if you don't have a firewall - & you use windows xp -

activate the one that comes with windows xp.

there is a lot of suspicious scripting going on.

 

check out the info at: http://www.microsoft.com/security/incident/blast.asp

scroll down the information on blaster worm.

read about blaster worm.

 

instructions for activating windows xp firewall are as follows:

1. On the taskbar at the bottom of your screen, click Start, and then click Control Panel.
2. Click the Network and Internet Connections category.
   (If the Network and Internet Connectionsis not visible, click Switch to Category View under Control Panel on the left side of the Control Panel window.)
3. Click Network Connections.
4. Right-click the Dial-up, LAN, or High-Speed Internet connection that you use to connect to the Internet, and then click Properties from the context menu.
5. On the Advanced tab, under Internet Connection Firewall, select Protect my computer or network, and then click OK.
   The Windows XP firewall is now enabled.