How to protect VPS from brute force?

Question

JavaScript

Hello. There is a VPS, under ubuntu, it runs some programs by connecting to two addresses in the internet. How to close the login to the server so that it was not possible to log into the server, even for me?

Answer 1

Something seems to have worked out:
https://codepen.io/workcode/pen/zYYxWGe
works without any double-click checks

Answer 2

there are 2
debounce mechanisms: the first click performs an action and sets a timer and cuts off repeated clicks
throttle : a timer is set on a click, each subsequent timer resets the timer, the action is performed by a timer.

Answer 3

How to close the login to the server so that it was not possible to log into the server, even for me?

find string and match:
Or create a new user as root

# useradd -ou 0 -g 0 john
# passwd john

Next change root shell
change
to
And of course install fail2ban

Answer 4

Fail2ban?

Answer 5

uwf

Answer 6

fail2ban - get rid of brute force (password brute force).
Disabling services, iptables - if you need to completely isolate all connections.
To reduce the possible impact - stop using root and forbid it to connect via SSH (at least).

Answer 7

You can just change the port. That's how it is on my servers. There are no brute force attempts 100%. I will do it on your server https://kwork.ru/server-administration/192357/zash...