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I've downloaded and installed SDM v2.5 on my pc to access router 857. It works fine. But the issue is that I am unable to see the tab Application Security tab under Firewall and acl.
We had problems with the PIX GUI with various versions of Java. We found the latest version that works is J2RE 1.4.2. I think it's now end of life but you should be able to get a copy from the Oracle Archives.