Is it possible to secure a web service with Forms Authentication?

Question

We are looking to secure a bunch of ASP.Net 2.0 .asmx web services. The which will host the web services is already forms authenticated.
Is it possible to secure the

Answer 1

WSE is obsolete. Do not use it unless you have no choice at all.

Almost all the functions of WSE are implemented better by WCF. The remaining capabilities, those not implemented by WCF, are obsolete themselves (DIME, for instance).