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Hello, |
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|
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On Tue, 29 Aug 2017, Walter Dnes wrote: |
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> I'm building up a rather large hosts file, but the adservers have a |
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>gazillion subnames for each domain, in a deliberate attempt to bypass |
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>hosts files. It would be more effective block entire domains. Is there |
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>a lightweight DNS server, or some iptables trick, or whatever, that'll |
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>block specified domains? |
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|
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Use 'dnsmasq'!!! I have e.g. this "basic" config (shortened to the |
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relevant parts): |
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|
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==== /etc/dnsmasq.conf ==== |
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[..] |
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# define servers for forwarding, e.g. my router[1]: |
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server=192.168.178.1 |
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[..] |
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conf-file=/etc/dnsmasq.d/blocklist.conf |
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==== /etc/dnsmasq.d/blocklist.conf ==== |
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# Google |
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address=/1e100.net/127.0.1.1 |
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address=/google-analytics.com/127.0.1.1 |
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address=/googleadservices.com/127.0.1.1 |
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address=/googlesyndication.com/127.0.1.1 |
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address=/googletagservices.com/127.0.1.1 |
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address=/googletagmanager.com/127.0.1.1 |
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address=/double-click.net/127.0.1.1 |
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address=/doubleclick.com/127.0.1.1 |
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address=/doubleclick.net/127.0.1.1 |
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# Farcepalm |
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address=/fb.com/127.0.1.1 |
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address=/fbcdn.net/127.0.1.1 |
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address=/facebook.com/127.0.1.1 |
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address=/facebook.net/127.0.1.1 |
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address=/facebook.de/127.0.1.1 |
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address=/facebook.fr/127.0.1.1 |
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address=/facebook.co.uk/127.0.1.1 |
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address=/whatsapp.de/127.0.1.1 |
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address=/whatsapp.com/127.0.1.1 |
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address=/internet.org/127.0.1.1 |
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address=/internet.com/127.0.1.1 |
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# ... |
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==== |
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|
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Result: |
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|
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$ host fb.com |
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fb.com has address 127.0.1.1 |
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$ nslookup fb.com |
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Server: 127.0.0.1 |
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Address: 127.0.0.1#53 |
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|
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Name: fb.com |
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Address: 127.0.1.1 |
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|
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It's still a ton of domains to add, but much less generally. I still |
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wish it'd do "shell-style" globbing like /facebook.*/ or |
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/facebook.{com,net,de,fr,co.uk}/ ... You could write a little |
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generator for that if need be ... |
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|
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You can also use conf-dir instead of conf-file: |
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|
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==== |
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-7, --conf-dir=<directory>[,<file-extension>......], |
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Read all the files in the given directory as configuration |
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files. If extension(s) are given, any files which end in those |
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extensions are skipped. Any files whose names end in ~ or start |
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with . or start and end with # are always skipped. If the exten- |
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sion starts with * then only files which have that extension are |
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loaded. So --conf-dir=/path/to/dir,*.conf loads all files with |
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the suffix .conf in /path/to/dir. This flag may be given on the |
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command line or in a configuration file. If giving it on the |
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command line, be sure to escape * characters. |
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==== |
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|
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Actually, I've just switched to |
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|
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conf-dir=/etc/dnsmasq.d,*.conf |
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|
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so I can script some stuff (Makefile, .in template, to e.g. expand |
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at least {a,b,c} style globs ;) |
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|
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HTH, |
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-dnh |
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|
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[1] note: I do not use my router with its provider-provided |
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DNS-servers, but I use open servers from opendns.com and |
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www.privacyfoundation.ch or others. Not goggles though. |
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|
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-- |
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Living on Earth may be expensive, but it includes an annual free trip |
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around the Sun. -- BSD fortune file |
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