GlobalSCAPE Secure FTP Server can import certificates in the following formats:
PEM or Base64 Encoded X509 (*.cer, *.crt)
DER Encoded X509 (*.cer)
PKCS#7 (*.p7b)
PKCS#12 (*.pfx)
Create a certificate while remotely administering
Export a certificate from the Trusted Certificate Database
Import a certificate into the Trusted Certificate Database