Network monitoring typically entails observing a network’s data traffic in order to identify choke points or to troubleshoot hardware or software issues. Nagios and MRTG are useful, free monitoring utilities that run under Linux and can be used to understand mixed-platform networks where UNIX family systems and MS Windows both operate. Progent's system integration engineers can help you use both these tools to optimize and troubleshoot your network.

Nagios Network Monitoring Application
Nagios screenThe Nagios monitoring system is a host and service monitor that runs with Linux or a UNIX variant. The Nagios daemon executes intermittent inspections of hosts and services you request by means of outside add-ons which return status information to Nagios. When issues are encountered, the Nagios can send alerts to support personnel in a variety of ways such as email, instant messaging, or Short Message Service. Up to date status information, archival records, and reports can be examined via a web browser.

Major capabilities of the Nagios monitor are:

  • Monitoring of network services such as POP3, HTTP, SSH, and PING
  • Tracking of host resources: CPU load, memory/disk usage, running processes, etc.
  • Capability to specify host ranking, permitting distinction between hosts that are down vs. ones that are unreachable
  • Support personnel alerts by e-mail, pager, or other pre-defined means in case service or machine problems occur or get fixed
  • Option to define scripts to be run upon the detection of service or machine events for proactive problem remediation
  • Accommodation for deploying backup and distributed network monitoring computers
  • Outboard command interface that enables on-the-fly modifications to be made to the monitoring and notification activity through the use of event handlers, the web interface, and independent applications
  • Retention of host and service status across application restarts
  • Scheduled offline periods for eliminating host and service notifications when there are deliberate service breaks
  • Web applet for examining current system state, alert and anomaly history, event logs, etc.
  • Authorization scheme that permits you to restrict what users can view and modify from the web interface

Multi Router Traffic Grapher (MRTG)
MRTG support servicesMRTG Graphical Traffic Load Monitor is an Open Source utility to track the bandwidth utilization on a network. Running under Microsoft Windows or Linux and most UNIX platforms, MRTG reads the traffic counters of network routers and creates web pages which provide a live visual representation of this traffic.

Multi Router Traffic Grapher permits you to graph the traffic in and out of any SNMP-enabled network device. This includes processors, routers, and switches. Administrators can use the displayed data to identify system bottlenecks.

Data you are able to depict using MRTG include:

  • Bandwidth in bits or bytes/sec
  • Connection rate in connections per second
  • Bandwidth in an out of a specific VIP/virtual server or node/real server
  • Total number of concurrent sessions

Contact Progent for Network Monitoring Help
Progent’s network monitoring consultants are skilled in operating a number of utilities that can assist you to repair or optimize your network infrastructure. For network monitoring expertise, phone Progent at 800-993-9400 or see Contact Progent.

Progent's Expertise for UNIX Systems
Progent's UNIX support services provide small businesses and developers assistance with administering and servicing UNIX/Linux/Mac-based networks that can operate alongside Microsoft-based technology. Progent provides your business contact with UNIX technical professionals, authorized Microsoft consultants, Cisco CCIEs, and security specialists accredited by CISSP and CISM. This wide array of knowledge gives you a convenient single resource to assist your business to build and maintain a protected and robust multi-vendor network and communications system that blends Microsoft technology with popular derivatives of UNIX including: macOS and OS X , Solaris, IBM AIX OS, HP-UX (Hewlett Packard UNIX), BSD, SCO UNIX and SGI/Irix or important Linux variants including RedHat, SUSE, Debian GNU/Linux and CentOS, Ubuntu Linux, Mandriva, PCLOS, fedora Linux, and Gentoo Linux.

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