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30.11.2025
this kind of hardware monitoring. But much hardware information can also be retrieved using SNMP. An SNMP monitor called OpenNMS relies on users to provide vendor-independent hardware monitoring. Popular ... The OpenNMS monitoring tool is a kind of all-purpose weapon that can provide administrators with a versatile range of information.
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30.11.2025
A couple of years ago, I was teaching Linux at a large-scale IT service provider's office. Their administrators had plenty of experience with commercial Unix variants, such as HP-UX, and they asked ... The new cgroups feature provides an administrative approach to restricting resource use. This application is particularly interesting for virtualized systems.
70%
30.11.2025
Routine updates to a Linux distribution can cause trouble; we provide some practical tips to help you recover.
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Over the past few years, companies have changed the way they look at IT. Companies now view IT as a service provided from one department to another, or perhaps provided to customers. This has led ... Providing the necessary IT services to your employees or customers is more than simply logging tickets and keeping track of hardware. We compare several ITIL-compliant help desk packages.
64%
30.11.2025
Java EE provides a development platform based on various software components and services that has become pretty much the standard for developing enterprise applications. Clearly defined APIs allow ... Web-based, enterprise-capable applications often rely on the vendor-independent Java Platform, Enterprise Edition. We provide an introduction to Java EE based on the JBoss application server.
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30.11.2025
a shell script evaluates immediately after launching the sensor.
Various programs are suitable for automated, "unmanned" access to the service provided by a given daemon; all of them will run in the shell ... Administrators often write custom monitoring programs to make sure their daemons are providing the intended functionality. But simple shell tools are just as well suited to this task, and not just
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30.11.2025
To save users the trouble of configuring a STUN server and then discovering that it doesn't work, SIP providers have extended their proxies to support what is known as Symmetric Response Routing. The IP ... Conventional VoIP telephony doesn't provide for the complications of a firewall. The STUN protocol is the standard fix, but sometimes STUN just isn't enough.
64%
30.11.2025
modules that build on this framework. If users need a feature that the existing Horde applications do not provide, you can easily program a module to match on the basis of the framework and integrate ... If you want to provide webmail for an IMAP server and need a groupware component on top, Horde may be exactly what you are looking for – especially if you want a web mailer that you can access
64%
30.11.2025
and then managed as a single device. The individual switches in a stack typically don't have redundant power supplies, but creating a stack can still provide redundancy and thus a flexible solution, just like ... Virtualization doesn't necessarily provide protection against system failure if the network is a single point of failure. We explain how to set up redundant network connections for virtual machines
64%
30.11.2025
Companies that deploy Microsoft's Small Business Server (SBS) 2008 to provide a variety of services on the server should make sure that they keep the server up to date. Only servers with the latest ... Small Business Server is a compact solution for file, print, and mail services in small businesses. We provide step-by-step instructions for installing the required updates.
