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Multihoming – was es zu bedenken gilt, wenn ein Computer mehr als eine IP Adresse hat

Im Gegensatz zu einfachen Arbeitscomputer verfügen Serversysteme über mindestens zwei Netzwerkkarten, eher gleich vier NICs. Ebenso verfügen viele Servercomputer über mehrere IP-Adressen, über die sie aus dem Netzwerk erreichbar sind. Verfügt ein Computersystem über mehrere Netzwerkadressen, so wird dies als „Multihoming" bezeichnet. Interessanterweise nutzt die Branche die Begrifflichkeit für gleich mehrere Variationen:

-          Eine redundante Adresse mit mehreren Interfaces

-          Ein Server mit mehreren Adressen an mehreren Interfaces

-          Mehrere Adressen auf einem Interface

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So verwalten und überwachen Sie Ihre IP-Adressen mit Windows IPAM

Zu den mehr generellen Anforderungen, die an jeden Administrator gestellt werden, gehört es, dass diese IT-Mitarbeiter immer den Überblick behalten sollen. Jeder vernünftig denkende Mensch wird bestätigen, dass das zwar wünschenswert, aber im Prinzip häufig eher nicht leicht bis hin zu unmöglich sein kann. Aber wenn es um die IT geht und deren Verfügbarkeit geht, ist Vernunft nicht immer die vorherrschende Eigenschaft und die Administratoren können jede nur denkbare Hilfe gut brauchen, um ihre IT im Griff zu behalten.

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How to Keep Your Network Organized with DNS and Subnetting Schemes

In our article "12 Characteristics of a Well-Maintained LAN", we have several items listed. Each item is important, but I'd like to focus on a couple of these items in more detail:

  • Standardized Naming Conventions
  • Well-Designed Network Addressing and Subnetting

You may ask, "Why these two in particular?". Well, in my position as a pre-sales engineer, I encounter problems and issues related to these two fairly frequently.

As a IT professional I've battled these issues from several angles. Both being a slave to a network that evolved organically and to a network planned in way too much detail. Neither approach is ideal but both have merit -- like project management, it can either be part of the solution or part of the problem. I'd like to describe the problems and a solution. 

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2017-Apr-20 in IT Insights
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How to Optimize Your Apps for a CDN and Then Monitor the Impact

The following article is the last in our 3-part series about CDNs (Content Delivery Networks). Our guest author, Matt Conran from Network Insight, discusses CDN performance metrics and monitoring, what you can do to optimize your website for CDNs, and which strategy is better for CDNs: build or buy?

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Warum Hybrid-Cloud-Monitoring essentiell für Ihr Netzwerk ist

In mittleren und großen Unternehmen gehört die regelmäßige Überwachung von IT-Ressourcen zum Tagesgeschäft. Aber auch viele kleinere Firmen wissen die Vorteile der Überwachung von Systemauslastung, freiem Speicherplatz, Erreichbarkeit oder Servicequalität zu schätzen. Schließlich möchte die IT auch in solchen, eher überschaubaren Umgebungen nicht unbedingt vom Anwender erfahren müssen, dass Komponenten ausgefallen sind. Eine solche oft beschworene „Proaktivität" soll so für reibungslose Abläufe sorgen, indem beispielsweise der Administrator schon Tage vorher erkennt, dass ein Festplattenspeicher zur Neige gehen wird.

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Do You Know How to Avoid These 12 Network Issues before They Occur? (Hint: You Really Should!)

Many common network issues can be minimized or avoided altogether with a mixture of proactive monitoring, anticipating problems and planned recovery strategies.

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The 3 Levels of Phishing and How You Can Convince Your Colleagues Not to Become Prey

Back in the day, all it took to lure someone into emptying their pockets was an email from a Nigerian prince. Today, scammers are having a much harder time as people are used to these kinds of emails and most of them land unopened in their spam folder. But don't be deceived, scammers are more active than ever and even keener on tricking you into giving them valuable, personal information by posing as a trustworthy source. This tactic is known as phishing and it has proven to be very successful. So year after year, they up the ante, adding new variations here and there. Let's go over the three levels of phishing.

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How To Prepare for an On-Camera Interview: What I Learned From a TV Professional

I have been lucky enough to give a number of interviews over the years. Lucky because, if someone decides you are worth listening to enough that they put you in front of a camera, you either really are worth listening to, or you just happen to work for the right company and they think you are! Either way, it's a real privilege and I hope there has been, in my case, at least a mixture of both. 

Most interviews have been relatively unprepared and spontaneous, but my most recent rendition was different. Firstly, it was with Business Reporter, an offshoot of the Daily Telegraph newspaper. With a daily circulation of over 460,000, the Daily Telegraph is the most read "broadsheet" newspaper in the UK and 6th overall. As such, the pressure was on to deliver in a way I hadn't experienced before. And secondly, there was a very structured, highly detailed preparation process.

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2017-Apr-10 in IT Insights
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Celebrate World Uptime Day And Share Your Success Story

Uptime is obviously near and dear to Paessler's heart. That's why we're excited about establishing "World Uptime Day"—a day for system administrators and their users to celebrate our common goal of reaching 100% uptime.

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2017-Apr- 7 in Monitoring Insights
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Don’t Let Downtime Cost You Your Business: Why Insight into IT is Critical for SMBs

In an interview last year with Business Reporter, part of the Daily Telegraph newspaper, a major broadsheet in the UK, I outlined my thoughts around how small and medium sized businesses can mitigate risk and reduce downtime by investing in the right technologies. Here are some of my insights.

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