Operators Union operation is implemented as follows: the users network login time, access controller will send the users logon request to a Portal server, the server operators from which to judge the user, whether it is operating coalition members. After the positive response received, an operator identification information to the AC, while recognizing the legitimate users. For example, it is the user roaming operator A to operator Bs network, the access controller in the user access network, the operators A and B simultaneously transmit the billing information and user information, the two sides according to the previous into roaming agreements. Once heard one of the WLAN technology inventor Links mentioned, 3G is a WLAN plus GPRS. Might sound when you can not help but surprise, think carefully about it also felt there was some truth, although WLAN can not be everywhere, but for the people living in the city, WLAN has become increasingly convenient to use, after all, not everyone needs while driving watch broadband movies.
Exchange Server 2007 extends the Exchanges anti-spam framework. The framework consists of several layers of protection measures to the Safe Senders collection, Outlook e-postmark, spam quarantine, sender reputation, the edge server, content filtering, Microsoft Forefront Security for Exchange Server and many different ways stop junk mail and reduce the hassle of spam. For onsite anti-virus protection, anti-virus software provider and the customer can provide a new Exchange Server 2007 transport agent API benefit. Through the API, you can write anti-virus software provider and the Exchange Agent to directly interact with the built-in transfer agent. Because information is through the Edge Transport server or Hub Transport server into the organization, the transmission server can call to check anti-virus proxy filter that information and