Let us learn more about the feature HAProxy backend SSL verify none with the support of our Server management support services at Bobcares.

What is HAProxy backend SSL verify none?

The HAProxy configuration option “backend ssl verify none” disables SSL certificate verification for backend servers that employ SSL/TLS encryption.

This implies that when HAProxy connects to a backend server using SSL/TLS, it does not validate the server’s SSL certificate, potentially making the connection less secure.

When using SSL/TLS to communicate with a backend server, the server offers its SSL certificate to HAProxy to establish its identity.

HAProxy checks the SSL certificate supplied by the server by default to guarantee that it is genuine and issued by a trustworthy Certificate Authority (CA). HAProxy will deny the connection if the SSL certificate cannot be confirmed.

How to disable the HAProxy backend SSL verify none?

In some cases, we may want to stop SSL certificate verification for a specific backend server.

For example, if we are testing a new backend server, or if the server’s SSL certificate is self or not given by a reputable CA, we might have to temporarily stop certificate verification.

In HAProxy, we may deactivate SSL certificate verification for a backend server by using the “backend SSL verify none” option in the backend settings.

Sample configuration block::

backend mybackend server myserver 192.168.1.10:443 ssl verify none

To deactivate SSL certificate verification for the “myserver” backend server, the “ssl verify none” option adds to the server configuration line in this example.

HAProxy will not validate the server’s SSL certificate when connecting to it over SSL/TLS.

It is crucial to remember that deactivating SSL certificate verification might make the connection less secure and use it only if necessary.

In general, SSL certificate checking can protect the security and integrity of SSL/TLS communications between HAProxy and backend servers.

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Conclusion

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