防火墙拨号设置：

# 创建拨号访问组，并配置拨号控制规则
dialer-group 1 rule ip permit

# 创建Dialer接口，并进入该Dialer接口视图
interface Dialer0
 mtu 1492
 ppp chap password simple ASFSKFAIF # 拨号密码
 ppp chap user 075507123456@163.gd  # 拨号账号
 ppp ipcp dns admit-any 
 ppp ipcp dns request 
 # 账号密码
 ppp pap local-user 075507301624@163.gd password cipher $c$3$Djdp9pjkTv3POzVgoa8xAzcdO7+4hkDYxH9w 
 dialer bundle enable
 # 绑定拨号访问组 1
 dialer-group 1
 dialer timer idle 0
 dialer timer autodial 5
 # 自动获取地址
 ip address ppp-negotiate
 tcp mss 1200
 nat outbound

# 建立一个PPPoE会话，并且指定该会话所对应的Dialer bundle
interface GigabitEthernet1/0/2
 port link-mode route
 description to-dia0
 ip last-hop hold
 # 绑定Dia 0口
 pppoe-client dial-bundle-number 0