VPNC without a group ID?

The cisco IPSEC vpn I’m trying to connect to doesn’t use a group/ipsec ID. It has to be blank when I setup this connection on my mac. Is there anyway to not require the group name? When I hit enter with no answer on just the group name I get the error below:

vpnc: response was invalid [1]: (ISAKMP_N_INVALID_EXCHANGE_TYPE)(7)

Got it working with this guide:

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