Your company has a main office and one branch office. All servers run Windows Server 2003 Service Pack 2 (SP2).The main office has a third-party gateway device named Gateway1. Gateway1 is connected to the internal network and the Internet. Gateway1 supports IPSec. In the branch office, you have a server named Server1. You create an IPSec policy on Server1.You need to ensure that Server1 can establish an IPSec tunnel to Gateway1. 
What should you use to configure the IPSec policy?（）

Your company has a main office and one branch office. Your network consists of an Active Directory domain.You have a remote access server in the main office named Server1. You have a remote access server inthe branch office named Server2.Server2 has a demand-dial interface that connects to Server1. The demand-dial interface connects by using a domain account named Ras1.You need to prevent Server2 from establishing new demand-dial connections to the main office between 18:00 and 08:00. 
What should you do?（）