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[GH-ISSUE #571] iOS 14 devices will not resolve reverse proxy addresses from external IP #478

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opened 2026-02-26 06:33:00 +03:00 by kerem · 3 comments

kerem commented

2026-02-26 06:33:00 +03:00

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Originally created by @JCandle on GitHub (Aug 23, 2020).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/571

My subdomain (for example, homeassistant.mydomain.com) would never load from an external IP after hours of trying everything. Page could not load. After scouring the net, I found some information about adding proxy_hide_header Upgrade; in the nginx config which still didn't work. Redid the whole docker multiple times redid my DNS entries on cloudflare multiple times, re did my firewall settings multiple times, etc.

Turns out, for a reason far beyond my ability to troubleshoot, I cannot access any of my reverse proxy domain names from devices running iOS 14 on an external IP. If I do it from my wifi on my iPhone, no problem. The second I disconnect my WiFi, to see if my reverse proxy is working externally, the pages stop working. Naturally I thought it was just a mistake on my end but I finally read something about iOS causing issues way back in '16 and instead used my hotspot to try from my mac and voila, everything worked fine.

I tried externally from an iOS 13 device and no issues.

How to reproduce:
Take any working reverse proxy that you have
Use an iOS 14 device to try to connect to the subdomain from an external IP.
Get "Safari cannot open the page because the server cannot be found."

I am happy to share my domains for testing with any dev that wants to reproduce.

Originally created by @JCandle on GitHub (Aug 23, 2020). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/571 My subdomain (for example, homeassistant.mydomain.com) would never load from an external IP after hours of trying everything. Page could not load. After scouring the net, I found some information about adding proxy_hide_header Upgrade; in the nginx config which still didn't work. Redid the whole docker multiple times redid my DNS entries on cloudflare multiple times, re did my firewall settings multiple times, etc. Turns out, for a reason far beyond my ability to troubleshoot, I cannot access any of my reverse proxy domain names from devices running iOS 14 on an external IP. If I do it from my wifi on my iPhone, no problem. The second I disconnect my WiFi, to see if my reverse proxy is working externally, the pages stop working. Naturally I thought it was just a mistake on my end but I finally read something about iOS causing issues way back in '16 and instead used my hotspot to try from my mac and voila, everything worked fine. I tried externally from an iOS 13 device and no issues. How to reproduce: Take any working reverse proxy that you have Use an iOS 14 device to try to connect to the subdomain from an external IP. Get "Safari cannot open the page because the server cannot be found." I am happy to share my domains for testing with any dev that wants to reproduce.

kerem

2026-02-26 06:33:00 +03:00

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kerem commented

2026-02-26 06:33:00 +03:00

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@florianeichincode commented on GitHub (Nov 5, 2020):

I have the same problem

If i connect via http it works but if i connect via https it doesn`t.
Maybe this helps for debugging

@florianeichincode commented on GitHub (Nov 5, 2020): I have the same problem If i connect via http it works but if i connect via https it doesn`t. Maybe this helps for debugging

kerem commented

2026-02-26 06:33:00 +03:00

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@florianeichincode commented on GitHub (Nov 5, 2020):

Same issue with workarround https://github.com/jc21/nginx-proxy-manager/issues/661

@florianeichincode commented on GitHub (Nov 5, 2020): Same issue with workarround https://github.com/jc21/nginx-proxy-manager/issues/661

kerem commented

2026-02-26 06:33:00 +03:00

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@chaptergy commented on GitHub (May 12, 2021):

Closing in favor of https://github.com/jc21/nginx-proxy-manager/issues/661

@chaptergy commented on GitHub (May 12, 2021): Closing in favor of https://github.com/jc21/nginx-proxy-manager/issues/661

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