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  1. Nagios XI - Monitoring TCP/UDP Ports Monitoring TCP/UDP Ports With Nagios XI This video tutorial will demonstrate how to Monitoring TCP and UDP ports in Nagios XI, via the Monitor TCP/UDP Wizard.       Final Thoughts For any support related questions please visit the Nagios Support... Read More
  2. SNMP Trap - Inbound UDP Traffic Inbound TCP Traffic These steps explain how to confirm that the Nagios server is receiving SNMP Trap traffic destined for it on the UDP port 162. In this example, the following applies: Remote computer sending SNMP Traps 10.25.5.20 Nagios server ... Read More
  3. Nagios Network Analyzer - Receiving Netflow Traffic On IPv6 Overview This KB article provides the technical steps necessary to enable a Source in Nagios Network Analyzer to receive netflow traffic on IPv6 addresses. Nagios Network Analyzer runs instances of the nfcapd program for each source to listen for ne... Read More
  4. SNMP Trap - Firewall Rules Firewall Rules These steps explain how to check if the Operating System (OS) of the Nagios server has firewall rules enabled to allow inbound SNMP Trap UDP port 162 traffic. The different supported OS's have different firewall commands which are... Read More
  5. Translating and Converting MIB Files Translating and Converting MIB Files   Prerequisite MIBs One of the most common issues that users encounter with SNMP Traps and MIB files are that most MIB files require other MIB files to be loaded on the system so they can be fully translated. Sol... Read More
  6. Forwarding Logs from Nagios Log Server to Another Destination Forwarding Logs from Nagios Log Server If necessary, you can forward all of the logs from your Nagios Log server to a different server by creating a new output in NLS. To create a new output: In NLS, navigate to Configure > Global Config. Click... Read More
  7. Nagios XI - Receiving IPv6 SNMP Traps Overview This KB article explains how to configure Nagios XI to receive SNMP Traps that come in via IPv6 (Internet Protocol version 6). It is a requirement to have already followed this guide to install all the SNMP Trap pre-requisites: Documentatio... Read More
  8. Nagios Log Server - Newline Character Added When Adding A Filter To A Search Problem Description You will observe that sometimes filters that are added to a search contain a newline (\n) character to the filter and due to this no results are found.     Explanation In this screenshot, you can see that from an event, clic... Read More
  9. Nagios Log Server - Troubleshooting SELinux and rsyslog Overview If one of your Linux hosts is running SELinux and rsyslog, you may be running into issues receiving logs from from this host on one of your Nagios Log Server nodes. This article will show you how to resolve this problem. In this article: ... Read More
  10. Nagios Log Server - Full Architecture Overview High-Level Overview Nagios Log Server is an application that provides organizations a central location to send their machine generated event data (e.g., Windows Event Logs, Linux syslogs, mail server logs, web server logs, application logs) which w... Read More
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