diff --git a/docs/modules/ROOT/pages/servlet/authentication/passwords/index.adoc b/docs/modules/ROOT/pages/servlet/authentication/passwords/index.adoc
index eaff4cdb1e..525c10c548 100644
--- a/docs/modules/ROOT/pages/servlet/authentication/passwords/index.adoc
+++ b/docs/modules/ROOT/pages/servlet/authentication/passwords/index.adoc
@@ -7,3 +7,529 @@
One of the most common ways to authenticate a user is by validating a username and password.
Spring Security provides comprehensive support for authenticating with a username and password.
+You can configure username and password authentication using the following:
+
+.Simple Username/Password Example
+[tabs]
+=====
+Java::
++
+[source,java,role="primary"]
+----
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+ @Bean
+ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+ http
+ .authorizeHttpRequests((authorize) -> authorize
+ .anyRequest().authenticated()
+ )
+ .httpBasic(Customizer.withDefaults())
+ .formLogin(Customizer.withDefaults());
+
+ return http.build();
+ }
+
+ @Bean
+ public UserDetailsService userDetailsService() {
+ UserDetails userDetails = User.withDefaultPasswordEncoder()
+ .username("user")
+ .password("password")
+ .roles("USER")
+ .build();
+
+ return new InMemoryUserDetailsManager(userDetails);
+ }
+
+}
+----
+
+XML::
++
+[source,xml,role="secondary"]
+----
+
+
+
+
+
+
+
+
+
+----
+
+Kotlin::
++
+[source,kotlin,role="secondary"]
+----
+import org.springframework.security.config.annotation.web.invoke
+
+@Configuration
+@EnableWebSecurity
+class SecurityConfig {
+
+ @Bean
+ fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
+ http {
+ authorizeHttpRequests {
+ authorize(anyRequest, authenticated)
+ }
+ formLogin { }
+ httpBasic { }
+ }
+
+ return http.build()
+ }
+
+ @Bean
+ fun userDetailsService(): UserDetailsService {
+ val user = User.withDefaultPasswordEncoder()
+ .username("user")
+ .password("password")
+ .roles("USER")
+ .build()
+
+ return InMemoryUserDetailsManager(user)
+ }
+
+}
+----
+=====
+
+The preceding configuration automatically registers an xref:servlet/authentication/passwords/in-memory.adoc[in-memory `UserDetailsService`] with the `SecurityFilterChain`, registers the xref:servlet/authentication/passwords/dao-authentication-provider.adoc[`DaoAuthenticationProvider`] with the default xref:servlet/authentication/architecture.adoc#servlet-authentication-authenticationmanager[`AuthenticationManager`], and enables xref:servlet/authentication/passwords/form.adoc[Form Login] and xref:servlet/authentication/passwords/basic.adoc[HTTP Basic] authentication.
+
+To learn more about username/password authentication, consider the following use cases:
+
+* I want to <> for custom authentication
+* I want to <>
+* I want to xref:servlet/authentication/passwords/form.adoc[learn how Form Login works]
+* I want to xref:servlet/authentication/passwords/basic.adoc[learn how HTTP Basic authentication works]
+* I want to xref:servlet/authentication/passwords/basic.adoc[learn how `DaoAuthenticationProvider` works]
+* I want to xref:servlet/authentication/passwords/in-memory.adoc[manage users in memory]
+* I want to xref:servlet/authentication/passwords/jdbc.adoc[manage users in a database]
+* I want to xref:servlet/authentication/passwords/ldap.adoc#servlet-authentication-ldap-authentication[manage users in LDAP]
+
+[[publish-authentication-manager-bean]]
+== Publish an `AuthenticationManager` bean
+
+A fairly common requirement is publishing an `AuthenticationManager` bean to allow for custom authentication, such as in a `@Service` or Spring MVC `@Controller`.
+For example, you may want to authenticate users via a REST API instead of using xref:servlet/authentication/passwords/form.adoc[Form Login].
+
+You can publish such an `AuthenticationManager` for custom authentication scenarios using the following configuration:
+
+.Publish `AuthenticationManager` bean for Custom Authentication
+[tabs]
+=====
+Java::
++
+[source,java,role="primary"]
+----
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+ @Bean
+ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+ http
+ .authorizeHttpRequests((authorize) -> authorize
+ .requestMatchers("/login").permitAll()
+ .anyRequest().authenticated()
+ );
+
+ return http.build();
+ }
+
+ @Bean
+ public AuthenticationManager authenticationManager(
+ UserDetailsService userDetailsService,
+ PasswordEncoder passwordEncoder) {
+ DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
+ authenticationProvider.setUserDetailsService(userDetailsService);
+ authenticationProvider.setPasswordEncoder(passwordEncoder);
+
+ return new ProviderManager(authenticationProvider);
+ }
+
+ @Bean
+ public UserDetailsService userDetailsService() {
+ UserDetails userDetails = User.withDefaultPasswordEncoder()
+ .username("user")
+ .password("password")
+ .roles("USER")
+ .build();
+
+ return new InMemoryUserDetailsManager(userDetails);
+ }
+
+ @Bean
+ public PasswordEncoder passwordEncoder() {
+ return PasswordEncoderFactories.createDelegatingPasswordEncoder();
+ }
+
+}
+----
+
+XML::
++
+[source,xml,role="secondary"]
+----
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+----
+
+Kotlin::
++
+[source,kotlin,role="secondary"]
+----
+@Configuration
+@EnableWebSecurity
+class SecurityConfig {
+
+ @Bean
+ fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
+ http {
+ authorizeHttpRequests {
+ authorize(anyRequest, authenticated)
+ }
+ }
+
+ return http.build()
+ }
+
+ @Bean
+ fun authenticationManager(
+ userDetailsService: UserDetailsService,
+ passwordEncoder: PasswordEncoder): AuthenticationManager {
+ val authenticationProvider = DaoAuthenticationProvider()
+ authenticationProvider.setUserDetailsService(userDetailsService)
+ authenticationProvider.setPasswordEncoder(passwordEncoder)
+
+ return ProviderManager(authenticationProvider)
+ }
+
+ @Bean
+ fun userDetailsService(): UserDetailsService {
+ val user = User.withDefaultPasswordEncoder()
+ .username("user")
+ .password("password")
+ .roles("USER")
+ .build()
+
+ return InMemoryUserDetailsManager(user)
+ }
+
+ @Bean
+ fun passwordEncoder(): PasswordEncoder {
+ return PasswordEncoderFactories.createDelegatingPasswordEncoder()
+ }
+
+}
+----
+=====
+
+With the preceding configuration in place, you can create a `@RestController` that uses the `AuthenticationManager` as follows:
+
+
+.Create a `@RestController` for Authentication
+[tabs]
+=====
+Java::
++
+[source,java,role="primary"]
+----
+@RestController
+public class LoginController {
+
+ private final AuthenticationManager authenticationManager;
+
+ public LoginController(AuthenticationManager authenticationManager) {
+ this.authenticationManager = authenticationManager;
+ }
+
+ @PostMapping("/login")
+ public ResponseEntity login(@RequestBody LoginRequest loginRequest) {
+ Authentication authenticationRequest =
+ UsernamePasswordAuthenticationToken.unauthenticated(loginRequest.username(), loginRequest.password());
+ Authentication authenticationResponse =
+ this.authenticationManager.authenticate(authenticationRequest);
+ // ...
+ }
+
+ public record LoginRequest(String username, String password) {
+ }
+
+}
+----
+
+Kotlin::
++
+[source,kotlin,role="secondary"]
+----
+@RestController
+class LoginController(val authenticationManager: AuthenticationManager) {
+
+ @PostMapping("/login")
+ fun login(@RequestBody loginRequest: LoginRequest): ResponseEntity {
+ val authenticationRequest =
+ UsernamePasswordAuthenticationToken.unauthenticated(
+ loginRequest.username, loginRequest.password)
+ val authenticationResponse =
+ authenticationManager.authenticate(authenticationRequest)
+ // ...
+ }
+
+ data class LoginRequest(val username: String, val password: String)
+
+}
+----
+=====
+
+[NOTE]
+====
+In this example, it is your responsibility to save the authenticated user in the `SecurityContextRepository` if needed.
+For example, if using the `HttpSession` to persist the `SecurityContext` between requests, you can use xref:servlet/authentication/persistence.adoc#httpsecuritycontextrepository[`HttpSessionSecurityContextRepository`].
+====
+
+[[customize-global-authentication-manager]]
+== Customize the `AuthenticationManager`
+
+Normally, Spring Security builds an `AuthenticationManager` internally composed of a `DaoAuthenticationProvider` for username/password authentication.
+In certain cases, it may still be desired to customize the instance of `AuthenticationManager` used by Spring Security.
+For example, you may need to simply disable xref:servlet/authentication/architecture.adoc#servlet-authentication-providermanager-erasing-credentials[credential erasure] for cached users.
+
+The recommended way to do this is to simply publish your own `AuthenticationManager` bean, and Spring Security will use it.
+You can publish an `AuthenticationManager` using the following configuration:
+
+.Publish `AuthenticationManager` bean for Spring Security
+[tabs]
+=====
+Java::
++
+[source,java,role="primary"]
+----
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+ @Bean
+ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+ http
+ .authorizeHttpRequests((authorize) -> authorize
+ .requestMatchers("/login").permitAll()
+ .anyRequest().authenticated()
+ )
+ .httpBasic(Customizer.withDefaults())
+ .formLogin(Customizer.withDefaults());
+
+ return http.build();
+ }
+
+ @Bean
+ public AuthenticationManager authenticationManager(
+ UserDetailsService userDetailsService,
+ PasswordEncoder passwordEncoder) {
+ DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
+ authenticationProvider.setUserDetailsService(userDetailsService);
+ authenticationProvider.setPasswordEncoder(passwordEncoder);
+
+ ProviderManager providerManager = new ProviderManager(authenticationProvider);
+ providerManager.setEraseCredentialsAfterAuthentication(false);
+
+ return providerManager;
+ }
+
+ @Bean
+ public UserDetailsService userDetailsService() {
+ UserDetails userDetails = User.withDefaultPasswordEncoder()
+ .username("user")
+ .password("password")
+ .roles("USER")
+ .build();
+
+ return new InMemoryUserDetailsManager(userDetails);
+ }
+
+ @Bean
+ public PasswordEncoder passwordEncoder() {
+ return PasswordEncoderFactories.createDelegatingPasswordEncoder();
+ }
+
+}
+----
+
+XML::
++
+[source,xml,role="secondary"]
+----
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+----
+
+Kotlin::
++
+[source,kotlin,role="secondary"]
+----
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+ @Bean
+ fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
+ http {
+ authorizeHttpRequests {
+ authorize(anyRequest, authenticated)
+ }
+ formLogin { }
+ httpBasic { }
+ }
+
+ return http.build()
+ }
+
+ @Bean
+ fun authenticationManager(
+ userDetailsService: UserDetailsService,
+ passwordEncoder: PasswordEncoder): AuthenticationManager {
+ val authenticationProvider = DaoAuthenticationProvider()
+ authenticationProvider.setUserDetailsService(userDetailsService)
+ authenticationProvider.setPasswordEncoder(passwordEncoder)
+
+ val providerManager = ProviderManager(authenticationProvider)
+ providerManager.eraseCredentialsAfterAuthentication = false
+
+ return providerManager
+ }
+
+ @Bean
+ fun userDetailsService(): UserDetailsService {
+ val user = User.withDefaultPasswordEncoder()
+ .username("user")
+ .password("password")
+ .roles("USER")
+ .build()
+
+ return InMemoryUserDetailsManager(user)
+ }
+
+ @Bean
+ fun passwordEncoder(): PasswordEncoder {
+ return PasswordEncoderFactories.createDelegatingPasswordEncoder()
+ }
+
+}
+----
+=====
+
+Alternatively, you can take advantage of the fact that the `AuthenticationManagerBuilder` used to build Spring Security's global `AuthenticationManager` is published as a bean.
+You can configure the builder as follows:
+
+.Configure global `AuthenticationManagerBuilder`
+[tabs]
+=====
+Java::
++
+[source,java,role="primary"]
+----
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+ @Bean
+ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+ // ...
+ return http.build();
+ }
+
+ @Bean
+ public UserDetailsService userDetailsService() {
+ // Return a UserDetailsService that caches users
+ // ...
+ }
+
+ @Autowired
+ public void configure(AuthenticationManagerBuilder builder) {
+ builder.eraseCredentials(false);
+ }
+
+}
+----
+
+Kotlin::
++
+[source,kotlin,role="secondary"]
+----
+import org.springframework.security.config.annotation.web.invoke
+
+@Configuration
+@EnableWebSecurity
+class SecurityConfig {
+
+ @Bean
+ fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
+ // ...
+ return http.build()
+ }
+
+ @Bean
+ fun userDetailsService(): UserDetailsService {
+ // Return a UserDetailsService that caches users
+ // ...
+ }
+
+ @Autowired
+ fun configure(builder: AuthenticationManagerBuilder) {
+ builder.eraseCredentials(false)
+ }
+
+}
+----
+=====