Tuesday, October 14, 2014
Cisco ASA: Downgrade From 9.0(3) To 8.4(5)
While at a customer site late night, we were going to do an upgrade on the cluster of ASAs from 8.4(5) to 9.0(3). However, because we interrupted a project implementation that we didnt know about, we had to revert back. Mainly because the upgrade interrupted their anyconnect VPN access and brought it down completely. So after some troubleshooting, I found that the webvpn config got taken out when either when I reverted back to 8.4(5) or when the upgrade was done. Im not sure when it was, but I do know that when we were back to the original 8.4(5) code, the webvpn config was missing. Interesting for sure, but that was an experience to be aware of for me.