OSPF Authentication for linux server

Dear Experts,


I 'm giving a last minute task to get a Linux server firewall authenticated with the backbone network that runs using OSPF.

Server information:


 lsb_release -a
No LSB modules are available.
Distributor ID:      Debian
Description:      Debian GNU/Linux 6.0.10 (squeeze)
Release:      6.0.10
Codename:      squeeze

I have this is the quagga config file

! Zebra configuration saved from vty
!   2008/09/03 11:04:04
!
!
!
!
interface bond0
!
interface eth0
 description to Logix Internet
!
interface eth1
 description to backbone
 ip ospf message-digest-key 1 md5 Lmxxxx <-- this is correct
!
interface eth2
 description to Blah Internet
!
interface eth3
 description to DMZ
!
interface gre0
!
interface ifb0
!
interface ifb1
!
interface lo
!
interface teql0
!
interface tunl0
!
router ospf
 network 10.2.1.0/24 area 0.0.0.0
 area 0.0.0.0 authentication message-digest

The server that is going to be a firewall now pings the Internet not the backbone. I think is because is not authenticating.

Any help is appreciated.