Network monitoring conventionally consists of observing a system's data traffic to help identify bottlenecks or to troubleshoot hardware or application problems. Nagios and MRTG are powerful, no-cost monitoring tools that operate with Linux and can be helpful to understand mixed-platform networks where UNIX family systems and Microsoft Windows both operate. Progent's network support engineers can show you how to use each of these utilities to optimize and repair your infrastructure.

Nagios Monitoring System
Nagios screenThe Nagios monitoring system is a host and service monitor that operates under Linux. The Nagios daemon runs periodic checks on servers and services you specify by means of outside plug-ins which bring back status data to Nagios. When problems are encountered, the daemon can send alerts to management contacts in a number of ways such as e-mail, instant messaging, or SMS. Up to date status data, historical logs, and analysis reports can be examined via a standard web browser.

Major capabilities of the Nagios monitor are:

  • Monitoring of network services such as POP3, HTTP, SSH, and NNTP
  • Monitoring of host resources: CPU load, disk and memory usage, running processes, etc.
  • Ability to define host ranking, permitting distinction between hosts that are not running vs. ones that are not accessible
  • Contact alerts by e-mail, beeper, or other pre-specified method in case service or machine issues are detected or get fixed
  • Option to define event handlers to be executed during service or host events for proactive problem remediation
  • Support for implementing backup and distributed network monitoring servers
  • External command option that enables on-the-fly edits to be defined for the monitoring and alerting behavior through the utilization of event handlers, the web interface, and third-party applications
  • Retention of host and service status across application restarts
  • Scheduled downtime for eliminating host and service notifications during deliberate service breaks
  • Web applet for examining existing system status, alert and anomaly history, log file, etc.
  • Permissions protocol that allows you to limit what customers can see and do from the web applet

MRTG Graphical Traffic Load Monitor
MRTG consulting servicesMRTG Graphical Traffic Load Monitor is an Open Source utility to monitor the traffic load on your network. Powered by Windows or Linux and most UNIX platforms, MRTG reads the traffic counters of network routers and creates web pages which provide an up-to-date visual representation of this traffic.

Multi Router Traffic Grapher allows you to track the bandwidth through any SNMP network device. This includes servers, routers, and switches. You can utilize the displayed data to identify network bottlenecks.

Data you can graph using MRTG include:

  • Bandwidth in bits or bytes per second
  • Connection rate in connections/sec
  • Bandwidth through a specific Virtual server or node/real server
  • Number of concurrent sessions

Contact Progent for Network Monitoring Consulting
Progentís network monitoring consultants are skilled in using a variety of network monitoring tools that can help you to repair or tune your network infrastructure. For network monitoring assistance, phone Progent at 800-993-9400 or visit Contact Progent.

Progent's Microsoft, Cisco, and Applications Consulting Expertise
Progent's Microsoft and Cisco authorized consultants offer businesses in the , San Jose, and in cities throughout the U.S a wide range of expertise covering the basic information technology needs shared by most small and mid-size business environments. Progent's core services include system support, MS Exchange consulting, system security support and HelpDesk consulting and support. Progent's Application Experts Group offers deep knowledge of specific application topics. By offering a one-stop resource for IT generalists and experts, Progent is able to deliver fast, economical and complete IT solutions that fit the exact needs of your company.

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