Among the many new and improved capabilities for Microsoft Windows Server 2008 the most important role played by changes resulting from the work on the network. These updates represent the biggest set of changes since the release of Windows Server 1990 - s. They help IT administrators to provide greater security, reliability and scalability of the network.

Windows Server next generation
Central among these improvements has a "stack TCP / IP next generation", which represents a major upgrade functionalities of Windows TCP / IP, related services and application programming interfaces. Stec TCP / IP represents the next generation of a fully functional architecture that meets the needs of connectivity and productivity of various modern network environments and technologies. However, the extensibility of the new TCP / IP stack provides flexibility in adapting new network standards and meeting the needs of customers in the future.

Changes and improvements in network protocols and the basic components in Windows Server 2008 include the following:
• The new dual architecture IP TCP / IP stack for universal support for IPv4 and IPv6;
• advanced algorithms for automatic setup and network optimization;
• security and improve network nodes IPsec;
• Integrated support for hardware and unloading network acceleration technologies;
• simplified management and network diagnostics;
• set of application programming interfaces for a variety of expansion possibilities.

Windows Server Administrators will receive the following benefits with the use of these innovations and network improvements.
The expanded cross-cutting infrastructure security
To help administrators face continuously growing number of network threats, Windows Server 2008 includes a number of security enhancements network nodes. As part of the overall strategy of multilevel protection, these functions are at the core of several key decisions in the area of network security on the basis of policies, such as: server and domain isolation (EN), network access protection (NAP) (EN), as well as a secure wireless LAN ( EN):

• Improved Windows firewall supports filtering of inbound and outbound packages, as well as integrated IPsec functionality.
• Simplified configuration IPsec policy with expanded authentication methods, the full support IPv4 and IPv6, as well as integration with the protection of access to the network.
• New options for managing group policy security wired and wireless.
• A broad range of application programming interfaces for testing of network packets, and more secure applications based on Windows Sockets.

Enhanced performance and reliability
Thanks to a renewed intelligent algorithm, Windows Server 2008 automatically adjusts the parameters of a network connection in order to maximize the capacity and productivity. This results in accelerated data transmission, better use of network bandwidth and high reliability of the connection. Windows Server 2008 dynamically configures connections in the light of specific conditions, including the following.
• Available bandwidth and waiting time - Automatic Configuration Tool TCP Receive Window Auto-Tuning dynamically adjusts the size of the receiving TCP buffer used to store the incoming data, in order to increase capacity, particularly on links with high capacity and long waiting time.
• Overload Network - To better use of network bandwidth means Compound TCP (CTCP) significantly increases the amount of data sent simultaneously with the help oversee product, causing a decline in productivity, delays and the loss of options packages.
• Wednesday with high packet loss - Support for multiple network optimization algorithms based on standards such as the rapid restoration of TCP, TCP Selective Acknowledge parameter (SACK) and the Forward RTO-Recovery, offers increased reliability and quick recovery in environments with high packet loss, such as wireless networks.
• Crashes in routing path - Improved detection mechanisms and increase reliability of non-congested routers and gateways increases the speed of recovery and routing flexibility.

Most scalability
In order to maintain a high growth rate meet the requirements of IT infrastructure, the possibility of scaling required network resources. Windows Server 2008 provides an expanded network through better scaling mnogogigabitnyh support networks, technologies improve performance and discharge network bandwidth management on the basis of the policies and the use of internet protocol next generation.

• Unloading processing network packets using specialized network adapters, which applies TCP Offload Engine (TOE), and other technologies accelerate work on the network, including support for Gigabit IPsec Task Offload.
• Dynamic balancing incoming network connections using scaling on the receiving side for the distribution of traffic on several of processors or nucleus to increase the performance of your server.
• optimization and the prioritization use of bandwidth with policy-quality of service (QoS) at the nodes managed through Active Directory.
• The addition of new scenarios and ways to connect through the full support of IPv6, including conversion technologies such as protocol ISATAP.