В данной статье рассматривается восстановление (забытых или утерянных) паролей на CISCO.
Пароль enable может быть восстановлен, пароль enable secret зашифрован, поэтому его можно только заменить.
Предполагается, что у Вас существует непосредственный доступ к консоли.
Следущая статья распространяется на следующие продукты:
Для поиска своего продукта воспользуйтесь сочетанием клавиш CTRL+F
*Cisco 806*Cisco 4700*Catalyst 2948G-L3*cisco 827*Cisco AS5×00*Catalyst 4840G*Cisco uBR900*Cisco 6×00*Catalyst 4908G-L3*Cisco 1003*Cisco 7000 (RSP7000)*Catalyst 5500(RSM)*Cisco 1004*Cisco 7100*Catalyst 8510-CSR*Cisco 1005*Cisco 7200*Catalyst 8510-MSR*Cisco 1400*Cisco 7500*Catalyst 8540-CSR*Cisco 1600*Cisco uBR7100*Catalyst 8540-MSR*Cisco 1700*Cisco uBR7200*Cisco MC3810*Cisco 2600*Cisco uBR10000*Cisco NI-2*Cisco 3600*Cisco 12000*Cisco VG200 Analog Gateway*Cisco 4500*Cisco LS1010*Route Processor Module*Cisco 1800*Cisco 2800*Cisco 3800*
К примеру Вы пытаетесь зайти в привилигированный режим (EXEC)
Код:Router>enable
Password:
Password:
Password:
% Bad secrets
Наберите команду
Код:Router>show version и узнайте версию вашего продукта.
Ключевым словом является Configuration register is.
Процедура восстановления пароля для Configuration register is 0×2102
Затем выключите и включите ваш маршрутизатор.
Во время загрузки (через 60 секунд после включения) нажмите клавишу Break
Клавиша Break для различных терминалов разная. Подробности тут: http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml
Должно появиться примерно следующее:
Код:!— The router was just powercycled and during bootup a
!— break sequence was sent to the router.
!
*** System received an abort due to Break Key ***
signal= 0×3, code= 0×500, context= 0×813ac158
PC = 0×802d0b60, Vector = 0×500, SP = 0×80006030
Далее наберайте последовательно команды:
Код:rommon 1 > confreg 0×2142
Появится сообщение:
You must reset or power cycle for new config to take effect – Вы должны набрать reset чтобы новая конфигурация применилась.
Далее
Код:rommon 2 > reset
При запросе Would you like to enter the initial configuration dialog? [yes/no]:
Нужно ответить n
Появится сообщение:
Код:System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
Copyright (c) 1999 by cisco Systems, Inc.
TAC:Home:SW:IOS:Specials for info
C2600 platform with 32768 Kbytes of main memory
program load complete, entry point: 0×80008000, size: 0×6fdb4c
Self decompressing the image : ###############################
##############################################################
##############################################################
##############################################################
############################### [OK]
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software – Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706
Cisco Internetwork Operating System Software
IOS ™ C2600 Software (C2600-IS-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Tue 07-Dec-99 02:21 by phanguye
Image text-base: 0×80008088, data-base: 0×80C524F8
cisco 2611 (MPC860) processor (revision 0×202) with 26624K/6144K bytes of memory.
Processor board ID JAB031202NK (3878188963)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
Basic Rate ISDN software, Version 1.1.
2 Ethernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash partition 1 (Read/Write)
8192K bytes of processor board System flash partition 2 (Read/Write)
— System Configuration Dialog —
Would you like to enter the initial configuration dialog? [yes/no]: n
Press RETURN to get started!
Далее последовательно вводим следующие команды:
Код:Router>enable
Router#copy startup-config running-config
Destination filename [running-config]?
1324 bytes copied in 2.35 secs (662 bytes/sec)
Router#
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#enable secret
Router(config)#^Z
00:01:54: %SYS-5-CONFIG_I: Configured from console by console
Затем смотрим состояние наших интерфейсов:
Код:Router#show ip interface brief
Пример:
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 10.200.40.37 YES TFTP administratively down down
Serial0/0 unassigned YES TFTP administratively down down
«Поднимаем» интерфейсы:
Код:Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int et 0 (сокращенная команда для interface Ethernet0/0)
Router(config-if)#no shutdown
Router(config-if)#
00:02:14: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up
00:02:15: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0,
changed state to up
Далее:
Код:Router(config-if)#^Z
Router#
00:02:35: %SYS-5-CONFIG_I: Configured from console by console
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration…
[OK]
Router#show version
Cisco Internetwork Operating System Software
IOS ™ C2600 Software (C2600-IS-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Tue 07-Dec-99 02:21 by phanguye
Image text-base: 0×80008088, data-base: 0×80C524F8
ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
Router uptime is 3 minutes
System returned to ROM by abort at PC 0×802D0B60
System image file is «flash:c2600-is-mz.120-7.T»
cisco 2611 (MPC860) processor (revision 0×202)
with 26624K/6144K bytes of memory.
Processor board ID JAB031202NK (3878188963)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
Basic Rate ISDN software, Version 1.1.
2 Ethernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash partition 1 (Read/Write)
8192K bytes of processor board System flash partition 2 (Read/Write)
Configuration register is 0×2142
Затем:
Код:Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#config-register 0×2102
Router(config)#^Z
00:03:20: %SYS-5-CONFIG_I: Configured from console by console
Router#show version
Cisco Internetwork Operating System Software
IOS ™ C2600 Software (C2600-IS-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Tue 07-Dec-99 02:21 by phanguye
Image text-base: 0×80008088, data-base: 0×80C524F8
ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
Router uptime is 3 minutes
System returned to ROM by abort at PC 0×802D0B60
System image file is «flash:c2600-is-mz.120-7.T»
cisco 2611 (MPC860) processor (revision 0×202)
with 26624K/6144K bytes of memory.
Processor board ID JAB031202NK (3878188963)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
Basic Rate ISDN software, Version 1.1.
2 Ethernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash partition 1 (Read/Write)
8192K bytes of processor board System flash partition 2 (Read/Write)
Configuration register is 0×2142 (will be 0×2102 at next reload)
Router#
Router#reload
Код:System configuration has been modified. Save? [yes/no]: y
Building configuration…
[OK]
Proceed with reload? [confirm]
