SP2 firewall could share settings with the whole internet
Users who installed SP2 on their Windows XP machines and also have file and printer sharing enabled may have been sharing their files and printers with the entire internet, according to Microsoft.
By default, file and printer sharing makes changes to the SP2 firewall to give computers on the local network access to shared resources. However, the definition of that local network depends on the ISP. In some cases, especially with dial-up ISPs, this can mean the entire internet, according to Microsoft.
By Joris Evers at Computer Weekly.
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