If you check out the Sectools website (sectools.org) or if you download BackTrack (http://www.remote-exploit.org/backtrack_download.html) you can find a lot of really useful tools. Most of these are hacking tools so be sure to use them in accordance with whatever policies you are subject. I've used hPing in the past to simiulate syn floods and dDos attacks.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...