How to configure UC520 and VPN client to work together?

How to configure UC520 and VPN client to work together

I can not find any manual...

I use Cisco Configuration Assistant to configure VPN server
I create:
- user name
- password
-

On VPN I can not use all this stuff.

I need to open some ports on NAT?

Please refer to IOS manual

Please refer to IOS manual for "configuring remote vpn access".

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