It is a set of cryptographic algorithms. It defines how the server and client will securely exchange keys, encrypt the data, and verify the message integrity during a TLS connection.

The server reads the cipher list from top to bottom. It will negotiate the connection using the first cipher in your list that the connecting client (browser) also supports.

The Modern profile completely drops support for legacy browsers and older devices. It enforces Perfect Forward Secrecy (ECDHE) and strong GCM authenticated encryption.

It maintains high security but leaves a few older CBC ciphers at the bottom of the list to ensure legacy applications (like older Android devices or Java clients) can still connect.

Windows Server 2022 introduced native support for TLS 1.3, which utilizes vastly simplified and highly secure ciphers (e.g., TLS_AES_256_GCM_SHA384) that older Windows versions do not recognize.

Yes. The script immediately executes a `reg export` command to safely back up the `SSL\00010002` registry path to your C:\ drive before making any changes.

Absolutely not. RC4 and 3DES are deeply flawed legacy ciphers vulnerable to attacks (like SWEET32). This generator permanently strips them from your server.

Yes. Windows caches cryptographic policies in memory. You must perform a full system restart for the new cipher suite order to take effect.

Modifying cipher suites on Domain Controllers can break Active Directory replication if older Windows Server versions exist in your forest. Use extreme caution and test thoroughly.

After running the script and rebooting, use an external tool like the Qualys SSL Labs Server Test. Your server should now score an 'A' grade.