How To Set A Password And Enable Telnet Access To A Cisco Router

To change the Defualt password (in Cisco routers the defualt usename and password is cisco) on a Cisco router and Enable Telnet access to the router we need to type the following commands:

router#config t
Router(config)#enable secret mypassword

Set VTY password (Telnet)

Router(config)#line vty 0 15
Router(config-line)#password mypassword

How To Enable Cisco SDM On Cisco 2800 Router

Since Cisco released Cisco IOS version 14 we can now apply and manage the router configuration using a GUI.

By defualt the Cisco SDM GUI is disable, In order to unable the GUI we need to apply a few commands to the router.

To enable the SDM GUI:

Log into the router and type:

Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# ip http server
Router(config)# ip http secure-server
Router(config)# ip http authentication local end
Router(config)# ip http timeout-policy idle 600 life 86400 requests 10000

The last command will change the defualt user name and password which is cisco for username and cisco for password.


Router(config)# username username privilege 15 secret 0 password


Router(config)# username admin privilege 15 secret 0 newpassword

The last step is to access the router using the web browser:


With Cisco 2800 series pre configured routers we also need to remove the defualt ACL which block access to the router.






View Exchange 2007 Users Mailbox Size

In order to view all users mailboxes size in Exchange 2007 in one list like Exchange 2003 Server we need to use the Exchange Managment Shell.

View all the users mailbox size:

1. Go to Exchange Managment Shell amd type:

get-mailboxstatistics | fl displayname,totalitemsize

 To view other mailboxes information type:


The C:windowsServicePackFiles Folder

The C:windowsServicePackFiles Folder stores all the copies the service packs which are used by windows 2003 system for file version.

The C:windowsServicePackFiles Folder stores all the copies the service packs which are used by windows 2003 system for file version.

Allow local servers to relay through Exchange 2003 /2000

To enable a local server relay mail through exchange server we need to add the local server to the Exchange server allowed relay servers list.

To add a server to the Relay list:

Open Exchange system Manger – > Administrative tools –> First administrative group -> Server -> Click on the Exchange server -> Protocols -> SMTP -> Right Click on Default SMTP Virtual Server -> Properties -> click on Access Tab – > click on Relay button -> Add the server to the “only the list below” list.

Error message “Target Principal Name is Incorrect” When Manually Replicating Data Between Domain Controllers

When trying to replicate data between Domain Controllers you receive the above error message.

In order to resolve the issue there is need to reset the secure channels between the domain controllers and the PDC Emulator.

Reset the secure channels from the domain controller that is NOT the PDC server.

  1. Stop and Disable the KDC service
  2. In the server that is not the PDC server run the command:

netdom resetpwd /server:server_name /userd:domain_nameadministrator
3. Restart server and enable the KDC service.

For more information visit MS KB:


Installingenable Anti-Spam in Exchange 2007

To install the new Anti Spam filtering software on Exchange 2007 please please follow the following.

Open Exchange PowerShell from the start menu.
Navigate to “Programs FilesMicrosoftExchange serverScripts folder
Type the following command:

restart the Microsoft Exchange Transport service

Open the Exchange Management Console, and on the Organization configuration list, select Hub Transport. The “Anti-Spam” tab has been added to the Hub Transport properties.