i've setup an ipsec tunnel between a pix and a ssg550.
if i try to connect from a server behind ssg550 to a server behind pix, the ipsec tunnel goes up and i can connect the servers on pix side. Instead, if a try to connect from a server behind the pix to a server behind ssg550 the tunnel doesn't go up.
when tunnel is up i'm able to connect in both directions.
from pix debug i can read:
ISAKMP: unable to add atts to IPSec SA!
Can anyone help me to understand why tunnel goes up when requests are from ssg550 to pix and not viceversa?
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...