open?

On Linux run "ss -ltnup 'sport = :1046'", on macOS "lsof -nP -i :1046", and on Windows "netstat -ano | findstr :1046" to see the local process. From another machine, "nmap -p 1046 <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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