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A comment on The NSA and CIA use ad blockers. Parent comment

Re:The NSA and CIA use ad blockers by urda on Thursday September 23, 2021 @02:51PM (#28633500)
This and I combo it with restricting DNS lookups to the actual LAN servers. No way to bypass the DNS at that point via the firewall.
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Re:The NSA and CIA use ad blockers by ignoramous on Thursday September 23, 2021 @04:10PM (#28634602)
> This and I combo it with restricting DNS lookups to the actual LAN servers.

This won't prevent OPs concern with apps doing DNS over HTTPS, would it?

> No way to bypass the DNS at that point via the firewall.

Some apps do not even do DNS and connect to static IPv4s and IPv6s straight-away. Even if IPv4 is limited, plenty IPv6 to go around than an ip-table can handle.

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