【求助】有關病毒

請問各位如何解w32.Welchia.Worm這個病毒?還有這是什麼病毒?謝謝!

[url]http://securityresponse.symantec.com/avcenter/venc/data/w32.welchia.worm.removal.tool.html[/url]

非常感謝你的幫忙!!!!!!!!!!

跟我一樣,不都我更慘.剛換電腦一上網就中了(第一次中毒).[url]http://www.nohack.com.tw/WebScan/webscan.asp[/url]
有可檢電腦門戶的安全.不過我不知要如何關閉這些可能會攻擊管道像以下這些:
ICMP Ping Ping. Ping is a network troubleshooting utility. It asks your computer to acknowledge its existence. If your computer responds positively to a ping, hackers are more likely to target your computer.

21 FTP (File Transfer Protocol). FTP is used to transfer files between your computer and other computers. Port 21 should be open only if you're running an FTP server.

22 SSH. TCP connections to this port might indicate a search for SSH, which has a few exploitable features. SSH is a secure replacement for Telnet. The most common uses of SSH are to securely login and copy files from a server.
謝謝回答

我是用firewall...
W32.Welchia.Worm 移除工具:
[url]http://securityresponse1.symantec.com/sarc/sarc-tw.nsf/html/tw-w32.welchia.worm.removal.tool.html[/url]