[melipla]

You can try to load up SmartView Monitor, under Gateway Status highlight the gateway in question. Depending on the type of gateway you should have two or three different numbers you can use:

VPN -> Remote user Tunnels
SecureClient Policy Server -> Connected Users

If for some reason you can't obtain these numbers from SmartView monitor you should at least be able to do a "vpn tu" from the gateway's cli and option 1 should give you the total number of tunnels.

To convert these numbers to a comparable dtps lic here are my ratios:

1 VPN -> Remote user Tunnels = 2.65 dtps lic
1 SecureClient Policy Server = 3.42 dtps lic
1 vpn tu -> "Peer x.x.x.x" line = 2.06 dtps lic

Definitely not an exact science as some of these options will have extraneous tunnels from non-users in their numbers but it should give you a rough estimate.