[vpn-help] Updated package and problem reports

Matthew Grooms mgrooms at shrew.net
Wed Aug 16 23:12:56 CDT 2006


Peter Eisch wrote:
> In the Trace app, is there a way to get (hex-coded) the packet that you're
> getting from OS/application?  If not the whole packet, is there a way to at
> least get the packet headers?  I have the problem down to one packet.  I can
> see the encoded logging of the packet, I can verify that the encoded packet
> is on the wire, I can verify the receipt of the encoded packet and I can see
> the decoded packet as it is put on the wire.  I cannot tell from the trace
> app (with everything selected) what is getting handed off.
> 
> This would help identify, indemnify if you will, what is happening.
> 

Peter,

	The trace application has an option named "Enable packet dump of 
private interface traffic" which will dump, in pcap format, the packets 
being sent from os ip stack to the virtual adapter. This is pre-ipsec 
processing so you should be able to open this to examine the packet 
contents with anything that reads pcap.

	However, the VPN client will assemble and re-fragment packets in an 
attempt to coax as much throughput as it can out of the connection. I 
mention this because the private network traffic may not look exactly 
like the public interface traffic with this option enabled. Have you had 
a chance to check if the issue was still present when this option is 
disabled? The info may help point me closer to where a potential bug may 
be hiding ;)

Thanks again for being so thorough with your problem reports,

-Matthew



More information about the vpn-help mailing list