IISFortify is a suite of scripts I produce to optimise the configuration of Windows Schannel and IIS. It bolsters cryptographic standards and HTTP response headers. As my workplace is beginning to dip it’s feet in Server 2016 along with IIS 10, it is about time that the scripts for Server 2012 were updated, along with introducing scripts for Server 2016/Windows 10.

 

The changes made in the latest release of IISFortify, version 1.2.0 are as follows:

Weak Ciphers Disabled:
NULL, DES and TDES, RC2 and RC4.

Strong Ciphers Enabled:
AES128 and AES256.

Weak MAC’s Disabled:
MD5 and SHA1.

Strong MAC’s Enabled:
SHA256, SHA384 and SHA512.

Cipher Suite:
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384_P521
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384_P384
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256_P521
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256_P384
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256_P256
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384_P521
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384_P384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P521
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256_P521
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256_P384
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256_P256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P521
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P384
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256

This does, however, have a significant impact on what clients you’ll support. Vista and XP will drop off.

You can find the updated scripts on GitHub.

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