Trong cấu hình mặc định, máy chủ DNS thực hiện đệ quy để giải quyết tên. Nói chung, đệ quy trong DNS dùng để chỉ quá trình của một máy chủ DNS truy vấn các máy chủ DNS khác thay mặt cho một khách hàng truy vấn ban đầu. Quá trình này, hiệu lực, biến DNS gốc | 312 Chapter 7 Connecting to Networks Internet Connection Sharing ICS Primarily intended for home and small offices. ICS configuration can be performed with only a few clicks but its configuration options are extremely limited. Routing And Remote Access Services Intended for organizations with a routed intranet meaning an intranet with multiple subnets . The sections that follow describe each of these NAT technologies. Exam Tip For the exam understand the differences between ICS and Routing And Remote Access Services. Focus most of your energy on Routing And Remote Access Services however. Configuring Internet Connection Sharing Figure 7-2 shows a typical ICS architecture. The ICS computer has a public IP address or an IP address that provides access to a remote network on the external network interface. The internal network interface always has the IP address . Enabling ICS automatically enables a DHCP service that assigns clients IP addresses in the range 24. This DHCP service is not compatible with either the DHCP Server role nor the DHCP relay agent feature of Routing And Remote Access. Follow these steps to configure NAT using Internet Connection Sharing 1. Configure the NAT server with two interfaces Lesson 1 Configuring Network Address Translation 313 An interface connected to the Internet with a public Internet IP address An interface connected to your private intranet with a static private IP address 2. If you have previously enabled Routing And Remote Access disable it before continuing. 3. Click Start right-click Network and then choose Properties. The Network And Sharing Center appears. 4. Under Tasks click Manage Network Connections. 5. Right-click the network interface that connects to the Internet and then click Properties. 6. Click the Sharing tab and select the Allow Other Network Users To Connect Through This Computer s Internet Connection check box. 7. If you want users on the Internet to access any servers on your intranet
