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To: lkj who wrote (33821)	7/1/1999 4:31:00 PM
From: Scott Overholser	Read Replies (1) \| Respond to of 152472

you are completely correct in this: 1. the user must login to the exchange server. 2. the exchange server must be exposed to the internet. keep this in mind: 1. there are many new and promising secure authentication protocols that are finding application. 2. existing secure authentication protocols provide good security. two examples are ntlm (windows nt/lan manager) and kerberos (developed at mit i think.) only ntlm is supported out of the box by exchange and windows nt. windows 2000 will support ntlm and kerberos. there are prolly 3rd party packages also. bottom line is that this arrangement is no less secure than the services provided by a multitude of online services today - online trading, e-commerce, etc... I was worrying over security, because I thought that a user must log on to an Exchange server to access his Email. This logon would also be done over the Internet, which means the Exchange server must be open up to the Internet.