Hi Ajit,
did you configure SNAT AutoMap for your virtual server? Asymmetric traffic flow is a typical reason for failing communication.
A tcpdump to track incoming traffic including serverside traffic would look like this:
tcpdump -nnni 0.0:nnnp -s 0 -e -c 1000 host
-nnn
= no name/protocol resolution,
-i 0.0
= dump on the internal interface,
:nnnp
= dump the internal ethernet trailer data and peer traffic (serverside traffic),
-s 0
= dump full packet including the ethernet trailer data,
-c 1000
= limit the dump to 1.000 packets,
host
= one of many possible filters,
Thanks, Stephan