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Answer Posted / harish
Raw mode is basically there to allow you to bypass some of
the way that your computer handles TCP/IP. Rather than going
through the normal layers of encapsulation/decapsulation
that the TCP/IP stack on the kernel does, you just pass the
packet to the application that needs it. No TCP/IP
processing -- so it's not a processed packet, it's a raw
packet. The application that's using the packet is now
responsible for stripping off the headers, analyzing the
packet, all the stuff that the TCP/IP stack in the kernel
normally does for you.
A raw socket is a socket that takes packets, bypasses the
normal TCP/IP processing, and sends them to the application
that wants them.
Unless you're a programmer, a kernel hacker, or really
really into security, you will most likely not need to deal
much with these. But it's good to know what they are, in
case you find yourself in one of the above scenarios.
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