cisco路由器的密码破解

archer05

3 在mini IOS下重启路由　　rommon 2 > reset

　　System Bootstrap, Version 12.1(3r)T2,>　　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),>　　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>　　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>
　　看这里进入系统之后 直接就进入了用户模式 没要密码
　　Router>en
　　Router#copy start run
　　Destination filename [running-config]?
　　552 bytes copied in 0.416 secs (1326 bytes/sec)
　　ru1#
　　我们 输入enable 进入特权模式 输入命令 copy start run 从NVRAM 里面调用配置到内存中
　　下一步更换密码
　　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
　　比如说我们将密码修改为admin 实验环境下 只采用这一个密码
　　下一步 更改寄存器值 恢复到正常的启动次序
　　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#
　　重启一下
　　ru1#rel

　　Proceed with>
　　%SYS-5-RELOAD:>
　　System Bootstrap, Version 12.1(3r)T2,>　　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),>　　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>　　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#
　　最后解释一下 文中带下划线的为个人说明