> For the complete documentation index, see [llms.txt](https://docs.weka.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.weka.io/4.0/usage/security/ca-certificate-management/manage-the-ca-certificate-using-the-cli.md).

# Manage the CA certificate using the CLI

A CA certificate is a digital certificate issued by a certificate authority (CA). The system uses well-known CA certificates to establish trust with external services. For example, when using a KMS. If a different CA certificate is required for Weka servers to establish trust, set this custom CA certificate on the Weka servers.

Use the CLI command:

`weka security ca-cert set`


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