Server and client software for simple network protocols, including: Character Generator, Daytime, Discard, Echo, and Quote of the Day
Routing Information Protocol (RIP) listener (for Windows XP Professional) and RIP and Open Shortest Path First (OSPF) (with the Routing and Remote Access service)
Network Address Translator (NAT) capabilities using either the Internet Connection Sharing (ICS) or the NAT/Basic Firewall routing protocol component of the Routing and Remote Access service
Stateful firewalling capabilities using either the Internet Connection Firewall (for Windows Server 2003 with no service packs installed), Windows Firewall (for Windows Server 2003 Service Pack 1), or the NAT/Basic Firewall routing protocol component of the Routing and Remote Access service
Multicast forwarding and IGMP router and proxy capabilities with the Routing and Remote Access service
TCP/IP management and diagnostic tools, including: arp, ipconfig, nbtstat, netsh, netstat, ping, pathping, route, nslookup, and tracert
New Features for Windows Server 2003 TCP/IP
The features and improvements of TCP/IP that are new for Windows Server 2003 include the following:
Windows Server 2003, Windows XP with Service Pack 1, and Windows XP with Service Pack 2 now include a production-quality IPv6 protocol stack. For more information about IPv6, see Windows Server 2003 Help and Support Center or the Microsoft Windows IPv6 Web site (http://www.microsoft.com/ipv6).
Auto-negotiation of RFC 1323 options (window scaling and TCP timestamps).
Default support of network interface cards (NICs) providing large send offload (LSO) and checksum offload.
IGMP version 3.
Reliable multicast with PGM.
Automatic determination of the interface-related and default route metrics.
The table below lists features and the operating system versions that they are present in as a reference. Features are described in more detail throughout this paper.
Table 1. Feature Comparison Table for Windows TCP/IP Versions