Windows XP Pro with SP2 includes a firewall that can slow down broadband connections. Users with a router may not need the Windows firewall since routers block unsolicited incoming traffic unless configured otherwise, providing adequate inbound protection against threats like non-email worms. However, local firewalls can still be beneficial for preventing reverse-connect trojans and monitoring outbound traffic, as routers do not provide outbound protection. For users who practice safe browsing habits, relying solely on a router may suffice without a local firewall. There is uncertainty about the outbound protection capabilities of the original XP SP2 firewall.
