For a secure connection, you need to create a VPN connection from your home network to your office network.
Here’s a list of a few ways you can do this:
1. Setup an IPsec tunnel on your firewall
2. Use a Router to Router VPN from your office to your home
3. Install an SSL VPN or VPN concentrator
You can use <a href=”http://www.attachmate.com/Products/Terminal+Emulation/refweb/refweb.htm”>Attachmate Reflection for the Web</a> as another solution so you don’t need to have client access installed.