QUOTE(aehrlich @ 8.06.2009 14:32)

While this will probably lead you to the "working state" it seems to be a little too hard, like burying down your house to get rid of the rats ;-).
However, if you do not need Kasperky firewall called AntiHacker (part of KIS and KAV Workstation) then just go do it (and uninstall the AntiHacker component of Kaspersky).
1. What is the OS and the VPN solution you use?
2. (The following assumes that either your Oracle server is accessible without VPN or you have already sorted out the VPN issue) Create a rule for your Oracle host; the easiest way to do it is to switch AntiHacker to the Training Mode (go to Settings | Protection | Anti-Hacker, then move the slider under the "Enable Firewall" checkbox until the slider label shows "Training Mode"). Now try to establish a connection to Oracle with the client software you use, an "Anti-Hacker: training" prompt will pop up; mark "create a rule", choose "Custom" as the action, push "Allow", UNmark "Local port" in the "properties", push OK.
i was follow your steps but still problem with VPN connection.
what i have done.
Step1.Uninstall kaspersky antivirus NDIS 6 filter in LAN CARD property
Step2.Add VPN ip in trusted zone
Step3.allow all network activity in firewall
Step4.Disable Firewall of kaspersky
Step5.Disable Anti Hacker
Step6.Add in Trusted Application in Protection setting
still vpn connection failed see for more details check attachment file.
how to solve this is issue i hope you reply me as soon as possible