Spring Boot Management security works differently with port set - spring

Question

I'm trying to configure a Spring Boot application (1.2.3, but this also fails with the 1.2.4.BUILD-SNAPSHOT version) with Actuator support. I want to use the Actuator security config for controlling access to the management endpoints, and our own authentication for the rest of the application.
Here is my security config:
#Configuration
#EnableWebSecurity
#Order(SecurityProperties.ACCESS_OVERRIDE_ORDER)
public class SecurityConfiguration extends WebSecurityConfigurerAdapter
{
#Autowired
private CustomAuthenticationProvider customAuthProvider;
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception
{
auth.authenticationProvider(customAuthProvider);
}
#Override
protected void configure(HttpSecurity http) throws Exception
{
http
.authorizeRequests()
.regexMatchers(API_DOC_REGEX).permitAll()
.regexMatchers(String.format(PATH_REGEX, PUBLIC_ACCESS)).permitAll()
.regexMatchers(String.format(PATH_REGEX, INTERNAL_ACCESS)).access("isAuthenticated() && authentication.hasOrigin('INTERNAL')")
.regexMatchers(String.format(PATH_REGEX, EXTERNAL_AUTHENTICATED_ACCESS)).authenticated()
.antMatchers("/**").denyAll()
.and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.NEVER)
.and()
.addFilterAfter(customAuthProcessingFilter(), BasicAuthenticationFilter.class)
.csrf().disable();
}
}
This works correctly when I don't set a management port, but when I set the management port, the management URLs return 401 responses. If I comment out the line .antMatchers("/**").denyAll(), then everything goes through without requiring authentication at all. So it looks like it is using my application's security config for the Actuator endpoints when I set a custom port, but I'm not sure why.
How do I get it to use it's own security when running on a custom port?

Answer 1

Expanding on the comment from #M. Deinum, adding another adapter for the Management stuff (even though it already has one) seems to have fixed it. This is the class I ended up with:
#Order(0)
#Configuration
public class ManagementSecurityConfig extends WebSecurityConfigurerAdapter
{
#Autowired
ManagementServerProperties managementProperties;
#Override
protected void configure(HttpSecurity http) throws Exception
{
http
.requestMatchers()
.requestMatchers(new RequestMatcher()
{
#Override
public boolean matches(HttpServletRequest request)
{
return managementProperties.getContextPath().equals(request.getContextPath());
}
})
.and()
.authorizeRequests()
.anyRequest().hasRole("ADMIN")
.and()
.httpBasic();
}
}