<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>_jal</author><text>The recommendation of _The UNIX and Linux System Administration Handbook_ is a good one.&lt;p&gt;As far as Comcast, I&amp;#x27;m stuck with them, too. At least in my experience, they don&amp;#x27;t monkey with DNS - I run and use my own DNS servers, and have never seen interference.&lt;p&gt;They do run deep packet inspection, and if they detect you, for instance, torrenting commercial media, they&amp;#x27;ll inject scary messages in port 80 traffic. Given that nearly all web traffic is encrypted now, the main effect of this is to break things like automated `apt-get update`s.&lt;p&gt;One thing you can do to detect transparent DNS hijacking is to ask a nonexistent server a question. Something like `dig @13.14.15.16 news.ycombinator.com` should not give you an answer. If it does, someone&amp;#x27;s spying on and&amp;#x2F;or gaslighting you.</text><parent_chain><item><author>elliekelly</author><text>I only know enough about networking to be dangerous but I am convinced Comcast is doing shady shit with my modem when I change the DNS settings to use non-Comcast servers. Every once in a while I’ll attempt to use Wireshark to try to make sense of what’s happening but I’m pretty clueless and don’t really know what I’m looking at&amp;#x2F;for.&lt;p&gt;If anyone knows any good resources to learn about the ISP nuts and bolts that make internet magic happen between my modem and everyone else’s servers I would be most appreciative.</text></item><item><author>gman83</author><text>I always find it odd that we worry so much about how much our browsers are tracking us, but almost nothing about what our ISPs are doing. Every time I&amp;#x27;ve looked into it, it seems much worse. As far as I can tell, ISPs are legally allowed to sell your browsing history to third parties: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;tech-policy&amp;#x2F;2017&amp;#x2F;03&amp;#x2F;for-sale-your-private-browsing-history&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;tech-policy&amp;#x2F;2017&amp;#x2F;03&amp;#x2F;for-sale-your-pr...&lt;/a&gt;</text></item></parent_chain></comment><story><title>Brave, the false sensation of privacy</title><url>http://ebin.city/%7Ewerwolf/posts/brave-is-shit/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>bewuethr</author><text>I found The UNIX and Linux System Administration Handbook (5th Edition), chapters about networking and DNS very instructive, and they list a ton of additional references if you want to dig deeper.</text><parent_chain><item><author>elliekelly</author><text>I only know enough about networking to be dangerous but I am convinced Comcast is doing shady shit with my modem when I change the DNS settings to use non-Comcast servers. Every once in a while I’ll attempt to use Wireshark to try to make sense of what’s happening but I’m pretty clueless and don’t really know what I’m looking at&amp;#x2F;for.&lt;p&gt;If anyone knows any good resources to learn about the ISP nuts and bolts that make internet magic happen between my modem and everyone else’s servers I would be most appreciative.</text></item><item><author>gman83</author><text>I always find it odd that we worry so much about how much our browsers are tracking us, but almost nothing about what our ISPs are doing. Every time I&amp;#x27;ve looked into it, it seems much worse. As far as I can tell, ISPs are legally allowed to sell your browsing history to third parties: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;tech-policy&amp;#x2F;2017&amp;#x2F;03&amp;#x2F;for-sale-your-private-browsing-history&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;tech-policy&amp;#x2F;2017&amp;#x2F;03&amp;#x2F;for-sale-your-pr...&lt;/a&gt;</text></item></parent_chain></comment><story><title>Brave, the false sensation of privacy</title><url>http://ebin.city/%7Ewerwolf/posts/brave-is-shit/</url></story>