Dear Sudheer Take a look at, iptstate. http://www.phildev.net/iptstate/ It just shows currentily being tracked connections. Hope it helps.
Harald has already advised about gathering statistics from /proc/net/ip_conntrack.
Please have a look at this: https://lists.netfilter.org/pipermail/netfilter-devel/2004-February/014121.html
-- Pablo