How to see VPN connection statistics

I don't know if this option was also available in Snow Leopard, but if you are on Lion you could try the following:

1. Set up the native cisco client - if you don't know how, you can use this handy guide I created a few days back
2. Once you have tried and confirmed that everything works, your VPN connection should show up as one of the options in the Internet Sharing part of Preferences Sharing.
3. select the connection, choose on which network connection you'd like to share it and you're done.

You can use these wonderful bash functions from @slhck at Super User:

To connect to different VPNs, have multiple VPNs in Network.prefpane.

function vpn-connect {
/usr/bin/env osascript <<-EOF
tell application "System Events"
        tell current location of network preferences
                set VPN to service "UniVPN" -- your VPN name here
                if exists VPN then connect VPN
                repeat while (current configuration of VPN is not connected)
                    delay 1
                end repeat
        end tell
end tell
EOF
}

function vpn-disconnect {
/usr/bin/env osascript <<-EOF
tell application "System Events"
        tell current location of network preferences
                set VPN to service "UniVPN" -- your VPN name here
                if exists VPN then disconnect VPN
        end tell
end tell
return
EOF
}

^{Don't forget to change the name of the VPN.}