TLS mode
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TLS encryption mode. When using TLS encryption, you cannot specify an IP address in the URL field on the Basic settings. Available values:
- Disabled means TLS encryption is not used. This value is selected by default.
- Enabled means TLS encryption is used, but certificates are not verified.
- With verification means TLS encryption is used with verification of the certificate signed with the KUMA root certificate. The root certificate and key of KUMA are created automatically during application installation and are stored on the KUMA Core server in the /opt/kaspersky/kuma/core/certificates/ directory.
- Custom CA means TLS encryption is used with verification that the certificate was signed by a Certificate Authority. If you select this value, in the Custom CA drop-down list, specify a secret with a certificate signed by a certification authority. You can select an existing secret or create a new secret. To create a new secret, select Create new.
If you want to edit the settings of an existing secret, click the pencil icon next to it. How to create a certificate signed by a Certificate Authority? You can create a CA-signed certificate on the KUMA Core server (the following command examples use OpenSSL).
To create a certificate signed by a Certificate Authority:
- Generate a key to be used by the Certificate Authority, for example:
openssl genrsa -out ca.key 2048 - Create a certificate for the generated key, for example:
openssl req -new -x509 -days 365 -key ca.key -subj "/CN=< common host name of Certificate Authority >" -out ca.crt - Create a private key and a request to have it signed by the Certificate Authority, for example:
openssl req -newkey rsa:2048 -nodes -keyout server.key -subj "/CN=< common host name of KUMA server >" -out server.csr - Create the certificate signed by the Certificate Authority. You need to include the domain names or IP addresses of the server for which you are creating the certificate in the
subjectAltName variable, for example:openssl x509 -req -extfile <(printf "subjectAltName=DNS:domain1.ru,DNS:domain2.com,IP:192.168.0.1") -days 365 -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out server.crt - Upload the created
server.crt certificate in the KUMA web interface to a secret of the certificate type, then in the Custom CA drop-down list, select the secret of the certificate type.
To use KUMA certificates on third-party devices, you must change the certificate file extension from CERT to CRT. Otherwise, you can get the x509: certificate signed by unknown authority error. - Custom PFX means TLS encryption with a PFX secret. You must generate a PFX certificate with a private key in PKCS#12 container format in an external Certificate Authority, export the PFX certificate from the key store, and upload the PFX certificate to the KUMA web interface as a PFX secret. If you select this value, in the PFX secret drop-down list, specify a PFX secret with a certificate signed by a certification authority. You can select an existing PFX secret or create a new PFX secret. To create a new PFX secret, select Create new.
If you want to edit the settings of an existing secret, click the pencil icon next to it. How to create a PFX secret? To create a PFX secret:
- In the Name field, enter the name of the PFX secret.
- Click Upload PFX and select the PKCS#12 container file to which you exported the PFX certificate with the private key.
- In the Password field, enter the PFX certificate security password that was set in the PFX Certificate Export Wizard.
- Click the Create button.
The PFX secret is created and displayed in the PFX secret drop-down list.
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