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Subproject commit e831620546feea5f585f4ad6b6d6618385892384
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Subproject commit b361e52effd174fc96d9cdc0ec444c9333f33bb9
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11
n/dns.md
11
n/dns.md
@ -64,13 +64,6 @@ brings up two bigger issues EDNS client-subnet:
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queries.
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queries.
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- Think of VPNs where traffic within the VPN is encrypted, but it won't
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- Think of VPNs where traffic within the VPN is encrypted, but it won't
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magically encrypt plain traffic leaving it.
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magically encrypt plain traffic leaving it.
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- The part given to the au4thoritative nameserver is `/24` on IPv4 and
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`/56` on IPv6. These equal 192.0.2.x so if a MITM wanted to know who you
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are there would be 254 options (assuming there are no NATs). On IPv6 a
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`/56` includes 256 `/64` blocks and `/64` is the most used block and there
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is a recommendation of giving customers a `/56` block, so it would point
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directly to your connection. However some mobile operators give a `/64`
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so it will again point to 256 options again. Not that many.
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- Anyone between the recursive and authoritative nameservers can perform cache
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- Anyone between the recursive and authoritative nameservers can perform cache
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poisoning attack and give it a narrow target. With short TTL, it may be
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poisoning attack and give it a narrow target. With short TTL, it may be
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impossible to audit afterwards. Only DNSSEC can protect from this, but
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impossible to audit afterwards. Only DNSSEC can protect from this, but
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@ -88,8 +81,8 @@ These issues bring additional questions:
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for gayming. Virtual machine lab? Who cares. Larger organization? That may
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for gayming. Virtual machine lab? Who cares. Larger organization? That may
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be a big target?
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be a big target?
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- How much does getting local content matter to you? More or less than
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- How much does getting local content matter to you? More or less than
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increased resource use of contacting a server further away? _Is private ECS
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increased resource use of contacting a server further away? Is private ECS
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an option?_ ([r/resolv.tsv](/r/resolv.tsv))
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an option? ([r/resolv.tsv](/r/resolv.tsv))
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- What is the impact of domains you visit being surveilled?
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- What is the impact of domains you visit being surveilled?
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- This page mentions cases like FFUpdater where the surveillance would
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- This page mentions cases like FFUpdater where the surveillance would
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reveal that I interact with github.com and other sites it downloads apk
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reveal that I interact with github.com and other sites it downloads apk
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