What is it used for and what happens when it is enabled? What is the impact to users and is there anything else in the network that has to be done for it to not impact users? From what I have read so far, it is an encryption mode, but for what and how does it work for the Web Security?
FIPS is Federal Information Processing Standards that specify requirements for cryptographic modules that are used by all government agencies to protect sensitive but unclassified information. FIPS help ensure compliance with federal security and data privacy requirements. FIPS, developed by the National Institute for Standards and Technology (NIST), are to use when no voluntary standards exist to meet federal requirements.
FIPS mode requires that all enabled encryption services on the Web Security appliance use a FIPS-compliant certificate. This applies to the following encryption services:
•Identity Provider for SaaS
•Appliance Management HTTPS Service
Note The Appliance Management HTTPS Service must be enabled before FIPS mode can be enabled. The other encryption services need not be enabled.
A FIPS-compliant certificate must meet these requirements:
Bit Key Size
1024, 2048, 3072, or 4096
Cisco recommends a bit key size of 1024 for best decryption performance and sufficient security. A larger bit size will increase security, but impact decryption performance.
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