OSPF Neighbor Authentication

                                    OSPF Neighbor Authentication

          {We use MD5 Authentications instead of Clear text}

                                {OSPF Authentication}

Ø  Router1(config-router)#router ospf 1

Ø  Router1(config-router)#area 0 authentication

{Interfaces Authentication}

Ø  Router1(config-if)#interface serial 1/1

Ø  Router1(config-if)#ip ospf authentication message-digest

Ø  Router1(config-if)#ip ospf message-digest-key 10 md5 cisco

{10:- key ID (Any ID but Same in All Routers}

Ø  Router1(config)#interface serial 1/0

Ø  Router1(config-if)#ip ospf authentication message-digest

Ø  Router1(config-if)#ip ospf message-digest-key 10 md5 cisco

{10:- key ID (Any ID but Same in All Routers}

Ø  Router2(config-router)#router ospf 1

Ø  Router2(config-router)#area 0 authentication

Ø  Router2(config-router)#exit

Ø  Router2(config-if)#interface serial 1/0

Ø  Router2(config-if)#ip ospf authentication message-digest

Ø  Router2(config-if)#ip ospf message-digest-key 10 md5 cisco

{10:- key ID (Any ID but Same in All Routers}

Ø  Router3(config-router)#router ospf 1

Ø  Router3(config-router)#area 0 authentication

Ø  Router3(config-router)#exit

Ø  Router3(config-if)#interface serial 1/1

Ø  Router3(config-if)#ip ospf authentication message-digest

Ø  Router3(config-if)#ip ospf message-digest-key 10 md5 cisco

{10:- key ID (Any ID but Same in All Routers}