. WIKIMERIONET
Merion Mertics , ,

- -
CRM

Cisco - 2

11

: Cisco - 1

Cisco , / . , . / - . / , Telnet SSH, (enable), enable.

/ , .3.

, . console 0, Telnet, vty 0 15. , - " local."

:

  • 1- username ulanbaby secret box
  • 2- username landy secret box

, , -, , /. , , -username < > secret <>. , ( ) Telnet, login local. , " ."

no password, vty, .

:

1. username < > secret <>, / .

2. / :

  1. line con 0 .
  2. login local, , /.
  3. () no password , .

3. Telnet (vty) / :

  1. 1. line vty 0 15 vty 16 vty ( 0 15).
  2. 2. login local, Telnet, /.
  3. 3. () no password , .

Telnet , , , , 4. / . .

Telnet

4 Cisco .

4 , , . , (configure terminal), (end). , (log). , (log) ; "ulanbaby".

/ , , . , , . , , , , .

, , . / , , , , , , .

Cisco , , , (authentication, authorization, and accounting)(AAA). / . AAA- .

/ .

AAA- ( ) AAA-, , , AAA- .

, / , AAA-, , , / .

AAA-

, " " Telnet SSH SW1. "AAA" RADIUS TACACS+. , , , () .

, , . , Telnet SSH. AAA- RADIUS TACACS+, , .

SSHl

Telnet, SSH. Telnet : Telnet , . , , (man-in-the-middle attack), . SSH , SSH- , .

SSH , Telnet, . (SSH , , .)

, Telnet, , SSH.

, SSH. , (. ) Telnet. , SSH .

SSH

, SSH . SSH. SSH , :

  1. hostname sw-1 ( )
  2. ip domain-name testing.com ( sw-1.testing.com)
  3. crypto key generate rsa.

(, Telnet) :

username ulanbaby secret box 
username landy secret man
line vty 0 15 
login local

IOS : SSH, SSH. SSH . . 5 ( , ). , crypto key generate rsa, SSH. IOS SSH-. , IOS SSH- vty.

, , SSH. , , crypto key ; modulus modulus-value crypto key, . 5 ssh ( , . 5) .

SSH

, , SSH, Telnet vty. , Telnet , Telnet, .

, vty, transport input {all | none / telnet / ssh} vty vty :

  • transport input all or transport input telnet ssh Telnet, SSH
  • transport input none:
  • transport input telnet: Telnet
  • transport input ssh: SSH

SSH, Cisco SSH . ( SSH IOS ; .)

, , vty, .

1. , :

  • , hostnamename .
  • , ip domain-namename .
  • crypto key generate rsa ( crypto key generate RSA modulus modulus-value, ) . ( 768- SSH 2.)

2. () ip ssh version 2 , SSH 1 2, SSHv2.

3. () , vty SSH Telnet.:

  • transport input ssh vty, SSH.
  • transport input all ( ) transport input telnet ssh vty, SSH, Telnet.

4. vty , .

Cisco transport input none. transport input line Telnet / SSH .

SSH . -, show ip ssh SSH-. show ssh SSH, . 6 , ULANBABY .

SSH

?

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