Server certificate support matrix on the ADC appliance

From release 13.0 build 41.x, the Citrix ADC appliance supports server certificate messages that are fragmented into more than one record so long as the total size is within 32 KB. Earlier, the maximum supported size was 16 KB and fragmentation was not supported.

The Citrix ADC appliance supports the following server certificates.

Table 1: Support on front-end (FE) and back-end (BE) service

Server certificate/Platform MPX/SDX (N2 CHIPS) FE MPX/SDX (N2 CHIPS) BE MPX/SDX (N3 CHIPS) FE MPX/SDX (N3 CHIPS) BE VPX FE VPX BE
MD5 Y Y Y Y Y Y
SHA1 Y Y Y Y Y Y
SHA224 Y Y Y Y Y Y
SHA256 Y Y Y Y Y Y
SHA384 Y Y Y Y Y Y
SHA512 Y Y Y Y Y Y
RSA Key 1024, 2048, 3072, and 4096 bits 1024, 2048, 3072, and 4096 bits 1024, 2048, 3072, and 4096 bits 1024, 2048, 3072, and 4096 bits 1024, 2048, 3072, and 4096 bits 1024, 2048, 3072, and 4096 bits
DH Key 1024 bits and 2048 bits 1024 bits and 2048 bits 1024 bits and 2048 bits 1024 bits and 2048 bits 1024, 2048, 3072, and 4096 bits 1024, 2048, 3072, and 4096 bits
Server certificate/Platform MPX 9700/10500/12500/15500 FIPS with FW 2.2 FE MPX 9700/10500/12500/15500 FIPS with FW 2.2 BE MPX/SDX 14030/14060/14080 FIPS FE MPX/SDX 14030/14060/14080 FIPS BE
MD5 Y Y Y Y
SHA1 Y Y Y Y
SHA224 Y Y Y Y
SHA256 Y Y Y Y
SHA384 Y Y Y Y
SHA512 Y Y Y Y
RSA Key 2048 bits 2048 bits 2048 and 3072 bits 2048 and 3072 bits
DH Key N N N N

Note:

  • In release 11.1 and earlier, a Citrix ADC appliance supports the following “signature algorithms” extensions in the back end client hello message: RSA-MD5, RSA-SHA1, and RSA-SHA256. Because the Citrix ADC appliance does not support SHA 384 and SHA 512 signature algorithms extensions, some servers, such as Windows IIS servers, reset the connection.

  • Starting release 12.0, a Citrix ADC appliance supports all the signature_algorithms extensions.

Server certificate support matrix on the ADC appliance