We’ve been encountering a strange anomaly lately. And we need your help urgently.
There’s a standart Vesta CP installed on our Debian powered VDS and Let’s Encrypt SSL is properly configured. Our domain https://old.grantlar.uz (whose DNS is also properly and completely configured) is functioning normally when opened anywhere around the globe, except for Uzbekistan.
Whenever we try to access https://old.grantlar.uz from inside Uzbekistan Chrome (and other majorly used browsers) show ERR_SSL_PROTOCOL_ERROR error. But if you turn on VPN which is based in USA or Europe, the website opens properly and browser shows it as “secure”, which means SSL works perfectly.
We have no clue what is going on and how we can solve this puzzle.
If you have any suggestions or assistance to guide is in setting up our SSL, it would be much appreciated. Also, please check out our dummy page located in https://old.grantlar.uz It should open without any problems AND it should have a browser-trusted SSL certificate.
We thought our domain might be blocked in Uzbekistan and upon request from the VDS host we ran MTR and NMAP tests from both ends: US based VDS to Uzbekistan based computer and vice versa. Results came out fine.
We’re utterly confused and need your help, please.