Choose a an authentication implementation that is appropriate in the aspire properties file. Here is an example with Trivial authentication.
request.aspire.authentication.authenticationObject.className=\
com.ai.aspire.authentication.TrivialAuthentication
request.aspire.authentication.authenticationObject.publicURLs=\
LoginPageURL,WelcomePublicJSPURL
request.aspire.authentication.authenticationObject.publicRequestNames=\
LoginRequest
See how public urls are defined as a comma separated list aspire url names. Also see how aspires update requests can also be mentioned as public.
Notice that the lines are broken for clarity. You may want to put them on the sameline