How to Filter Unnecessary POST Requests When Using the NGINX Module?
Issue: Unnecessary POST requests can be scanned when using the NGINX module, potentially impacting performance.
Resolution: Filter unnecessary POST requests by defining location matches in the NGINX configuration. This allows selective scanning while bypassing specific paths.
Configuration Example:
To scan all requests except /o/oauth2/token and /c/portal/saml/acs, use the following configuration in the nginx.conf file located in /etc/nginx/nginx.conf
load_module /etc/nginx/modules/ngx_http_ometascan_module.so;http { client_max_body_size 1000M; server { listen 80; server_name localhost; location ~ ^\/(o\/oauth2\/token|c\/portal\/saml\/acs)$ { proxy_pass <http://server_back_end_server.domain:8000;> } location / { ometascan_pass <http://icap_server.domain:8043;> ometascan_methods POST; ometascan_read_timeout 1d; proxy_pass <http://server_back_end_server.domain:8000;> } }}Workarounds: The following tool can be used to verify location configuration: <https://nginx.viraptor.info/>
Related Articles:
Also, the following tool can be used to verify location config: https://nginx.viraptor.info/
There are more details on the following links: Module ngx_http_core_module and Guide on how to use regex in Nginx location block section?
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