Question about .net security and memberships

Hello,

Coming from a classic ASP background. We have a website that runs on classic ASP which we are migrating to .net

We already have our inhouse authorization rules and security. But moving to .net I have the following questions

PROBLEM: We want to use .net's security using web.config to configure access rules.

1. Must we use the inbuilt memberships and forms authorization

2. Must we use the authorization rules and users/roles in MS SQL Express ?

We already have ours and quite confused about this

 

WHAT ARE THE PROS AND CONS or using Microsoft's or using ours ?

Thanks

Ehi
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