C:\WINDOWS\system32\drivers\etc
oke thiyena hosts kiyana file eka mulinma backup karaganna
dan eka notepad eken open karala
eke thiyena list ekata
127.0.0.1 facebook.com
add karala save karanna.. eth ithin mehema karoth mulu pc ekenma fb yanna be aye meka remove karala save karanakan,, neththan...