КЛЮЧЕВЫЕ КОМАНДЫ:

1) на сервере:

username XXX privilege 0 password XXXX

crypto isakmp client configuration group XXXX
key XXXX
pool XXXX
save-password

2) на клиенте:

crypto ipsec client ezvpn XXXX
connect auto
group XXXX key XXXX
mode network-plus
username XXXX password XXXX
xauth userid mode local

interface FastEthernet4
crypto ipsec client ezvpn XXXX

interface Vlan1
  crypto ipsec client ezvpn XXXX inside