In this, the first in a series of articles looking at how PRTG can help Exchange Admins to manage their systems, we look at the continued popularity of email as a corporate communications tool. We’ll also see how PRTG’s pre-defined Exchange sensors can provide a great overview of system health and performance. In subsequent articles, we’ll see how custom sensors can provide even deeper insight into the many components and sub-systems that make up an Exchange infrastructure.
Never Lose Sight of the Hardware Infrastructure - and 9 More Tips You Need to Know About IoT Monitoring
It makes no difference whether your boss has only just heard about the Internet of Things and is now on the lookout for new business models, or your customer wants a fully-networked Smart Home with intelligent electrical outlets. At the end of the day, a feature-rich, high-performance Internet of Things will require IT administrators who understand their craft. So, here are ten tips that will help you get to grips with the challenges of network monitoring.
Flow based monitoring (NetFlow, sFlow, jFlow, IPFIX...) is a powerful method to get detailed information about the traffic on your switches and firewalls. It not only delivers data about the sheer amount of traffic, but also what kind of traffic it is, where it comes from and where it goes to. Using flow monitoring you can get top lists of users, connections or protocols. However, not every switch, router, or firewall supports flow protocols. Most flow protocol supporting devices are expensive high-end series, while older devices or budget series don't support it. You can find more information about flow monitoring at the Paessler manual https://www.paessler.com/manuals/prtg/flow_monitoring.
UPS (Uninterruptible Power Supply) devices protect your data in the event of power failure. They can do this only if they work reliably. You need to monitor your UPS devices continuously. UPS devices from APC by Schneider Electric are very common.
We want to monitor the temperature of our server room, and we want to do it on a budget. Maybe because we are, or maybe because we can! What do we need?
- Raspberry Pi Zero W: ca. $10
- Power supply for the Pi: ca. $10 (you can even use a Powerbank to make this thing mobile!)
- Mirco SD Card for the Pi: ca. $8
- Case for the Pi: ca $5
- Enviro pHAT for the Pi: ca. $16
- Obviously we need PRTG Network Monitor with its HTTP Push Data Advanced Sensor
PRTG already features a lot of notification options: sending email, SMS, executing commands, calling URLs, and many more. With Telegram, there is another option: Bots! You can send messages to them and they will output them in a group with all your fellow administrator colleagues.
One of the most common (and frustrating!) questions a sysadmin needs to answer is: who is hogging all my bandwidth?
The network is slow, users are complaining, and your internet connection is at 100% (again...). You need to figure out who or what is hogging all the bandwidth, and you need to do it fast. In this article, I'll explain the different methods that are available in different situations, and how to use SNMP, RMON, flow and packet sniffing to track down the culprits.
I wouldn't be surprised if you told me you have fallen in love with SNMP. Because it is so universal in network administration. Because it is a powerful all-round talent that supplies you with nearly every kind of information you need about whatever network device. Surely you love SNMP, if you know how to set it up on your machine. And if you know what OIDs are and what you need MIBs for. And if your setup is fine, SNMP works reliably (at least it should), and you can live happily ever after.
One of the more general requirements placed on every administrator is that of always maintaining an overview. Any reasonable person will confirm that this is desirable, yet in practice often difficult - if not impossible. But when it comes to IT and its availability, reason is not always the prevailing quality, and administrators can use every conceivable aid to keep their IT under control.