Sometimes it happens in pfSense that certificates are created with
duplicated SerialNumbers (for the same CAroot). If any of these certificates
are revoked, and it's in use for openVPN, we will be surprised of having more
revoked certs than the resired. This tool finds those duplicated SerialNumbe
into a non encrypted xml pfSense config backup.
Last change 2017/07/21: New feature: Now it also shows the CRL(s) in which the cert appears.
Get all certificates from a pfSense/OPNsense config file backup to look for possible CRL issues due to duplicated cert serial numbers. Support for encrypted XML files from (pfSense v2.4.4-Release-p3 and earlier), (OPNsense 19.7.4).