I have to multiple Web applications in the SP2013. For example, from the main site, http://mysite.com:80 , it has a link which links to another web in another web application, i.e. http://mysite.com:12345/Test . Now, when user accesses http://mysite.com:80 , it needs to login (no anonymous allowed), when user click link for http://mysite.com:12345/Test , it asks for login again although the credential is supposed to be the same.
Is there a way to get around this? so user only login once?