Why would you want to restrict traffic sourced from the ASA? (since it is initiated by the admin most of the time) If we understand the background of your requirement, we might be able to provide an alternative solution.
Since the ASA is a security device it is not allowed to telnet/ssh to other systems. It can ftp/http for image downloads and send syslog, but that's about it (that I can think of off the top of my head).
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...