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Failed DNS queries when port specified

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  • Last reply by FabienB

FabienB
FabienB
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Hi,

I'm having an issue with Firefox (on CachyOS, but i'm pretty sure that is not relevant) when I try to hit domain with PORT number.

To be clear, I have a "service" I am locally hosting on a more widely available "domain.com" (those are examples of course...) I am using this typology to still be able to generate Let's Encrypt certs for domains (that I own) not accessible outside my network for those sub-domains, and am using therefore Pi-hole to serve the few IPs of my few "service123.domain.com"

When I use a Chromium based browser (or FF ESR v128) the only DNS query is for "https://service.domain.com:8000" is "service.domain.com" (as seen on pihole queries and in FF-ESR/Chromium DNS cache), whereas FF 135 there is first a "service.domain.com" (righfully answered by my local DNS), and then a second query "_8000._https.service.domain.com" is sent, but my pihole doesn't seem to recognize (and shouldn't have to interpret anything concerning ports), so it sends it to upstream DNS (which are unable to answer)

I have disabled DoH, and every extensions. So I am really lost on what as changed in FF that would explain this, or if it's a pihole config problem (weirdly only affecting FF 135+ ...)

Feel free to ask anything, I may have omitted important info. Thanks in advance

Hi, I'm having an issue with Firefox (on CachyOS, but i'm pretty sure that is not relevant) when I try to hit domain with PORT number. To be clear, I have a "service" I am locally hosting on a more widely available "domain.com" (those are examples of course...) I am using this typology to still be able to generate Let's Encrypt certs for domains (that I own) not accessible outside my network for those sub-domains, and am using therefore Pi-hole to serve the few IPs of my few "service123.domain.com" When I use a Chromium based browser (or FF ESR v128) the only DNS query is for "https://service.domain.com:8000" is "service.domain.com" (as seen on pihole queries and in FF-ESR/Chromium DNS cache), whereas FF 135 there is first a "service.domain.com" (righfully answered by my local DNS), and then a second query "_8000._https.service.domain.com" is sent, but my pihole doesn't seem to recognize (and shouldn't have to interpret anything concerning ports), so it sends it to upstream DNS (which are unable to answer) I have disabled DoH, and every extensions. So I am really lost on what as changed in FF that would explain this, or if it's a pihole config problem (weirdly only affecting FF 135+ ...) Feel free to ask anything, I may have omitted important info. Thanks in advance

All Replies (1)

FabienB
FabienB Question owner
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Just as a quick footer note : same URL with no PORT specified works perfectly fine (still served by pihole)

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