Hi,
If any source spoofed pkt comes in, first I will chech whether the source address
present in the pkt is one of my internal network address (or route entry), if so, I
will be checking the Interface through which the pkt has come, is my external
interface. If it so, it will be blocked.
My question is, how do I know that the interface through wich the pkt has come is
External or Internal interace.?
To know about the interface detail, do I need to maintain a interface table in packet
filtering router, saying that the Interface 1 and 2 is internal interface and the
Interface 3 is external interface. Is this is the only way to differentiate the
internal and external interfaces or any other method is there, otherthen configuring
the interface detail in the interface table as statically?.
thanks in advance,
G.kamatchi soundaram.
" You cannot discover new oceans unless u have the courage to leave the shore".
/* * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * *
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G.Kamatchi soundaram,
Software engineer,
Future Software Pvt. Ltd.,
480/481, Mount road,
Nandanam,
Chennai -600 017
Ph: 044- 4330550 ext -397.
Mail ID -- [EMAIL PROTECTED]
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