Avatar for Username

Tìm kiếm hỗ trợ

Tránh các lừa đảo về hỗ trợ. Chúng tôi sẽ không bao giờ yêu cầu bạn gọi hoặc nhắn tin đến số điện thoại hoặc chia sẻ thông tin cá nhân. Vui lòng báo cáo hoạt động đáng ngờ bằng cách sử dụng tùy chọn "Báo cáo lạm dụng".

Tìm hiểu thêm

Chủ đề này đã được lưu trữ. Vui lòng hỏi một câu hỏi mới nếu bạn cần giúp đỡ.

Configured DNS over HTTPS, but DNS is still coming from my ISP

  • 1 trả lời
  • 2 gặp vấn đề này
  • 1 lượt xem
  • Trả lời mới nhất được viết bởi TyDraniu

crismerritt
crismerritt
more options

I have configured Firefox (version 74.0 for Mac) for DNS over HTTPS with Cloudflare (see image 1). But if I enter a domain that does not exist, I get a branded page from my ISP, Verizon, that says the domain does not exist (see image 2). So apparently Verizon is still responding to my DNS requests, not Cloudflare over HTTPS. Any idea what's up? Thanks.

I have configured Firefox (version 74.0 for Mac) for DNS over HTTPS with Cloudflare (see image 1). But if I enter a domain that does not exist, I get a branded page from my ISP, Verizon, that says the domain does not exist (see image 2). So apparently Verizon is still responding to my DNS requests, not Cloudflare over HTTPS. Any idea what's up? Thanks.
Đính kèm ảnh chụp màn hình

Giải pháp được chọn

Right, when a page does not exist (or Firefox fails to resolve a domain via DoH), there is a fallback to the system DNS.

To change it, enter about:config in the url bar and set network.trr.mode = 3

  • 0 - Off (default). use standard native resolving only (don't use TRR at all)
  • 1 - Reserved (used to be Race mode)
  • 2 - First. Use TRR first, and only if the name resolve fails use the native resolver as a fallback.
  • 3 - Only. Only use TRR, never use the native resolver.
    • Up to FF >= 73, this mode also requires the bootstrapAddress pref to be set.
    • Starting with Firefox 74, setting the bootstrap address is no longer mandatory - the browser will simply bootstrap itself using regular DNS, unless the DoH server domain can't be resolved.
  • 4 - Reserved (used to be Shadow mode)
  • 5 - Off by choice. This is the same as 0 but marks it as done by choice and not done by default.
Đọc câu trả lời này trong ngữ cảnh 👍 1

Tất cả các câu trả lời (1)

TyDraniu
TyDraniu
  • Top 25 Contributor
more options

Giải pháp được chọn

Right, when a page does not exist (or Firefox fails to resolve a domain via DoH), there is a fallback to the system DNS.

To change it, enter about:config in the url bar and set network.trr.mode = 3

  • 0 - Off (default). use standard native resolving only (don't use TRR at all)
  • 1 - Reserved (used to be Race mode)
  • 2 - First. Use TRR first, and only if the name resolve fails use the native resolver as a fallback.
  • 3 - Only. Only use TRR, never use the native resolver.
    • Up to FF >= 73, this mode also requires the bootstrapAddress pref to be set.
    • Starting with Firefox 74, setting the bootstrap address is no longer mandatory - the browser will simply bootstrap itself using regular DNS, unless the DoH server domain can't be resolved.
  • 4 - Reserved (used to be Shadow mode)
  • 5 - Off by choice. This is the same as 0 but marks it as done by choice and not done by default.

Được chỉnh sửa bởi TyDraniu vào