# Courses Notes - [Practical Networking](https://blog.syselement.com/home/courses-notes/practical-networking.md) - [Practical TLS](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls.md): Practical TLS by PracticalNetworking.net - a deep dive into SSL and TLS - [TLS/SSL Overview](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/1-tls-ssl.md) - [Cryptography](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/2-cryptography.md) - [x509 Certificates and Keys](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/3-x509-certificates-keys.md) - [Security through Certificates](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/4-security-certificates.md) - [Cipher Suites](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/5-cipher-suites.md) - [TLS/SSL Handshake](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/6-tls-ssl-handshake.md) - [TLS Defenses](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/7-tls-defenses.md) - [TLS Attacks & Vulnerabilities](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/8-tls-attacks-vulns.md) - [What's new in TLS 1.3?](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/9-tls-1-3-intro.md) - [TLS 1.3 Under the Hood](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/10-tls-1-3.md) - [TLS 1.3 Extensions](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/11-tls-1-3-extensions.md) - [Practical TLS References](https://blog.syselement.com/home/courses-notes/practical-networking/practical-tls/practicaltls-references.md) - [TCM Security](https://blog.syselement.com/home/courses-notes/tcmsecurity.md): Direct links to the certifications and training notes --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://blog.syselement.com/home/courses-notes.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.