I am running Cisco AnyConnect VPN Client 2.5.6.005 on Mac OS 10.5.8
However when I was trying to connect today (after entering my user id and password as usual), there's an error message window popping up saying "Cannot install AnyConnect Secure Mobility Client 3.1.05152 because it requires Mac OS X 10.6 or newer. A VPN connection cannot be established. Contact your system administrator."
I notice that this may be an auto push upgrade due to HearBleed CVE lately (?), but how I can stop this as my Mac OS is not going to upgrade to a higher version to 10.6, and I'd like to stay where I am, meaning continue using VPN Client 2.5.6.005 with Mac OS 10.5.8
It seems like the ASA is trying to upgrade the AC client on your system. You can create a client XML profile , map it with the client's group-policy and define that "auto update" should be turned off as shown:-
This will prevent users to update the anyconnect client version. Hope that helps.
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...