I have a my website on Dev environment which is not on public , how can Adobe reach it .
Currently from public domain am reaching it using login credential , How can I incorporate these credentials on adobe analytics properties to use them.
Adobe Analytics servers should not have access to your dev environment because the data is pushed (sent) rather than pulled.
If adobe collection server is accessible from the private web, then the data collection will work as expected. Just ping the collection server you are using in your implementation or try to open one of these domains: omtrdc.net, 2o7.net.