When attempting to logon to my test Sharepoint 2013 externally via IP Address from a non domain joined PC (Site is on a different subnet) I get a prompt for username and password (as would be expected). No matter what I enter into this logon prompt I get the following:
"401 UNAUTHORIZED"
I have changed the authentication from default of Kerberos to NTLM already and have also attempted enabling plain text authentication and restarting the site with no change.
What needs to be set so external users can log in?