pfring-7.4.0-2774.{el6,el7}.x86_64.rpm - PF_Ring is a new type of network socket that dramatically improves the packet capture speed.
This package contains header files and libraries, among other files, to support the PF_Ring network socket.
Here is the announcement of PF_Ring 7.4.
pfring-dkms-7.4.0-2774.{el6,el7}.x86_64.rpm - PF_Ring is a new type of network socket that dramatically improves the packet capture speed.
This package conains the code and supporting files needed to create the PF_Ring kernel module.
ndpi-3.0.0-2104.{el6,el7}.x86_64.rpm - ndpi is an open source LGPLv3 library for deep-packet inspection.
Based on OpenDPI it includes ntop extensions.