Re: Problems with Fragroute-1.2

[Dug Song <dugsong () monkey org>]

On Mon, Apr 04, 2005 at 10:57:20PM +0530, Arun Vishwanathan wrote:

> Summary of my observations:
> ---------------------------
> 1. Fragroute works smoothly for both ICMP and TCP when the outbound
> interface is eth0.
> 2. When the destination is 20.0.0.2 i.e. network connected to eth1 then
> only ICMP packets are fragmented while the TCP session does not go
> through. 
> 3. Strangely the TCP client stack sends a RST on receipt of a SYN-ACK
> from the server. 
>
> Can anyone please tell me what is happening here? Am I doing something
> wrong? How should I rectify this?  I don't understand why the client
> stack which initiated the connection is sending the RST !!! ??

can you show me what your routing table looks like before you run
fragroute, and while it's running? the old fragroute pulled some
stupid routing tricks to intercept the outbound traffic on loopback,
which might be causing you problems (it was the only portable way to
do it at the time).

the new fragroute doesn't do this (it uses the native tunnel driver
now in Linux), but you'll need Python and a few other modules if you
want to try it:

        http://monkey.org/~dugsong/tmp/fragroute-2.0b1.tar.gz

-d.

---
http://monkey.org/~dugsong/

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