求教cisco1841如何配置？ 外接电信拨号，内接交换机，20台电脑左右，家用tplink小路由老被爆。。

interface GigabitEthernet0/0（外网口） no ip address duplex auto speed auto pppoe enable group global pppoe-client dial-pool-number 1interface Dialer1 ip address negotiated ip mtu 1492 ip nat outside ip virtual-reassembly max-reassemblies 1024 encapsulation ppp dialer pool 1 ppp pap sent-username 18963(宽带用户名） password 7 13544（密码）interface GigabitEthernet0/1（内网口） ip address 192.168.10.1 255.255.255.0（内网网段） ip nat inside ip virtual-reassembly duplex auto speed autoaccess-list 1 permit 192.168.10.0 0.0.0.255ip nat inside source list 1 interface Dialer1 overloadip route 0.0.0.0 0.0.0.0 Dialer1