Yes, it on the same network. Everything on Cisco network will work - apps, connection to Eng servers etc. Proximity will either not connect or if it connects it will disconnected randomly and then won't connect. Are there any device logs etc.? which ...
How many SEP modules do you have in the VPN 3030? This model support 1500 Simultaneous IPsec Users with max device memory and SEP-E modules. Please refer to link for more details - http://www.cisco.com/en/US/prod/collateral/vpndevc/ps5743/ps5749/ps2...