I am trying to prepare myself for the SNPA exam, and am stuck on the static command. I understand the basic IP to IP translation version of the command (static (IF/IF) IP MASK IP MASK), but I am lost when I start seeing numbers at the end of that string. The command syntax confuses me because there are so many options. For example, examples provided to me for allowing outside access to a DMZ-based web-server are written static (dmz,outside) Out_IP Out_mask Dmz_IP Dmz_mask 0 0 ... What are the zeroes??? I know that you can specify embryonic connection limits, but that is just one of those numbers..what's the other?
the second number - max embryonic connections - allows x amount of embryonic connections per host. Once the 'x' amount is reached, TCP intercept intervenes and the PIX/ASA starts intercepting TCP requests to make sure the 3 way handshake is completed. if the 3 way handshake is completed (via the PIX/ASA), the connection is allowed to seamless complete back to the inside originating host. the default value of zero, basically means TCP intercept will never be used and limitless embryonic connections will be allowed.
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...