Permitting certain content for Intranet users only

[SpecOpsX]

Hello, I have an idea and I'd like to know if it's possible, and if it is, how it might be done.

I run both an Intranet (internet network site) and an internet website. Right now their both seperate, but I'd like to make the two tie in together more.

So here's my proposal:

If a public viewer from outside the intranet goes to our website, he'll get just the regular navigation and site... however, if a person who is within the intranet network goes to the same public site, I'd want it to show an extra navigation with Intranet only links.

Is there anyway to do this?

Thanks!

[Reli4nt]

If you give the user the option to login the you can create a session variable for them upon successfully doing so. Then on each page check for this session variable and if present display the extra navigation.

Users who don't log in will only ever see the default navigation.