If you enable the FIPS mode, the following settings are simultaneously changed.
If the IPsec encryption/authentication algorithm is outside the FIPS standard, IPsec turns off.
If [E-Mail Text Encrypt. Method] of S/MIME is outside the FIPS standard, it changes to AES-128.
If the SNMP v3 authentication algorithm is outside the FIPS standard, it changes to SHA-256.
TCP Sockets is turned off.