The aim of server hardening is to reduce the attack surface of the server. The attack surface is all the different points where an attacker can to attempt to access or damage the server.
It is rarely a good idea to try to invent something new when attempting to solve a security or cryptography problem.
The goal of sever hardening is to remove all unnecessary components and access to the server in order to maximise its security.
1st Floor, Plot no. 4, Lane no. 2, Kehar Singh Estate Westend Marg Behind Saket Metro Station Saidulajab, New Delhi – 110030