Do employees working at clients sites need direct connection to access CACINet?

No. A direct connection to CACI's private network is not required to access CACInet - it can be reached directly over the Internet. Our Corporate Information Systems (CIS) team can provide special hardware and software that allows secure access to CACInet without infringing upon client restrictions. There are three things you will need for this access

A computer with access to the Internet
A CIS provided token, which is a small device that supplies a dynamic and secure password to log on to CACInet
A CACI network account