Setup PPPoE testing server
This guide will describe how to setup a PPPoE testing server using Debian 11.
Setup a clean Debian server 11 installation with at least one
ethernet interface and with Internet access.
Let’s assume the network interface is called enp1s0.
Install dependencies:
apt-get install pppoe iptables
Create test user with password password:
useradd test
echo -e "password\npassword\n" | passwd test
cat << EOF > /etc/ppp/chap-secrets
"test" * "password" 100.64.0.2
EOF
chmod 600 /etc/ppp/chap-secrets
Setup and start PPPoE server:
echo 100.64.0.2-30 > /etc/ppp/ipaddress_pool
cat <<EOF > /etc/ppp/pppoe-server-options
require-chap
login
lcp-echo-interval 5
lcp-echo-failure 0
ms-dns 1.1.1.1
netmask 255.255.255.0
defaultroute
noipdefault
usepeerdns
debug
logfile /var/log/pppoe-server.log
EOF
pppoe-server -C isp -L 100.64.0.1 -p /etc/ppp/ipaddress_pool -I enp1s0 -m 1412
Setup IP forward and masquerading:
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -F POSTROUTING
iptables -t nat -A POSTROUTING -o enp1s0 -j MASQUERADE
Reference: https://poundcomment.wordpress.com/2011/03/30/pppoe-server-on-ubuntu/
Setup VLAN tagged server
Install user space tool and load kernel module:
apt install vlan
modprobe 8021q
Setup VLAN, IP forward and masquerading:
echo 1 > /proc/sys/net/ipv4/ip_forward
ip link add link enp1s0 name enp1s0.100 type vlan id 100
ip link set dev enp1s0.100 up
iptables -t nat -F POSTROUTING
iptables -A FORWARD -i enp1s0 -o enp1s0.100 -j ACCEPT
iptables -t nat -A POSTROUTING -o enp1s0 -j MASQUERADE
Start the server:
pppoe-server -C isp -L 100.64.0.1 -p /etc/ppp/ipaddress_pool -I enp1s0.100 -m 1412
Setup OpenWrt PPPoE client
You can setup everything from the UI, but make sure to set an high value (eg. 100)
for LCP echo failure threshold field.
If you prefer the command line:
uci set network.wan.proto='pppoe'
uci set network.wan.username='test'
uci set network.wan.password='password'
uci set network.wan.ipv6=0
uci set network.wan.keepalive="100 5"
uci commit network
service network restart