SSH Configuration guide

Question 1

The whole order of SSH configuration has how many parts ?

and what are they ?

Answer 1

1 - Hostname
2 - ip Domain-name
3 - crypto key generate RSA [512] 1024
4 - ip ssh version 2
5 - username \_\_\_ password/secret \_\_\_\_\_
6 - line vty 0-15
    transport input all or ssh
7 - Login Local

Question 2

1. step 1 is ?

Answer 2

1. > host name ____ - this is needed

With out the host name you can not configure SSH as it is needed to generate the security keys and self generated certificate

Question 3

2. step 2 is ?

Answer 3

2. > ip domain-name ___

- Host name and this are 2 things needed for the self generated certificate

Question 4

3. step 3 is ?

Answer 4

3. > crypto key generate RSA 1024

• generate encrypted keys - Public & Private Key
• Sym 64, 128, 256 bits.
  Default is suggested 512 this is asymmetric key set

Question 5

4. step 4 is ?

Answer 5

4. > iP ssh version 2

- This enable SSH & Key

Question 6

5. step 5 is ?

Answer 6

5. > Username ____ password ______
   - Create Local user account & password

or. > username ____ secret ________
- same as enable secret hides password & MD5 hashing

Question 7

6. step 6 is ?

Answer 7

6. • Allow telnet or ssh or both. ssh only disables telnet

> Line vty 0 - 15
transport input ___ all or ssh,telnet

7. Login
   > login Local or Tacacs
   - username & password from local database

Question 8

What does the command do:

> crypto key generate RSA 1024

Answer 8

3. > crypto key generate RSA 1024

• generate encrypted keys - Public & Private Key
• Sym 64, 128, 256 bits.
  Default is sugeested 512 this is asymmetric key set

Question 9

What does the command do:

> iP ssh version 2

Answer 9

• enable SSH & Key

Question 10

What does the command do:

> login Local

Answer 10

• username & password from local database for the current login config