I have a DMVPN with RSA certs (and an internal IOS CA Server on a router) that have been up for many months, however, recently, the spoke certs have started expiring. Since auto-renew is enabled, I granted the "pending" certs on the CA server but the spokes never were able to obatin their new certs even though the VPN tunnels were still up. Eventually, I ran out of time for troubleshooting and all tunnels expired and were torn down due to IKE failures because of expired certs.
Any idea why granting the certs didn't have any effect?
Some certificate authorities require you to generate a new key pair to renew a certificate, while other certificate authorities allow you to use the key pair of the expiring certificate to renew a certificate. Also note that some CA server requires new key being generated when renewing a certificate.
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...