cisco路由器的密码破解
3 在mini IOS下重启路由 rommon 2 > resetSystem 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 :
##########################################################################
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? : 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 ?
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 ?
Building configuration...
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 :
##########################################################################
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
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