Move CA from Win2K3 to Win2012R2 - how to configure ASA
i've a littel problem with a ASA in combination with a Microsoft CA.
First, i will describe you the enviroment we have which works
CERTSRV => A Windows Server 2003 Server, with CA in Standanlone, activated NDES / SCEP Service and a RADIUS / IAS Service to let the ASA authenticate VPN User against the local Window User. The CA Root Cert has a key lenght of 512bit
Our goal is the move the CA and the RADIUS to a Windows 2012 R2 Server. Due the restriction of the windows 2012 ca to reject ca certs which less the 1024 bit we cannot simply import the current ca cert-pair into the new ca.
Also we wont upgrade the ca key-pair on our current win2k3 ca, because we cannot estimate the side-effects and the ASA VPNs must work.
So we came to fabulos idea to clone the win2k3 CERTSRV into VM. there we generate a new key-pair with 1024bit length. Then export this key, export the database from live system and import both successfully into the new 2012 R2 CA. SCEP and NAP Services are installed and tested succesfully. We are able to create a new client cert with SCEP.
Our actual problem is that we dont know how to handle the new, upgraded CA in the ASA Configuration.
I added the new CA in the CA Certificates Menu
Here is the relevant part of the ASA log (debug level)
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...