Cato Networks Knowledge Base

How to install Cato Certificate on Linux (Ubuntu)

Here are the steps to download, convert and install the Cato Networks SSL certificate on Ubuntu.

1. sudo mkdir /usr/local/share/ca-certificates/Cato
2. sudo chmod 755 /usr/local/share/ca-certificates/Cato
3. cd /usr/local/share/ca-certificates/Cato;sudo wget --no-check-certificate '' 
Note: #3 is a single line command with a single space between --no-check-certificate and the URL.
4. sudo openssl x509 -outform der -in CatoNetworksTrustedRootCA.pem -out CatonetworksTrustededRootCA.crt
5. sudo rm -f CatoNetworksTrustedRootCA.pem
6. sudo update-ca-certificates

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  • Comment author
    Doron Volkovich

    In Fedora Core / CentOS / RHEL (ver 7.0 and above the location for the *.pem/*.cer files is /etc/pki/ca-trust/source/anchors (the command to update the root CA is update-ca-trust there.

    The pre 7.0 RHEL location is /usr/local/share/ca-certificates.

    It could be also relevant for Scientific Linux / SLES (Suse Linux Enterprise Server) / OEL (Oracle Enterprise Linux) as they also belong to the RPM family.


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