Is IIS crypto safe?

Is IIS crypto safe?

Since the tool is developed by a 3rd party, Microsoft has no responsibility for this app. The use of the tool is under your risk and for any issue caused by the tool you should contact software developer.

What is IIS crypto tool?

IIS Crypto is a free tool that gives administrators the ability to enable or disable protocols, ciphers, hashes and key exchange algorithms on Windows Server 2008, 2012, 2016 and 2019.

How do I disable weak SSL protocols and ciphers in IIS?

Disable SSLv3:

  1. go to HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 3.0\Server ; create the key if it does not exist.
  2. make sure that DWORD value Enabled exists and is set it to 0.
  3. make sure that DWORD value DisabledByDefault (if exists) is set it to 1.

How do I turn off RSA encryption?

To disable the RSA key exchange ciphers you have to specify the ciphers that Windows should use by performing the following steps:

  1. At a command prompt, type gpedit.
  2. Expand Computer Configuration, Administrative Templates, Network, and then click SSL Configuration Settings.

What version of TLS is IIS using?

Enter the URL you wish to check in the browser. Right-click the page or select the Page drop-down menu, and select Properties. In the new window, look for the Connection section. This will describe the version of TLS or SSL used.

What are weak ciphers?

A weak cipher is defined as an encryption/decryption algorithm that uses a key of insufficient length. Using an insufficient length for a key in an encryption/decryption algorithm opens up the possibility (or probability) that the encryption scheme could be broken (i.e. cracked).

Why is TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 weak?

Shall I know why TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 being treated as weak? When did it become weak? Thanks. Due to the difficulties in implementing CBC cipher suites, and the numerous known exploits against bugs in specific implementations, Qualys SSL Labs began marking all CBC cipher suites as WEAK in May 2019.

Is 3DES insecure?

In general, Triple DES with three independent keys (keying option 1) has a key length of 168 bits (three 56-bit DES keys), but due to the meet-in-the-middle attack, the effective security it provides is only 112 bits. This can be considered insecure, and, as consequence Triple DES has been deprecated by NIST in 2017.

Why is TLS 1.1 not secure?

The existence of TLS 1.0 and 1.1 on the internet acts as a security risk. Clients using these versions are suffering from their shortcomings, while the rest of the internet is vulnerable to various attacks exploiting known vulnerabilities, for almost no practical benefit.

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