From owner-freebsd-net  Tue May 11 19:49:51 1999
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Date: Tue, 11 May 1999 19:50:00 -0700 (PDT)
From: boards yan <boardyan@yahoo.com>
Subject: Why not response?
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hi,
In a program, I have to implement a function.
That is,   (not a hacker's idea)

A--------------R----------------B
1,A tries to make a tcp connection to B.
2,R is A's default router.
3,When R receive A's ip packet, it just changes the ip   source address
by the address of itself.
  Then R sends the packets.
  R pretends that it is him that wants to establish a    tcp connection
with B.
4,B receives the packets, and responds to R...

The issue is B does response icmp packets(ping),
but does not response tcp packets
as if it regards them illegal packets and therefore discards them.

Did I miss something?
Any explanation is helpful.
Thanks in advance.

Board
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