block some website

Hi Expert,
How to block some websites from server
Any open source proxy server available?
Or any settings we can make in dns server (domain controller ) ?
LVL 4
bominthuAsked:
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Ernie BeekExpertCommented:
If it's just a few websites, make them point to 127.0.0.1 in DNS.
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Miguel Angel Perez MuñozCommented:
Add a entry on hosts file as follows:

dns.name              any IP

For example:
www.yahoo.com             74.125.230.84

This line redirects www.yahoo.com to this ip (google).
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bominthuAuthor Commented:
Hi Drashiel,
u r right, can be done above, problem is there are some clients which are not joined to domain..how about for them ? But they still use server DNS. The above option applied to member of domain only.
Any suggestion for setting ? Or simple open source tool to run in server ?

Tks
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Ernie BeekExpertCommented:
You have a firewall of some sort in place?
You might be able to do some blocking from there.
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bominthuAuthor Commented:
I don't have firewall
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bominthuAuthor Commented:
any free proxy server to run in server ?
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liddlerCommented:
Open source proxy server is squid http://www.squid-cache.org/ this can do what you want
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bominthuAuthor Commented:
Could you advise how to block yahoo messenger and msn messenger ?
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Miguel Angel Perez MuñozCommented:
bominthu, block messenger software has no big impact, because are a lot of webpages that has web messenger. Squid or Forefront could block using categories to filter this traffic.
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