| Attachment | Size |
|---|---|
 CFB-20-08-10 Manufacturer CA Certificate Expiration.pdf | 97.47 KB |
Hi
We noticed an message from one of our providers that on May 2021 we could
have problems with cable modems to complete BPI+ authentication. I attach information
How can I know which is the expiration date of the cable modem certificate?
I am attentive to your responses, Thanks
regards
You can read it from a modem by snmp:
snmpget -v2c -c DOCS-IETF-BPI2-MIB::docsBpi2CmDeviceManufCert.2 | sed -e 's/DOCS.*Hex-STRING: //' | xxd -r -ps | openssl x509 -inform DER -text | grep After
Think I found it here in a earlier post.
If you are familiar with Python, I have a quick and dirty script that will take a list of IP's, and output a CSV with the expiration, firmware, CMAC, model.
Could you please share it?