Cannot Access From Outside Network on ubuntu 22.04

[JunioCalu]

Debugging:

209.14.71.80 - - [19/Jul/2023 06:38:12] code 400, message Bad request syntax ('\x16\x03\x01\x02\x00\x01\x00\x01ü\x03\x03lk\\èõ\x87')
209.14.71.80 - - [19/Jul/2023 06:38:12] "ülk\èõ" 400 -
209.14.71.80 - - [19/Jul/2023 06:42:41] code 400, message Bad request version ('\x00\x02\x01\x00ÿ\x01\x00\x01\x00Di\x00\x05\x00\x03\x02h2\x00-\x00\x02\x01\x01\x00#\x00\x00\x00\x05\x00\x05\x01\x00\x00\x00\x00\x00')
^Æü$Þ FGeËíø3âW- [19/Jul/2023 06:42:41] "üí¥`:½¦
 -àW?Ð2³Ë ?þ1¼òÞò!ÝØÌåû° À+À/À,À0̨̩ÀÀºº
                                         ÿDih2-#" 400 -
209.14.71.80 - - [19/Jul/2023 06:42:41] code 400, message Bad request version ('\x02h2\x08http/1.1\x00')
209.14.71.80 - - [19/Jul/2023 06:42:41] "üc1P.F?
î
 ì ÑÅK§ Sc.îÿ$ï,(ÇÌuA:á
                       T(ã°9ï úúÀ+À/À,À0̨̩ÀÀ::-Dih2
                                                     #
                                                      http/1.1" 400 -

[kanishka-linux]

I'm planning to remove this feature. I haven't tested it for long time, so can't guarantee if there is any security vulnerability or not when accessing server from outside. Will suggest not to use it :)

[JunioCalu]

I'm planning to remove this feature. I haven't tested it for long time, so can't guarantee if there is any security vulnerability or not when accessing server from outside. Will suggest not to use it :)

I would like to know how to remove this external access block, what lines of code should I change? I will configure Authelia authentication server combined with nginx to work with kawaii, so access will be secure in my case.