怎么破解cisco路由器的密碼

　　怎么破解cisco路由器的密碼?互聯網規模的不斷擴大以及各種大數據量業務的出現對路由器分組處理能力的要求大大提高。路由器不再是簡單的轉發報文，還需要在處理過程中考慮服務質量、流量整型、預測和防止網絡擁塞等問題。下面就由www.httjzl.cn來給大家說說怎么破解cisco路由器的密碼吧，歡迎大家前來閱讀!

　　怎么破解cisco路由器的密碼

　　破解密碼原則 只刪除密碼不破壞配置

　　1 重啟 路由器 按 ctrl + pause break 鍵 進入mini IOS

　　2 修改寄存器值改變啟動次序

　　rommon 1 > confreg 0x2142

　　3 在mini IOS下重啟路由

　　rommon 2 > reset

　　System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)

　　Copyright (c) 2000 by cisco Systems, Inc.

　　cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory

　　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 (tm) C2600 Software (C2600-I-M), Version 12.2(28), RELEASE SOFTWARE (fc5)

　　Technical Support: http://www.cisco.com/techsupport

　　Copyright (c) 1986-2005 by cisco Systems, Inc.

　　Compiled Wed 27-Apr-04 19:01 by miwang

　　cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory

　　.

　　Processor board ID JAD05190MTZ (4292891495)

　　M860 processor: part number 0, mask 49

　　Bridging software.

　　X.25 software, Version 3.0.0.

　　2 FastEthernet/IEEE 802.3 interface(s)

　　2 Low-speed serial(sync/async) network interface(s)

　　32K bytes of non-volatile configuration memory.

　　16384K bytes of processor board System flash (Read/Write)

　　--- System Configuration Dialog ---

　　Continue with configuration dialog? [yes/no]: n

　　Press RETURN to get started!

　　Router>

　　看這里進入系統之后 直接就進入了用戶模式 沒要密碼

　　Router>en

　　Router#copy start run

　　Destination filename [running-config]?

　　552 bytes copied in 0.416 secs (1326 bytes/sec)

　　ru1#

　　我們 輸入enable 進入特權模式 輸入命令 copy start run 從NVRAM 里面調用配置到內存中

　　下一步更換密碼

　　ru1#conf t

　　Enter configuration commands, one per line. End with CNTL/Z.

　　ru1(config)#line console 0

　　ru1(config-line)#pass admin

　　ru1(config-line)#login

　　ru1(config-line)#exit

　　ru1(config)#line vty 0 4

　　ru1(config-line)#pass admin

　　ru1(config-line)#login

　　ru1(config-line)#exit

　　ru1(config)#enable pass admin

　　ru1(config)#enable secret admin

　　ru1(config)#service password-encryption

　　比如說我們將密碼修改為admin 實驗環境下 只采用這一個密碼

　　下一步 更改寄存器值 恢復到正常的啟動次序

　　ru1(config)#config-register 0x2102

　　下一步 保存配置到NVRAM里面

　　ru1(config)#exit

　　%SYS-5-CONFIG_I: Configured from console by console

　　ru1#copy run start

　　Destination filename [startup-config]?

　　Building configuration...

　　[OK]

　　ru1#

　　重啟一下

　　ru1#rel

　　Proceed with reload? [confirm]

　　%SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.

　　System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)

　　Copyright (c) 2000 by cisco Systems, Inc.

　　cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory

　　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 (tm) C2600 Software (C2600-I-M), Version 12.2(28), RELEASE SOFTWARE (fc5)

　　Technical Support: http://www.cisco.com/techsupport

　　Copyright (c) 1986-2005 by cisco Systems, Inc.

　　Compiled Wed 27-Apr-04 19:01 by miwang

　　cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory

　　.

　　Processor board ID JAD05190MTZ (4292891495)

　　M860 processor: part number 0, mask 49

　　Bridging software.

　　X.25 software, Version 3.0.0.

　　2 FastEthernet/IEEE 802.3 interface(s)

　　2 Low-speed serial(sync/async) network interface(s)

　　32K bytes of non-volatile configuration memory.

　　16384K bytes of processor board System flash (Read/Write)

　　%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

　　%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

　　%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up

　　%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to administratively down

　　%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down

　　%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down

　　Press RETURN to get started!

　　User Access Verification

　　Password:

　　ru1>en

　　Password:

　　ru1#