Cannot login to an ASA 5520 using asdm or SSH just hangs on the login screen. This has been working fine for the last few months. I can still connect to the ASA via telnet from the one permitted ip address. Do I need to enter a 'crypto key generate rsa' command?
There have been no recent changes to the device is this something that can break or needs renewing periodically?
Thank you - I'm still not certain what the problem was - the ASDM and SSH had been working on this device and just failed one morning with no changes having been made to the config. I backed up the running config and copied it to a spare ASA ssh and ASDM worked fine on that. I rebooted the faulty asa this morning and everything is fine again can use ASDM and SSH to it. Would applying your command:
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...