linux pppoe拨号上网

安装软件和修改配置文件：

[root@cv ~]# yum -y install rp-pppoe

[root@cv ~]# cp /usr/share/doc/rp-pppoe-3.11/configs/pppoe.conf /etc/ppp/

[root@cv ~]# cat /etc/ppp/pppoe.conf | grep -v ^# | grep -v ^$ 修改配置文件

ETH=ens37

USER=sj205

DEMAND=no

DNSTYPE=SERVER

PEERDNS=yes

DNS1=

DNS2=

DEFAULTROUTE=yes

CONNECT_TIMEOUT=30

CONNECT_POLL=2

ACNAME=

SERVICENAME=

PING="."

CF_BASE=`basename $CONFIG`

PIDFILE="/var/run/$CF_BASE-pppoe.pid"

SYNCHRONOUS=no

CLAMPMSS=1412

LCP_INTERVAL=20

LCP_FAILURE=3

PPPOE_TIMEOUT=80

FIREWALL=NONE

LINUX_PLUGIN=

PPPOE_EXTRA=""

PPPD_EXTRA=""

输入账号密码：

[root@cv ~]# cat /etc/ppp/pap-secrets 、

# Secrets for authentication using PAP

# client server secret IP addresses

“sj205” * “88886666”

拨号成功：

[root@cv ~]# pppoe-start

[root@cv ~]# pppoe-status

pppoe-status: Link is up and running on interface ppp0

6: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1480 qdisc pfifo_fast state UNKNOWN group default qlen 3

link/ppp

inet 173.0.6.83 peer 173.0.0.1/32 scope global ppp0

valid_lft forever preferred_lft forever

[root@cv ~]# ifconfig ppp0

ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1480

inet 173.0.6.83 netmask 255.255.255.255 destination 173.0.0.1

ppp txqueuelen 3 (Point-to-Point Protocol)

RX packets 4 bytes 198 (198.0 B)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 138 bytes 6872 (6.7 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

配置代理内网上网：

[root@cv ~]# iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE

[root@cv ~]# iptables-save >> /etc/sysconfig/iptables

[root@cv ~]# systemctl enable iptables

[root@cv ~]# echo “net.ipv4.ip_forward=1” >> /etc/sysctl.conf

[root@cv ~]# sysctl -p

[root@cv ~]# echo “pppoe-start” >> /etc/rc.local

[root@cv ~]# chmod o+x /etc/rc.d/rc.local

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