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I wonder if it's worth on a server only allowing outbound traffic that's in response to inbound requests? This would prevent any automated attacks from downloading root-kits, or exfiltrating data (assuming that they don't have root access - then they c...
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My mother has switched from WhatsApp to Signal Messenger recently, and immediately started complaining that pictures took many hours to send, which was never the case with WhatsApp. For example, she would send me a picture at 11am, and it would remai...
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Reduce the number of packages installed cat > /etc/apt/apt.conf.d/99_norecommends <<EOF APT::Install-Recommends "false"; APT::Install-Suggests "false"; APT::AutoRemove::RecommendsImportant "false"; APT::AutoRemove::SuggestsImportant "false"; EOF
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Cricket has a reputation as a game that takes days to play, and can still end in a draw. I personally don't mind that - after all, if both sides haven't have the chance to each complete their two innings, you can't know who would have won. However, ...
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What do Zeno's Paradoxes, Tutankhamun, The Illiad, Papal infalibility and genetic mutation have in common? They've all been the subject of an episode of In Our Time. In Our Time is a BBC Radio 4 program, where Melvyn Bragg invites two or three exp...
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If you want to get a basic OpenFlow SDN network set up, then these are the instructions you'll need to follow. Mainly for my own records. If you don't know about Software Defined Networking, then you'll probably do the steps below and wonder what th...
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Driving on the left-hand side of the road isn't as uncommon as people might think. Roughly a third of the world's population drives on the left. Countries that drive on the left are: India (1366m), Indonesia (270m), Pakistan (216m), Bangladesh...
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Recently, I've had some extra spare time at weekends, and I've been playing around with various bits of software. A couple of them, OpenWRT and LineageOS are alternative OSes for hardware (wifi routers and phones). I was quite happy to pay a good ...
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Some people don't understand the point of SPF or Sender Permitted From*. If a spammer decides to use your address as the "from" address on all of his spam emails he's sending out, you'll be deluged with "mailbox full", "user no longer here", or "out ...
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Data are plural. "The data show an increase in..." I know that is correct, but no matter how often I hear it, it just doesn't sound right.