Forum Discussion

Nandhi

Cirrus

Jun 16, 2023

Thumbprint of the client ssl certificate

Hello Everyone, is there any bash or tmsh command to get thumbprint value of the big-ip client ssl certificate? Thanks

application delivery

Paulius
Jun 19, 2023
Nandhi It is important to know if you would like to know these fingerprints for the GUI SSL cert of the Client SSL Profile because they are in different directories. Without knowing which the following are the two different paths assuming you are using the default partition on it as well. You can find those by logging into the CLI of the F5, then into the linux shell by typing "bash", and finally going to the following path and running the command below that.

*** Client SSL Profile directory ***
/config/filestore/files_d/Common_D/certificate_d/
*** F5 GUI SSL Cert directory ***
/config/httpd/conf/ssl.crt/

*** Client SSL Profile ***
openssl x509 -noout -fingerprint -sha256 -inform -pem -in \:Common\:example.com
openssl x509 -noout -fingerprint -sha1 -inform -pem -in \:Common\:example.com
*** F5 GUI SSL ***
openssl x509 -noout -fingerprint -sha256 -inform -pem -in server.crt
openssl x509 -noout -fingerprint -sha1 -inform -pem -in server.crt

Paulius
MVP
Jun 16, 2023
Nandhi Are you referring to a cert in a client ssl profile or the SSL cert and key that are used for the GUI? This existing post might assist you.

https://community.f5.com/t5/technical-forum/piping-v15-expired-certificate-in-use-listing-to-text-from-cli/m-p/316942#M269238
Nandhi
Cirrus
Jun 19, 2023
Thanks for the reply Paulius. Its for client ssl cert only. I wish to check both Sha1 and Sha256 thumbprint value of client ssl cert (Signed by cert authority) in Big-ip cli.

Thanks.
- Paulius
  MVP
  Jun 19, 2023
  Nandhi It is important to know if you would like to know these fingerprints for the GUI SSL cert of the Client SSL Profile because they are in different directories. Without knowing which the following are the two different paths assuming you are using the default partition on it as well. You can find those by logging into the CLI of the F5, then into the linux shell by typing "bash", and finally going to the following path and running the command below that.
  
  *** Client SSL Profile directory ***
  /config/filestore/files_d/Common_D/certificate_d/
  *** F5 GUI SSL Cert directory ***
  /config/httpd/conf/ssl.crt/
  
  *** Client SSL Profile ***
  openssl x509 -noout -fingerprint -sha256 -inform -pem -in \:Common\:example.com
  openssl x509 -noout -fingerprint -sha1 -inform -pem -in \:Common\:example.com
  *** F5 GUI SSL ***
  openssl x509 -noout -fingerprint -sha256 -inform -pem -in server.crt
  openssl x509 -noout -fingerprint -sha1 -inform -pem -in server.crt
  - Nandhi
    Cirrus
    Jun 21, 2023
    Thanks Paulius.
    After openup the directory and running the command for client ssl, getting below error.
    -bad input format specified for Certificate
    Unable to load certificate-.
    I checked for GUI SSL cert too but same error. I am running with 14.1.5 series version.
    Command:
    /config/filestore/files_d/Common_D/certificate_d/
    openssl x509 -noout -fingerprint -sha256 -inform -pem -in \:Common\:<cert_Name>
    openssl x509 -noout -fingerprint -sha1 -inform -pem -in \:Common\:<cert_Name>
    Wondering is this firmware issue or anything I missed here.