A personal firewall is a critical line of defense against attempted intrusions, malware infections, denial-of-service attacks, and other types of attacks. Like the firewall functionality in Windows XP Service Pack 2 (SP2), the firewall in Windows Vista is enabled by default to help protect the user’s computer as soon as the operating system is started. The Windows XP firewall restricts only inbound traffic, whereas the Windows Vista firewall supports both inbound and outbound filtering to help protect users by restricting certain outbound connections that infected or compromised PCs often attempt to establish. The firewall is also integrated with Windows Vista network awareness so that specialized rules can be applied, depending on the location of the client computer. For example, firewall rules can be defined separately for users when they are logged on to the corporate domain as opposed to when they are logged on to a public network (i.e. a wireless hotspot). Firewall management in Windows Vista is also integrated with Internet Protocol Security (IPSec) in a single console known as the “Windows Firewall with Advanced Security Console.” This allows for centralization of inbound/outbound filtering and IPsec server/domain isolation settings in the user interface to simplify configuration and reduce policy conflicts. As with Windows Defender, the Windows Firewall complements (but not necessarily altogether replaces) current third-party security solutions.