Where can I obtain the VPN Client to tunnel into the Social Sciences network

You can find the VPN Client for Windows OS, Mac 0SX, Linux, and Solaris here:

The SSC Virtual Private Network (VPN) Service allows you to access SSC resources as if you were part of the SSC Network. A VPN is a secured private network connection built on top of publicly accessible infrastructure. The SSC VPN has more stringent security parameters than the UCLA Campus VPN. This is necessary so that access can be tunneled through the SSC Firewall.