This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started). Mostly now the topics are about IoT and SD-WAN.
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Data center power efficiency increases, but so do power outages
An Uptime Institute survey finds the power
usage effectiveness of data centers is better than ever. However, power
outages have increased significantly. The leading causes of data center outages are power outages (33
percent), network failures (30 percent), IT staff or software errors (28
percent), on-premises non-power failure (12 percent), and third-party
service provider outages (31 percent). To err is human, and this
survey showed it. Nearly 80 percent said their most recent outage could
have been prevented. And that human error extends to management
decisions, Ascierto said.
Firewalls are becoming increasingly important in today’s world. Hackers and automated scripts are constantly trying to invade your system and use it for Bitcoin mining, botnets or other things. To prevent these attacks, you can use a firewall on your system. IPTables is the strongest firewall in Linux because it can filter packets in the kernel before they reach the application. Using IPTables is not very easy for Linux beginners. We have created easywall - the simple IPTables web interface . The focus of the software is on easy installation and use. Access this neat software over on github: easywall
When building a DDoS mitigation service it’s incredibly tempting to think that the solution is scrubbing centers or scrubbing servers. I, too, thought that was a good idea in the beginning, but experience has shown that there are serious pitfalls to this approach. Read the post of at Cloudflare's blog: N o Scrubs: The Architecture That Made Unmetered Mitigation Possible
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