With The Dude you can monitor your network through the use of SNMP, TCP, ICP, and DNS.
If your organization uses Tcpreplay, please let us know who you are and what you use it for so that I can continue to add features which are useful. When it comes to entry level packet Sniffers, The Dude is one of the best on the market.
Tcpreplay supports both single and dual NIC modes for testing both sniffing and in-line devices.Tcpreplay is used by numerous firewall, IDS, IPS, NetFlow and other networking vendors, enterprises, universities, labs and open source projects. It allows you to classify traffic as client or server, rewrite Layer 2, 3 and 4 packets and finally replay the traffic back onto the network and through other devices such as switches, routers, firewalls, NIDS and IPS's. Tcpreplay is a suite of GPLv3 licensed utilities for UNIX (and Win32 under Cygwin) operating systems for editing and replaying network traffic which was previously captured by tools like tcpdump and Ethereal/Wireshark. Tcpreplay - Pcap editing and replay tools for *NIX and Windows - Users please download source from