The Pulse Connect Secure gateway supports X.509 device certificates in DER and PEM formats (file extensions include .cer, .crt, .der, and .pem), as well as PKCS #12 (for non-fips devices; file extensions include .pfx and .p12).
Other file formats (such as .p7b, which follows PKCS#7) are not supported on the Pulse Connect Secure gateway.
Unsupported device certificate formats have to be converted to a supported format.
For help changing certificate file format, use an SSL Converter.