Connect using PPPOE connection on Ubuntu 14.04

Ensure local interface is configured. 

sudo nano /etc/network/interfaces
# WAN for PPPOE
auto eth1
#iface eth1 inet dhcp

# LAN
auto eth0
iface eth0 inet static
address 192.168.1.250
network 255.255.255.0

 

Follow the screen after pppoeconf command

sudo pppoeconf

Say yes on this configure on /etc/ppp/peers/dsl-provider

Enter your username (provided by your ISP).
Enter your password (provided by your ISP).
If you already have a PPPoE Connection configured, you will be asked if it may be modified.
Popular options: you are asked if you want the ‘noauth’ and ‘defaultroute’ options and to remove ‘nodetach’ – choose “Yes”.
Use peer DNS – choose “Yes”.
Limited MSS problem – choose “Yes”.
When you are asked if you want to connect at start up, you will probably want to say yes. (This option does not work)
Finally you are asked if you want to establish the connection immediately.

 

Enable Forwarding.

sudo vim -c '%s/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/gc' -c 'wq' /etc/sysctl.conf
sudo sysctl -p

 

View existing login ID & password

sudo cat /etc/ppp/chap-secrets
sudo cat /etc/ppp/pap-secrets

 

Ensure the file has the correct permissions. Sometimes the PPPoE Server won’t start if the file isn’t restricted enough

sudo chmod 600 /etc/ppp/chap-secrets

 

To start and stop your DSL connection

sudo pon dsl-provider
sudo poff dsl-provider

 

Reconnect when connection drops

sudo nano /etc/ppp/peers/dsl-provider
persist
sudo nano /etc/ppp/options
persist

 

You may add these to your /etc/rc.local

# Enable MASQUERADE
sudo iptables -t nat -A POSTROUTING -s 192.168.x.x/24 -o wan -j MASQUERADE

# DNS Server
sudo echo "nameserver 8.8.8.8" | sudo tee -a /etc/resolv.conf

# Set NIC speed and duplex full
sudo ethtool -s ethx speed 100 duplex full autoneg off

 

Troubleshooting:

plog
ifconfig ppp0

#Change speed to 100 only if 1000 doesn't work
sudo ethtool -s eth0 autoneg off speed 100 duplex full

 

You may comment out wan interface dhcp to speed up boot process 

sudo nano /etc/network/interfaces

auto ethx
# iface ethX inet dhcp

 

 

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