I will security harden your servers

Server Security Hardening securing a server by reducing its attack surface that means disabling or tightening anything unnecessary or potentially exploitable. Its an essential part of cybersecurity and compliance (like SOC 2, ISO 27001, CIS, etc.).

 server hardening applicable to both Linux and Windows Server environments.

1. OS-Level Hardening

General

Keep OS and software fully updated (enable automatic or scheduled patching).

Use minimal installation (only required roles, services, and packages).

Disable unused network interfaces, devices, and modules.

Set strong password policies (complexity, history, lockout).

Use multi-factor authentication (MFA) for admin/root access.

 Windows

Disable SMBv1 and legacy protocols (NetBIOS, LLMNR).

Enforce Windows Defender Firewall and Controlled Folder Access.

Enable BitLocker for full disk encryption.

Linux

Disable root login over SSH.

Change SSH port (optional) and use key-based authentication.

Configure sudoers securely restrict administrative privileges.

Use SELinux or AppArmor for mandatory access control