[Bug 1964122] [NEW] Cannot connect to router with admin page over TLS v1.0

[psl]

Public bug reported:

firefox-97.0.2+linuxmint1+tricia

I cannot connect to web interface of my old router that is on local LAN.
It supports only TLS v1.0 and support for TLS v1.0 & 1.1 was removed in
Firefox v97... I know I should replace my router with some better
device, I already tried several times but new devices had other issues,
I always returned back to my old router... I do not think that it is
real security risk to have TLS v1.0 interface on local LAN...

Any idea how to connect to a device with TLS v1.0? Any idea for a
workaround? Maybe some proxy, or other browser, etc... I already tried
Chromium browser but it is the same, I cannot connect with TLSv1.0. Do I
really need to run old PC with W2k to manage my router?? ;-)

---

https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-
did-not-connect?as=u&utm_source=inproduct#w_tls-version-unsupported

Note: The option to enable TLS 1.0 and 1.1 has been removed from the
error page in Firefox version 97.

---

Router supports TLS v1.0 only:

$ curl -v -s --tlsv1.0 https://192.168.222.1:445
* Rebuilt URL to: https://192.168.222.1:445/
*   Trying 192.168.222.1...
* TCP_NODELAY set
* Connected to 192.168.222.1 (192.168.222.1) port 445 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.0 (OUT), TLS handshake, Client hello (1):
* TLSv1.0 (IN), TLS handshake, Server hello (2):
* TLSv1.0 (IN), TLS handshake, Certificate (11):
* TLSv1.0 (OUT), TLS alert, Server hello (2):
* SSL certificate problem: self signed certificate
* stopped the pause stream!
* Closing connection 0

$ curl -v -s --tlsv1.1 https://192.168.222.1:445
* Rebuilt URL to: https://192.168.222.1:445/
*   Trying 192.168.222.1...
* TCP_NODELAY set
* Connected to 192.168.222.1 (192.168.222.1) port 445 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.1 (OUT), TLS handshake, Client hello (1):
* TLSv1.1 (IN), TLS handshake, Server hello (2):
* TLSv1.1 (OUT), TLS alert, Server hello (2):
* error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol
* stopped the pause stream!
* Closing connection 0

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1964122

Title:
  Cannot connect to router with admin page over TLS v1.0

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