Network monitoring typically consists of observing a network’s bandwidth usage in order to determine choke points or to analyze equipment or software issues. Nagios and MRTG are powerful, no-cost monitoring utilities that run under Linux and can be helpful to monitor mixed-vendor networks where UNIX and Microsoft Windows both operate. Progent's network support consultants can show you how to use each of these products to tune and repair your infrastructure.

Nagios Open Source Monitoring Application
Nagios screenThe Nagios Open Source monitoring application is a host and service monitor that operates under Linux. The monitoring daemon executes periodic checks on servers and services you specify using outside add-ons which return status information to Nagios. When problems are encountered, the daemon can generate notifications to management personnel in a number of ways such as e-mail, instant messaging, or Short Message Service. Up to date status data, historical logs, and reports can be examined using a standard web browser.

Key capabilities of Nagios are:

  • Monitoring of network services such as SMTP, HTTP, FTP, and NNTP
  • Monitoring of host machines: CPU load, disk and memory utilization, log files, etc.
  • Ability to define network host hierarchy, allowing distinction between hosts that are not running as opposed to ones that are not accessible
  • Support personnel alerts via email, pager, or other user-specified means in case service or machine issues occur or are fixed
  • Ability to define scripts to be executed during service or machine events for proactive problem resolution
  • Support for implementing redundant and dispersed monitoring servers
  • External command interface that enables on-the-fly edits to be defined for the monitoring and alerting behavior via the use of event handlers, the web interface, and independent software
  • Preservation of host and service state across application restarts
  • Planned downtime for suppressing host and service alerts during deliberate outages
  • Browser applet for viewing current network status, alert and anomaly history, event logs, etc.
  • Authorization scheme that permits you to limit what customers can see and modify via the web interface

MRTG Graphical Traffic Load Monitor
MRTG support helpMRTG Graphical Traffic Load Monitor is an Open Source tool to track the bandwidth utilization on a network. Running under Microsoft Windows or Linux, MRTG captures data from the traffic counters of network routers and generates web-accessible graphs which offer a live intuitive depiction of this data.

MRTG lets you track the traffic through any SNMP network appliance. This includes processors, routers, and switches. You can utilize the resulting data to identify network bottlenecks.

Type of information you can graph with MRTG include:

  • Throughput in bits or bytes per second
  • Connection rate in connections per second
  • Traffic in an out of a particular VIP server or real server
  • Total number of concurrent sessions

Ask Progent for Network Monitoring Consulting
Progent’s network monitoring consultants are skilled in using a variety of network monitoring tools that can help you to troubleshoot or tune your connectivity infrastructure. To get 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 certified consultants provide clients in the San Francisco Bay Area, Northern California, and in cities across the United States a broad range of knowledge covering the basic information technology needs common to most small business environments. Progent's primary services include system support, MS Exchange help, IT security support and Help Desk consulting and support. Progent's Application Experts Team offers in-depth expertise in strategic application topics. By offering a one-stop source for IT generalists and experts, Progent is able to tailor speedy, affordable and comprehensive IT solutions that fit the specific needs of your business.

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