I just started a few days ago playing with Cisco ISR.
I want to implement L2TP-IPsec server in a Cisco 1801, but I'm having dificulties adapting the suggested configuration at: http://www.cisco.com/en/US/docs/ios/security/configuration/guide/sec_l2tp_nat_pat_external_docbase_0900e4b1805b0507_4container_external_docbase_0900e4b1807b3707.html
For start, what would be the L2TP/IPsec client configuration for this example? Is there a User, pass, and IPSEC pre-shared key? Or only pre-shared key?