Como Bloquear o Acesso ao Messenger, Orkut, Twitter, Facebook e Outros Sites no Computador Com Sistema Operacional Windows
Primeiro você abre Meu Computador, (Veja as imagens) e depois abre o disco local C.
Localize e abra a pasta Windows.
Dentro da pasta Windows localize e abra a pasta System32.
Dentro da pasta System32 localize e abra a pasta drivers.
Dentro da pasta drivers localize e abra a pasta etc.
Dentro da pasta etc localize e abra com o bloco de notas o arquivo hosts.
copie e cole os seguintes dados, abaixo da linha 127.0.0.1 localhost.
# messenger
127.0.0.1 gateway.messenger.hotmail.com
127.0.0.1 gtwy.messenger.hotmail.com
127.0.0.1 messenger.hotmail.com
127.0.0.1 svcs.microsoft.com
127.0.0.1 webmessenger.msn.com
127.0.0.1 kickme.to/msnmessenger2go
127.0.0.1 iloveim.com
127.0.0.1 e-messenger.net
127.0.0.1 atlanta.e-messenger.net
127.0.0.1 boston.e-messenger.net
127.0.0.1 msn2go.com
127.0.0.1 msn2go.com.br
127.0.0.1 webmsn.net
127.0.0.1 e-messenger.cl
127.0.0.1 passaport.netport.net
127.0.0.1 www.messemgerfx.com
127.0.0.1 messemgerfx.com
127.0.0.1 69.36.226.110
127.0.0.1 69.36.226.150
127.0.0.1 69.36.226.175
127.0.0.1 69.36.226.189
127.0.0.1 64.92.172.107
127.0.0.1 216.129.112.85
127.0.0.1 216.129.112.86
127.0.0.1 216.129.112.116
127.0.0.1 chicago.e-messenger.net
127.0.0.1 vicotria.e-messenger.net
127.0.0.1 msn2go.com.br
# orkut
127.0.0.1 orkut.com
127.0.0.1 www.orkut.com
127.0.0.1 images.orkut.com
127.0.0.1 www.powerscrap.com
127.0.0.1 powerscrap.com
127.0.0.1 rss.powerscrap.com
127.0.0.1 www.ocurioso.com
127.0.0.1 ocurioso.com
127.0.0.1 orkut.etc.br
#facebook
127.0.0.1 http://facebook.com
127.0.0.1 http://facebook.com.br
127.0.0.1 http://pt-br.facebook.com/
127.0.0.1 www.facebook.com
127.0.0.1 www.facebook.com.br
127.0.0.1 facebook.com
127.0.0.1 facebook.com.br
127.0.0.1 www.facebook.com.br
127.0.0.1 www.facebook.com.au
127.0.0.1 login.facebook.com.au
127.0.0.1 www.login.facebook.com.au
127.0.0.1 www-10-01-snc2.facebook.com
127.0.0.1 www-11-01-snc2.facebook.com
127.0.0.1 www-10-03-ash1.facebook.com
127.0.0.1 www-12-08-ash1.facebook.com
127.0.0.1 www-13-08-ash1.facebook.com
127.0.0.1 static.ak.fbcdn.net
127.0.0.1 www.static.ak.fbcdn.net
127.0.0.1 login.facebook.com
127.0.0.1 www.login.facebook.com
127.0.0.1 login.facebook.com.nl
127.0.0.1 www.login.facebook.com.nl
127.0.0.1 fbcdn.net
127.0.0.1 www.fbcdn.net
127.0.0.1 fbcdn.com
127.0.0.1 ok.facebook.com
127.0.0.1 www.ok.facebook.com
127.0.0.1 a.ok.facebook.com
127.0.0.1 www.a.ok.facebook.com
127.0.0.1 facebook.com.au
127.0.0.1 www.facebook.com.au
127.0.0.1 nl nl.facebook.com
127.0.0.1 www.nl-nl.facebook.com
127.0.0.1 facebook.nl
127.0.0.1 www.facebook.nl
127.0.0.1 facebook.com.au
127.0.0.1 www.fbcdn.com
127.0.0.1 ads.ak.facebook.com
127.0.0.1 www.ads.ak.facebook.com
127.0.0.1 static.ak.connect.facebook.co m
127.0.0.1 www.static.ak.connect.facebook.com
127.0.0.1 login.facebook.com
127.0.0.1 www.login.facebook.com
#meebo
127.0.0.1 meebo.com
127.0.0.1 www.meebo.com
127.0.0.1 wwwl.meebo.com
127.0.0.1 wwwm.meebo.com
127.0.0.1 www34.meebo.com
127.0.0.1 www.meebo.com.br
127.0.0.1 meebo.com.br
127.0.0.1 www.meebome.com
127.0.0.1 meebome.com
127.0.0.1 www.meebome.com.br
127.0.0.1 meebome.com.br
#twetter
127.0.0.1 www.twetter.com
127.0.0.1 www.twetter.com.br
127.0.0.1 https://twitter.com/
127.0.0.1 https://twitter.com.br/
127.0.0.1 46.137.81.221
# web proxies
127.0.0.1 calculatepie.com
127.0.0.1 www.englishtunnel.com
127.0.0.1 englishtunnel.com
127.0.0.1 www.safehazard.com
127.0.0.1 safehazard.com
127.0.0.1 www.saferforwork.net
127.0.0.1 saferforwork.net
127.0.0.1 www.browseatwork1.com
127.0.0.1 browseatwork1.com
127.0.0.1 planetdangerous.com
Explicando:
As linhas acima do Messenger bloqueia o Messenger, Orkut bloqueia Orkut, Facebook bloqueia o Facebook, Twitter bloqueia o twitter, o Meebo bloqueia o site Meebo, o Meebo é um site que burla esses bloqueios, e os Web proxies são sites usados para burlar essas restrições também.
Você escolhe o que quer bloquear, só coloca as linhas referentes aos sites que quer bloquear.