There may be several reasons for this issue.First of all, to start from the scratch,did you encounter any problem during the upgradation?
Is the PIX device functioning normally with this new image 7.04.Check whether it is booting from this new ios image and let me know regarding this.While upgrading to new ios image version, you have to remove the old version from flash(or wherever the image is stored).
Also, you have to use boot system flash:/pix704.bin for the pix device to use the corect boot up image.
Ensure with these basic things.If you are sure, then let me know so that we can proceed further to the configurations.
The upgrade itself went fine and the 7.0.4 image has been running since reboot; the issue was identified by Cisco TAC and has been resolved. Apparently, the config file conversion from v6.3.4 missed a line that directed Internet-bound traffic back to VPN clients.
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...
[toc:faq]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 and UDP are I...