A secure network navigation system includes a secure network portal and a site-to-site authenticator. The secure network portal includes a network authenticator to authenticate a user's browser connection to access content at a first site on the secure network. The site-to-site authenticator creates an object that authenticates the user's browser connection, creates a transfer URL by which the user is to access content on a second site of the plural network sites on the secure network. The transfer URL includes values exported from the created object and a unique transfer token. The site-to-site authenticator then transfers the user's browser connection to an address corresponding to the transfer URL. The secure navigation from the first site to the other site on the secure network is transparent to the user.