Ccna security Lab Securing the Router for Administrative Access


Securing the Control Plane



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Assignment #3-4 - Securing the Router for Administrative Access

Securing the Control Plane


In Part 5 of this lab, you will do as follows:

  • Configure OSPF routing protocol authentication using SHA256.

  • Verify that OSPF routing protocol authentication is working.

    1. Configure OSPF Routing Protocol Authentication using SHA256 Hashing.

      1. Configure a key chain on all three routers.


        1. Assign a key chain name and number.

R1(config)# key chain NetAcad

R1(config-keychain)# key 1



        1. Assign the authentication key string.

R1(config-keychain-key)# key-string CCNASkeystring

        1. Configure the encryption algorithm to be used for authentication, use SHA256 encryption.

R1(config-keychain-key)#cryptographic-algorithm hmac-sha-256

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