[olug] A TCP/IP mystery

[Dave Thacker]

We have a process at work that sends data from a windows machine (owned by 
vendor S) through an encrypted TCP tunnel to a linux machine.   The lash up 
is not performing well and finger-pointing abounds.   Currently, Vendor S is 
telling us that the Linux machine is "blocking" when they attempt to send a 
large volume of transactions to it. 

I'm not seeing errors in the the stunnel log, nor am I showing errors in the 
basic ifconfig command.  This is an SLES 10 box, so I have the usual array of 
linux implements available, and I've installed iptraf.   If I was to start 
monitoring with those tools. what would a "block" look like?  

TIA
Dave