Checking the settings of a server and solving possible problems

Job ID: 35506050

Budget: $50 – $100 USD

We have a problem with our web application
The website opens for some users
But it does not open for some users
This means that the request does not reach the server and nothing is loaded for the user, and we do not receive any logs and do not understand what the problem is.
We tested the service on CloudFlyer and without it, and this problem existed
We use NGNIX
Our operating system is Ubuntu
We do not use any CMS
We feel that the problem is with the firewall or NGNIX configuration.
If you are very experienced and you can definitely solve the problem, please send a suggestion, thank you
Related categories: System Admin Linux Nginx Ubuntu Firewall