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Block access to internet.

Posted on 2004-11-07
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Last Modified: 2010-04-12
I have 2 sites and each site use Linksys  BEFVP41 (VPN router) to connect to internet so that these 2 sites can have VPN tunnel and each site can access to another site using internal IP. I would like to block 1 site ( i.e. site A ) computers to access to internet website ( all services of internet such as FTP, webpage, ICQ, etc). meanwhile, I would like site A computers to connect to the email server in another site B, would somebody please give me suggestions on how to implement the situation? Thanks.
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Question by:mikekwok
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Expert Comment

by:grblades
ID: 12522205
Hi mikekwok,
You would need to use the 'filters' capability of the Linksys to permit site A to talk to site B but deny everything else.
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Author Comment

by:mikekwok
ID: 12529183
My Linksys Router Filter Page only can let me set the port range and the private range. Do you know if i have set the filter IP range from 192.168.1.1 to 192.168.1.10 . the computers with IP from 192.168.1.1 to 192.168.1.10 cannot access to internet website, rite? How about if they can access 192.168.2.x ? 192.168.2.x is the ip of another site. Thanks.
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LVL 36

Expert Comment

by:grblades
ID: 12531061
If the router cannot filter by destination address then you only really have two alternatives:-

1) Replace the router with another which does have this functionality.

2) Add a router between the internal network and the Linksys at site A and configure it to only allow traffic to site B.
This could be a cheap second hand router or could be a computer running a software firewall such as Linux.
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Author Comment

by:mikekwok
ID: 12531342
I think cannot replace router since these 2 routers has built-in VPN function and these router cannot behind another firewall or router. Would you please suggest me how to solve my problem? Thanks.
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Accepted Solution

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grblades earned 200 total points
ID: 12531379
If you cannot replace them then you have only option 2. You need an additional router setup as follows:-

Internet --- Linksys --- Additional Router --- Internal machines
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Author Comment

by:mikekwok
ID: 12806772
I have found a router which is suitable for me . It is PCi BRL-04FPU.
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