Message from discussion no internet

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From:  I <agius....@gmail.com>
To:  network-programming-2007 <network-programming-2007@googlegroups.com>
Subject: no internet
Date: Wed, 23 May 2007 07:39:17 -0700
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Hi All,
I've got 2 routers connected together in this way:

R3 -------R1---------------------R2

how can I stop router 2 from accessing R3?

my idea was to add a new entry in the R1 routing table (called SOURCE)
where I would make an entry that says: if source is R2 and destination
is R3, loopback. Is this solution good?

10ks before hand
regards Ian