Basic authentication

Q: How deeply does Acing the CCNA Exam: Volume 2 Advanced Networking and Security cover basic authentication?

Defines the request mechanism and security limitation, but stops short of implementation commands or protocol internals.

As explained in Acing the CCNA Exam: Volume 2 Advanced Networking and Security

Basic authentication is an HTTP authentication method that transmits a username and password in an HTTP header, typically encoded but not inherently encrypted.

Basic authentication authenticates REST API requests by placing a username and password in the HTTP header. It is simple to implement but insecure when credentials travel over standard HTTP. section 23.3.2

Use basic authentication with these operational constraints:

Protect API calls with HTTPS; standard HTTP sends the credentials in unencrypted cleartext. section 23.3.2
Treat stolen credentials as a direct access risk because an attacker can use them to reach the API. section 23.3.2
Distinguish it from bearer authentication, API key authentication, and OAuth 2.0, which provide alternative request-authentication approaches. section 23.4

Protected API request

A client includes a username and password in an HTTP header when requesting an API resource. The server authenticates the request and either fulfills it or refuses it for invalid credentials or insufficient permissions; HTTPS protects the transmission. section 23.3.2

How Acing the CCNA Exam: Volume 2 Advanced Networking and Security covers it

Cover of Acing the CCNA Exam: Volume 2 Advanced Networking and Security

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Also explained in

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Spring Security in Action, Second EditionHTTP Basic authentication is an HTTP authentication scheme that transmits a username and password using an Authorization header value containing Base64-encoded credentials.
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Logs and TelemetryBasic authentication is an HTTP authentication scheme that transmits a username and password in an encoded authorization header.

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Related concepts

OAuthalternative to · OAuth is an authorization framework that enables a client to obtain limited, delegated access to protected resources without receiving the resource owner's credentials.
Actuator endpointconfigures · An Actuator endpoint is a Spring Boot Actuator management interface that exposes operational data or operations through supported communication mechanisms.
bearer authenticationcontrasts with · Bearer authentication is an authentication scheme in which presenting a bearer token is sufficient to use the access or authorization granted by that token.
HTTPSuses · HTTPS is HTTP carried over TLS, which provides encryption and endpoint authentication for network communication.
password authenticationuses · Password authentication is an authentication method that verifies a claimed identity or access by checking a supplied secret password or passphrase.
RESTused by · REST is an architectural style for distributed hypermedia systems that organizes interactions around resources and representations through constraints including a uniform interface, stateless communication, cacheability, and layered components.

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 2 Advanced Networking and Security. The section links point to the parts of the book it draws on.