I am currently experiencing problems with authentication on a SharePoint site. Routinely, user accounts(only one or so at a time) will be locked out and they will get 401 unauthorized errors. The SharePoint implementation is using only local user accounts, has SSL, and NTLM authentication. I am not sure of the exact network configuration (I am not the network admin) but a proxy may be involved. By the time the issue is investigated by the Network Admin, the account is working again. So intermittent as well. My questions for this are:
1.) Has anyone run into this before?
2.) Would switching to Basic Authentication resolve this? There are brief whispers of NTLM mangling in WSS when a proxy is involved.
3.) Is SSL and IWA together a bit overkill in the first place? I mean the password and login would be sent encrypted in Basic Auth with SSL anyway right? And the benefits of IWA in a non-Domain extranet seem useless to me.