PRTG Network Monitor (DC-TE-MON-02)
News From Paessler
You don't use a database unless you have to store important information that is relevant for your business. Consequently it's vital for the stored data to be accessible at any time with the best performance possible. That's why it's of the utmost importance for you as a system administrator to know the current status of your databases and to be alerted if the status changes.
PRTG Network Monitor offers various possibilities for Linux monitoring. The easiest way is to use one of our native sensors that run on the Local Probe or the Remote Probe of a Windows system, located in your network, and gather data via SNMP (Simple Network Management Protocol), WBEM (Web-Based Enterprise Management), or SSH (Secure Shell)?like, for example, monitoring the memory usage of your Linux/Unix system using the SSH Meminfo sensor.
It's almost December and yet 2014 doesn't seem to leave any room for peace and quiet?at least not for system administrators. Even in the year's final quarter there seems to be no break from new headlines about security vulnerabilities: 2014 will definitely be one of those years for everyone in IT to remember. Unfortunately, not all memories are good ones. Some might even be downright scary. Do you recall the morning you went to work and received news about the OpenSSL Heartbleed Bug or the POODLE vulnerability only a few weeks ago? We certainly do?and this by far weren't the only security related surprises, the last few months held in store for IT administrators and managers worldwide.
Did you know with PRTG Network Monitor you have a full scale SNMP Trap Receiver at hand? With SNMP (Simple Network Management Protocol) traps you can easily track reports of important incidents and data. SNMP-enabled devices trigger these asynchronous notifications for various reasons, such as system events, outages, critical conditions, and many more. PRTG collects these messages, stores them in a high performance database, and analyzes their content.
When I started as the Android Developer at Paessler nearly two years ago, my sole task was to build a native Android client that wasn?t this. Beyond the requirement that it be ?better than that?, it was mostly left up to me how it looked and functioned, within the parameters that it works like a PRTG user would expect (so, there?ll be no Tinder-like carousel of "swipe left to favorite this sensor/swipe right to delete it" UI in the Android app, as I?m sure you?re delighted to hear).
Remember when we told you we're on our way to Barcelona? We gave our team a camera to ask happy customers for a short testimonial. A Paessler team would not be a Paessler team though if they did not use their camera for filming a tutorial during breaks.
Six years ago the IT landscape was quite different from what we are used to today. Six years ago? That doesn't seem like such a long time! Well, in technology it is. In this regard you could almost compare tech years to dog years. Let's think back to 2008: Apple has just released the first generation of its iPhone, virtualization was being made more approachable with VMware Workstation 6.5, and Windows 7 had not even reached its beta phase. From today's perspective it seems like another world and it's no surprise also PRTG Network Monitor has come a long way, since version 7 has been released in 2008.
After Heartbleed and Shellshock the next security vulnerability is eager to make 2014 one of the years for admins to remember. This one is called POODLE (Padding Oracle on Downloaded Legacy Encryption) and was found in SSL 3.0, an almost 18-year-old encryption technology that is only used in less than 1% of worldwide SSL traffic?but it's nonetheless still used on the server side to support old browsers like, for example, Internet Explorer 6.
Monitoring via Secure Shell (SSH) enables you to gather information not only from many Linux/Unix and Mac OS systems, but also from the host hardware of your virtualization solution. It is essential to keep a close eye on the host servers as they are the backbone of all your virtual machines. A failure or even unusual behavior could lead to unforeseeable damage and require hours of work that could easily have been prevented.
If you have read all previous articles of this blog series, you're already quite an expert on how to utilize the PRTG Mini Probe API for your monitoring needs. After providing you with the proof of concept for monitoring your Linux systems with the Python Mini Probe, we want to show you another area of application?a probe for monitoring Java applications using Java Management Extensions: the JMX Mini Probe.
Last week has been crazy at the Paessler office ? crazy empty. Everyone was on the road, all over the world. We had a team in New York, in London and in our hometown of Nuremberg. We are just dropping in for a second to tell you about these events because tomorrow we are gone again.
The best way to monitor the traffic in your network depends on several factors. If you are the responsible administrator for a high traffic network which is equipped with a lot of Cisco devices, NetFlow is the ideal monitoring option. In flow monitoring, the router gathers bandwidth usage data (flows), aggregates these flows, and sends UDP packets with flow information back to PRTG Network Monitor.
Just when you're glad the last security crisis has been averted, the next one seems to lurk right around the corner. Be it the infamous OpenSSL Heartbleed Bug, or other vulnerabilities that led to data theft and attacks on the IT infrastructure ? you have to be prepared. This week Ars Technica reported about yet another bug: The GNU Bourne Again Shell (Bash) is affected by a security vulnerability. The Bash command-line shell is used in many Linux, Unix, and also Mac operating systems.
The more Windows clients you are responsible for in your network, the more likely the chances that some of them fail the Windows update once in a while?even with a sound update concept. To identify systems which haven't been updated with the latest security patches and performance enhancements, PRTG Network Monitor provides a simple but effective method: the Windows Last Update sensor.
The "Sensor of the Week" articles are a neat way for you to discover new areas of applications for PRTG Network Monitor?even ones you might yet not have thought of. This time, even if you already know and use the QoS (Quality of Service) Round Trip sensor, we urge you to keep on reading as we present to you a great new way to monitor the quality of a network connection without using remote probes: the PRTG QoS Reflector (open source) for the QoS Round Trip sensor!