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Re: DNS hits

From Glenn English <ghe2001@gmail.com>
Newsgroups linux.debian.user
Subject Re: DNS hits
Date 2017-02-12 19:30 +0100
Message-ID <ta74l-1en-7@gated-at.bofh.it> (permalink)
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 > On Sat, Feb 11, 2017 at 2:07 PM, Henning Follmann <
hfollmann@itcfollmann.com
> wrote

Actually the current Bind in stable is just a blessing in this respect.
> It -by default- just allows recursion for localnet, localhost.
>

This server is still Wheezy. The virtual websites didn't work on Jessie
Apache (I have no idea why yet).


> So if you don't mess with it at all is does the right thing automagically.
>
> Most likely if you remove anything you tried to configure in the options it
> will work just the way you want.
>

I'd already done what Eduardo suggested in his post (config BIND to allow
recursion from only a specified list of IPs), and all was well -- as soon
as I tested it properly.


FWIW, I ran dnstop for a while. I saw quite a bit of my own server at
first, but over few minutes, its output turned into a list of hits on my
domains. Almost all from the 52, 54 area (AWS). I don't know, but I assume
dnstop is looking at packets before iptables processes them. If not,
something is still badly broken.

Also FWIW, At github there's a very nice shell script that downloads, from
Amazon, a list of the nets in AWS, creates iptables DROP commands for them,
and enters the commands into your iptables filter. Takes a little futzing
to make it run on Wheezy, but it runs out of the box on Jessie:

https://github.com/corbanworks/aws-blocker/blob/master/aws-blocker


The router seems reasonably quiet right now. Maybe the script kiddies are
all at church, praying for their souls...

-- 
Glenn English

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Thread

DNS hits Glenn English <ghe2001@gmail.com> - 2017-02-11 19:00 +0100
  Re: DNS hits Steve Kemp <steve@steve.org.uk> - 2017-02-11 19:50 +0100
  Re: DNS hits Henning Follmann <hfollmann@itcfollmann.com> - 2017-02-11 22:10 +0100
    Re: DNS hits Glenn English <ghe2001@gmail.com> - 2017-02-12 00:20 +0100
      Re: DNS hits Andy Smith <andy@strugglers.net> - 2017-02-12 02:40 +0100
        Re: DNS hits Glenn English <ghe2001@gmail.com> - 2017-02-12 04:50 +0100
      Re: DNS hits Eduardo M KALINOWSKI <eduardo@kalinowski.com.br> - 2017-02-12 11:40 +0100
      Re: DNS hits Henning Follmann <hfollmann@itcfollmann.com> - 2017-02-12 15:10 +0100
        (d@@g) Bug #849382: apt Markus <debianer@gmx.de> - 2017-02-12 15:30 +0100
          Re: (d@@g) Bug #849382: apt Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-02-12 15:40 +0100
          Re: (d@@g) Bug #849382: apt Martin Read <zen75502@zen.co.uk> - 2017-02-12 16:10 +0100
        Re: DNS hits Glenn English <ghe2001@gmail.com> - 2017-02-12 19:30 +0100
          RE: DNS hits Bonno Bloksma <b.bloksma@tio.nl> - 2017-02-13 11:10 +0100
  Re: DNS hits Igor Cicimov <icicimov@gmail.com> - 2017-02-12 01:10 +0100

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