tls_verify_cert
The `tls_verify_cert` directive enables the verification of TLS certificates in WebAssembly filters.
Description
The tls_verify_cert directive in the Proxy-Wasm module for NGINX is designed to enhance the security and integrity of HTTPS connections by allowing WebAssembly (Wasm) filters to verify TLS certificates when interacting with upstream services. When this directive is set, NGINX will enforce certificate verification, ensuring that the server’s certificates are valid and trusted. This is crucial in preventing man-in-the-middle attacks and other security vulnerabilities that can arise from invalid or untrusted TLS certificates.
By utilizing the tls_verify_cert directive, developers can specify specific certificate verification requirements corresponding to their application needs. This can include checking for certificate expiry, confirmation against a certificate authority, and more. The directive operates within the context of the NGINX WebAssembly subsystem and is particularly useful for service mesh frameworks or when integrating with external services that leverage TLS for secure communication. As part of its functionality, it ensures that only trusted connections are established, thereby increasing the security around data in transit.
As a key directive in the toolkit available for Wasm developers, tls_verify_cert enhances the capabilities of NGINX in modern web architectures that depend on service-to-service communication over secure channels. Its integration into the WebAssembly runtime environment allows developers to write customizable logic related to certificate verification, thereby adapting the behavior of NGINX to fit their specific application requirements.
Config Example
wasm {
module my_filter /path/to/filter.wasm;
tls_verify_cert on;
}Ensure that your WebAssembly module is capable of handling the certificate verification logic appropriately.
Be aware that enabling certificate verification can introduce latency into your requests if the verification process is time-consuming or relies on external services.