Re: Can't create TCP connections to certain IP addresses

From: David Malone <dwmalone_at_maths.tcd.ie>
Date: Mon, 20 Aug 2007 09:47:59 +0100
On Sun, Aug 19, 2007 at 05:51:14PM -0400, Anish Mistry wrote:
> I'm not sure how to do that with the version of m0nowall that the 
> router is running.  But I can exhibit this behavior on the local LAN 
> without going through the router.

In that case, run a tcpdump on both ends and see if the SYN packet
is arriving at the far end. You might also want to try using "tcpdump
-s0 -v" to check the checksums on the packets (though they can't
always be trusted on the packet's sender if the network card supports
checksum offloading).

	David.
Received on Mon Aug 20 2007 - 06:48:03 UTC

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