143 lines
4.9 KiB
HTML
143 lines
4.9 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
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<title>SysAdmin2022</title>
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</head>
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<body>
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<div class="reveal">
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<div class="slides">
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<section>
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<h2>Learning about slightly more advanced networking with linux</h2>
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<p><b>Paul Warren</b></p>
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<p>Mastodon: @pwarren@mastodon.thewarrens.name </p>
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<p>email: paul at thewarrens.name </p>
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<p>© 2021 Paul Warren</p>
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<p>CC BY-NC-SA<p>
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</section>
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<section><h2 style="color:red">! WARNING !</h2>
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<p>I am not a network engineer, there are gaps in my knowledge</p>
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<p>The words I use might not be the correct ones</p>
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<p>Please don't blame me if your network stops networking</p>
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<p class="fragment">Maybe don't go and try building an ISP based off this talk :)</p>
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</section>
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<section><h2>How it started</h2>
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<p class="fragment">One subnet</p>
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<p class="fragment">Standard tech shop router with defaults</p>
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<p class="fragment">Made mistakes that broke critical applications</p>
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<aside class="notes">
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<p>usual 192.168.0.0/24</p>
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<p>Such as netflix and iview</p>
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</aside>
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</section>
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<section><h2>So where to from here?</h2>
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<p class="fragment">linux can do VLANs, lets see if that helps!</p>
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<aside class="notes">
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<p>It did!</p>
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</aside>
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</section>
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<section><h2>What even is a network</h2>
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<p class="fragment fade-in-then-out">Ethernet?</p>
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<p class="fragment fade-in-then-out">Token Ring?</p>
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<p class="fragment fade-in-then-out">IPX?</p>
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<p class="fragment fade-in-then-out">AX.25?</p>
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</section>
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<section><h2>What even is a network</h2>
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<p class="fragment fade-in-then-out">ipv4?</p>
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<p class="fragment fade-in-then-out">ipv6?</p>
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<p class="fragment fade-in-then-out">tcp?</p>
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<p class="fragment">Allows connections between computers</p>
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</section>
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<section><h2>Managed network?</h2>
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<p class="fragment"><b>Controls</b> connections between computers</p>
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<p class="fragment"><b>Scales</b> connections between computers</p>
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<p class="fragment"><img src="3tier.png" /><p>
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<aside class="notes">
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<p>Most of us probably work in a managed network</p>
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<p>Diagram is nice, but hides complexities at each layer.<p>
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</aside>
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</section>
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<section><h2>Layers!</h2>
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<p class="fragment">Like an onion!</p>
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<p class="fragment">That 7 layer thing from the OSI</p>
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<p class="fragment">Administrative overlays</p>
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<p class="fragment">VPNs/Tunnelled
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<aside class="notes">
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<p>or a parfait</p>
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<p>which you can mostly ignore, as what we have doesn't conform to it. But it does provide a good framework for assisting understanding</p>
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</section>
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<section><h2>The Problems</h2>
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<p class="fragment">
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<p class="fragment">VLAN</p>
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<p class="fragment">OSPF</p>
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</section>
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<section>more detail on what VLANs, OSPF and BGP are for</section>
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<section>how to do these things in linux</section>
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<section>intro to bird</section>
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<section>more detail on bird</section>
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<section>building out a virtual network with LXC</section>
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<section>ergh, NAT</section>
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<section>Why use a 'real' router</section>
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<section>OpenWRT</section>
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<section><h2>Resources</h2>
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<p>These slides: <a href="https://gitea.pwarren.id.au/pwarren/SysAdmin2022">https://gitea.pwarren.id.au/pwarren/SysAdmin2022</a></p>
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<p>bird: <a href="https://bird.network.cz/">https://bird.network.cz</a></p>
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<p>KNorrie's network examples: <a href="https://github.com/knorrie/network-examples">https://github.com/knorrie/network-examples</a></p>
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<p>Openwrt: <a href="https://openwrt.org">https://openwrt.org/</a></p>
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<p>The OpenWRT IRC channel, currently on the OFTC network</p>
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</section>
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</div>
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</div>
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