ASDM 6.25 returns "Firewall image has a version number null which is not support by ASDM"
We have 3 admins that have been using ASDM 6.25 just fine with all ASAs on version 8.0(519) and now I have a new admin that just tried to download ASDM 6.25 and he is receiving the error above. He is running the same OS and Java version as the rest of us so it makes no sense why it won't load for him. He has tried multiple ASAs and they all return the same error.
Any idea what is causing it? We already have the "fix" in place that is posted on your site.
Re: ASDM 6.25 returns "Firewall image has a version number null
ASDM must not be receiving the version data correctly from the ASA. Are you using ASDM launcher or a browser? I would start troubleshooting by gathering simultaneous debugs and packet captures. Compare this data to what is seen on working PCs.
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...
[toc:faq]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 and UDP are I...