几句asp英文资料,怎么翻译更准确?

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1. Internet Information Server 3.0 supports three authentication schemes: Anonymous, Basic (Clear Text), and Windows NT? Challenge/Response.

iis提供了3种验证方法,匿名,基本(明文),第三种是什么啊?怎么翻译?

2.A typical IIS configuration has Anonymous enabled, as well as either, or both, of the other methods.

这句话就更不会翻译了.
一般的iis配置启用匿名访问,.... 后面的如何翻译

整段英文原文如下:
Internet Information Server 3.0 supports three authentication schemes: Anonymous, Basic (Clear Text), and Windows NT? Challenge/Response. Each of these authentication methods is enabled or disabled through the WWW Service Properties page in Microsoft Internet Service Manager. A typical IIS configuration has Anonymous enabled, as well as either, or both, of the other methods. Anonymous authentication is the least secure method, while Basic and Windows NT Challenge/Response provide differing levels of security for your Web pages.