Below is a sample configuration of a PPPoE configuration for a WAN DSL connection into an AR series NGFW. This is not intended for use as a universally applicable template, but as a sample of a possible PPPoE configuration that has been tested and deployed. Configuration parameters will vary based on your ISP's configuration requirements.
| CONFIGURATION | COMMENTS | | | | | zone WAN | configure a zone for external/public traffic | | network Internet | | | ip subnet 0.0.0.0/0 interface ppp0 | | | | | | interface eth1 | enable PPP encapsulation on the physical WAN interface | | encapsulation ppp 0 | | | | | | interface ppp0 | configure the virtual PPP interface per ISP parameters | | keepalive attempts 10 | | | ip address negotiated [IP Address] | | | ppp username newcustomer@qwest.net | | | ppp password P@$$w0rd | | | ip tcp adjust-mss 1452 | adjust MSS to account for standard PPPoE MTU of 1492 bytes instead of 1500 | | | | | ip route 0.0.0.0/0 ppp0 | set the default gateway to use the PPPoE interface | | | | | interface vlan100 | adjust MSS on the LAN network(s) to account for PPPoE MTU of 1492 bytes | | ip address 192.168.0.1/24 | instead of 1500 | | ip tcp adjust-mss 1452 | |
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