Network monitoring typically entails tracking a system's data traffic in order to identify areas of congestion or to troubleshoot equipment or application issues. Nagios and MRTG are powerful, no-cost monitoring utilities that operate with Linux and can be helpful to monitor multi-platform environments where UNIX and Microsoft Windows both operate. Progent's network support experts can show you how to deploy each of these tools to tune and troubleshoot your network.

Nagios Network Monitoring System
Nagios screenThe Nagios Open Source monitoring system is a host and service monitor that runs with Linux. The monitoring daemon executes periodic inspections of servers and services you specify using external add-ons which return status data to Nagios. When problems are encountered, the Nagios can send alerts to management contacts in a number of ways such as email, instant messaging, or Short Message Service. Current status information, archival records, and analysis reports can be examined via the web.

Key features of Nagios are:

  • Tracking of network services such as SMTP, HTTP, FTP, and NNTP
  • Tracking of host machines: processor load, disk and memory usage, log files, etc.
  • Ability to specify network host ranking, allowing differentiation between hosts that are not running as opposed to ones that are unreachable
  • Contact alerts via email, pager, or other user-defined means in case service or machine issues are detected or get fixed
  • Ability to define event handlers to be executed during service or machine events for automated problem remediation
  • Support for implementing backup and dispersed monitoring servers
  • External command option that allows on-the-fly edits to be defined for the tracking and notification activity through the utilization of event handlers, the web interface, and third-party applications
  • Preservation of machine and service status across program restarts
  • Scheduled offline periods for eliminating machine and service alerts during intentional service breaks
  • Browser interface for examining existing system status, notification and problem archive, log file, etc.
  • Authorization scheme that allows you to restrict what customers can see and modify via the browser interface

MRTG support servicesMulti Router Traffic Grapher (MRTG) is an Open Source utility to monitor the traffic load on your network. Running under Microsoft Windows or Linux, MRTG reads the traffic counters of network routers and creates web pages which offer a live intuitive depiction of this traffic.

Multi Router Traffic Grapher allows you to track the bandwidth in and out of any SNMP-enabled network device. This includes processors, routers, and switches. Administrators can use the displayed data to identify network trouble spots.

Data you are able to graph with MRTG include:

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

Contact Progent about Network Monitoring Consulting
Progentís network monitoring consultants are experienced in operating a variety of utilities that can assist you to repair or optimize your network infrastructure. For network monitoring expertise, phone Progent at 800-993-9400 or go to Contact Progent.

Progent's Support for UNIX-family Environments
Progent's UNIX-family consulting services provide small companies and product developers assistance with administering and supporting UNIX/Linux/OS X-based networks that may coexist with Microsoft technology. Progent offers your company the services of UNIX technical experts, authorized Microsoft engineers, Cisco-certified CCIEs, and security specialists certified by CISSP and CISM. This wide range of knowledge offers your company a convenient one-stop resource to help your business to create and manage a protected and resilient cross-platform connectivity and communications solution that combines Microsoft technology with popular variants of UNIX such as: Mac OS X, Sun Solaris, IBM AIX Open UNIX, HP-UX (Hewlett Packard UNIX), BSD, SCO and Silicon Graphics IRIX (SGI/IRIX) or major Linux versions including RedHat, SUSE Linux, Debian-GNU and CentOS, Ubuntu Linux, Mandriva, PCLlinuxOS Linux, fedora, and Gentoo.

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