PPPoE and ASA - Internet access

Assumptions:

 - lan access configured

 - lan connected to ethernet0/1(vlan1)

 - configuration prepared for ASA 5505 but with small modification,especially on interfaces will work on ASA 5510

 

Rysunek1.png

  • 1.create vpdn group

 

(config)#vpdn group Bellnet request dialout pppoe

 

  • 2. create username for PPPoE connetion(user will be local in that case)

 

(config)#vpdn group Bellnet localname pppoe-username@bellnet.ca

  • 3.set authentication type for Bellnet vpdn group

 

(config)#vpdn group Bellnet ppp authentication pap

  • 4.set password for user pppoe-username@bellnet.ca

 

(config)#vpdn username pppoe-username@bellnet.ca password *****

  • 5.create interface vlan and configure it to use PPPoE

 

(config)#interface vlan 4

(config-if)#nameif backup
(config-if)#security-level 0
 (config-if)#pppoe client vpdn group Bellnet
(config-if)#ip address pppoe setroute

(config-if)#no shutdown


  • 6.assign interface vlan 4 to physical interface on ASA,in my case Eth0/3

 

(config)# interface ethernet 0/3

(config-if)# switchport access vlan 4


  • 7.set mtu for backup to 1492

 

(config)#mtu backup 1492

 

  • 8.configure natting

 

(config)#nat (inside) 1 x.x.x.x x.x.x.x

(config)#global (backup) 1 interface

x.x.x.x x.x.x.x is lan

  • 9.configure access-list on external(backup) interface and on local(inside),on local if possible.

 

rules configure based on your own needs

 

  • 10.test it and save config

 

 

dzbanek 2012-11-09

 

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