Slow SSL-VPN Logon/Authentication

Hi there

We are using SSLVPN successfully however I note that the actual authentication time is pretty slow - it takes around 30-40seconds from when we please Enter, to actually authenticate a user and connect to the VPN. Once we are connected it works as per normal.

Any ways to speed up the connection to the VPN at all? Or how could I troubleshoot the authentication speed?

Thanks alot