I recently upgraded some ASA firewalls to version 8.3(2) and ASDM 6.3(2). ASDM relies on JAVA to work. I had JAVA 1.6.0(20) installed on my Windows 7 laptop but ASDM would not work with this version. What’s strange and very lame is that when you try to connect to the firewall with ASDM and the JAVA version is not OK nothing happens. The page just times out, no error message or anything. So you start to think┬áthat you have configured something wrong but no you haven’t. I had to downgrade to 1.6.0 to get it to work. Surely Cisco could output an error message or a tool for testing if your JAVA is OK. Rant over… ­čÖé

Caveats with new Java versions for Cisco ASA
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