There are several means of prevention against the injection of HTTP code, which include:
1. Input Validation: This involves verifying user input before processing or using it. Validation can be done on both client-side and server-side, and it ensures that any input received meets expected standards.
1. Parameterized Queries: This involves using parameters in SQL statements to prevent SQL injection attacks. Parameterized queries ensure that any input received is treated as data, not as code.
1. Firewall Configuration: Firewalls can be configured to monitor incoming traffic and block any malicious requests that contain HTTP code injection attempts.
1. Content Security Policy (CSP): CSP is a security standard that allows web administrators to specify which sources of content are allowed to be loaded on a web page. This can help prevent the injection of malicious content.
The technical process of preventing HTTP code injection involves implementing one or more of the above methods. Input validation is typically done using scripts that check for valid characters and patterns in user input. Parameterized queries involve modifying SQL statements to accept input as parameters, rather than as part of the query string. Firewall configuration and CSP involve setting up rules and policies that block incoming traffic containing suspicious or malicious HTTP code.