Network monitoring conventionally entails observing a system's data traffic in order to determine areas of congestion or to analyze equipment or application problems. Nagios and MRTG are useful, no-cost monitoring utilities that operate under Linux and can be used to understand mixed-platform environments where UNIX and MS Windows both operate. Progent's system support consultants can show you how to deploy each of these products to optimize and repair your infrastructure.

Nagios Network Monitoring Application
Nagios screenThe Nagios Open Source monitoring application is a host and service monitor that runs with Linux or a UNIX variant. The monitoring daemon executes periodic checks on servers and services you request by means of outside add-ons which bring back status data to Nagios. When problems are encountered, the Nagios can send notifications to administrative contacts in a number of ways such as email, instant messaging, or SMS. Current status information, archival logs, and reports can be examined using a standard web browser.

Major features of the Nagios monitor are:

  • Tracking of network services such as SMTP, HTTP, FTP, and NNTP
  • Tracking of host resources: CPU load, disk and memory usage, running processes, etc.
  • Capability to specify host ranking, allowing distinction between hosts that are not running vs. hosts that are not accessible
  • Contact notifications by email, beeper, or other user-defined means when service or host problems are detected or are fixed
  • Ability to specify scripts to be executed upon the detection of service or machine events for proactive problem remediation
  • Accommodation for deploying backup and distributed monitoring servers
  • Outboard command option that allows on-the-fly edits to be made to the monitoring and alerting activity through the use of event scripts, the web GUI, and third-party software
  • Retention of machine and service state after application restarts
  • Planned offline periods for suppressing machine and service alerts when there are deliberate outages
  • Browser interface for viewing current system state, alert and problem archive, log file, etc.
  • Authorization protocol that enables you to limit what customers can view and do from the web applet

MRTG Graphical Traffic Load Monitor
MRTG consulting helpMRTG is an Open Source tool to track the traffic load on a network. Running under Windows or Linux and most UNIX platforms, MRTG reads the traffic counters of routers and produces web pages which offer a live visual representation of this traffic.

MRTG lets you track the traffic in and out of any SNMP network device. This includes servers, routers, and switches. You can use the displayed data to determine network trouble spots.

Data you are able to graph with MRTG include:

  • Traffic in and out in bits or bytes/sec
  • Connection rate in connections per second
  • Traffic through a particular VIP/virtual server or node/real server
  • Number of concurrent sessions

Contact Progent about Network Monitoring Help
Progentís network monitoring consultants are experienced in operating a number of network monitoring tools that can help you to repair or optimize your connectivity infrastructure. To get network monitoring expertise, call Progent at 800-993-9400 or see Contact Progent.

Progent's Consulting Services for UNIX-family Systems
Progent's UNIX consulting services provide small businesses and software developers help with administering and servicing UNIX/Linux/OS X-based networks that can coexist with Microsoft technology. Progent offers your organization access to UNIX support experts, certified Microsoft engineers, Cisco-certified CCIEs, and security experts accredited by CISSP. This wide range of expertise gives your company a convenient one-stop resource to help your business to create and manage a protected and resilient multi-vendor network and communications system that blends Microsoft technology with leading variants of UNIX including: Mac OS X, Solaris, IBM AIX, HP-UX, Berkeley UNIX (BSD), SCO UNIX and Silicon Graphics IRIX or important Linux versions such as RedHat Linux, SUSE, Debian-GNU and CentOS, Ubuntu, Mandriva Linux, PCLlinuxOS, fedora, and Gentoo.

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