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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Checklists: FTW
A checklist is used to compensate for the weaknesses of human memory to
help ensure consistency and completeness in carrying out a task.
Checklists came into prominence with pilots with the pilot's checklist
first being used and developed in 1934 when a serious accident hampered
the adoption into the armed forces of a new aircraft (the predecessor to
the famous Flying Fortress). The pilots sat down and put their heads
together. What was needed was some way of making sure that everything
was done; that nothing was overlooked. What resulted was a pilot's
checklist. Actually, four checklists were developed - take-off, flight,
before landing, and after landing. The new aircraft was not "too much
aeroplane for one man to fly", it was simply too complex for any one
man's memory. These checklists for the pilot and co-pilot made sure that
nothing was forgotten.
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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