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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The trick to high availability - #keepcalm
If a plane's engines were to fail in flight then because most of them
have two, the pilot the lands the airplane. Mostly its only one engine
and rarely two as what happened with "The Miracle on the Hudson."
When the plane lands the aviation engineers then replace the failed
component, test its operation and integration and the plane takes back
to the skies. They do not do an inflight engine swap out at 10000 ft.
However, network engineers seem to always try the latter with
spectacular adverse major incidents.
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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