Hi all. I just upgraded an ASA5505 that I had SSH access to, from the outside interface. I just did a IOS upgrade on it to 8.0 and how I cant SSH into it anymore. I can vpn in, but cant SSH. Does it change something when an upgrade is done so that you have to redo the SSH portion again?
Assuming you have the proper access-list in place I'd re-generate the SSH key pair and check the version of SSH your client software is using, i.e. 1 or 2, and make sure your encryption threshold isn't set higher than your firewall license supports, i.e. firewall only has a 3DES license and your client software is trying to force AES.
Yeah, Im pretty sure its not my ssh client trying to force AES. As I stated earlier, I was able to SSH in before the upgrade.
With that said, I am now able to get to the ASA via SSH. Not sure what happened, but a little while later, I was able to get into it without issue. Again, I dont know exactly what happened, but its working again. Thanks.
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...