the windows security dialog box provides informations such as the user account currently logged on and the domain or computer to which the is logged on. this information is important for users with multiple user accounts, such as a user who has a regular user account as well as a user account with administrative privileges.
you access the windows security dialog box by pressing ctrl+alt+delete if the computer is joined to a domain or the welcome screen is disabled, otherwise the task manager will be activated.
lock computer
allow users to secure the computer without logging off. all programs remain running. users should lock their computers when they leave for a short time. the user who locks the computer can unlock it by pressing ctrl+alt+delete and entering the valid password. an administrator can also unlock a locked computer. this process logs off the current user.
logoff
allows a user log off as the current user and close all running programs, but leaves windows xp professional running.
shutdown
allows a user to close all files, save all operating system data, and prepare the computer so that it can be safely truned off.
change password
allows a user to change his or her user account password. the user must know the current password to create new one. this is the only way users can change their own password.administrators can also change the password.
task manager
provides a list of the programs that are running and a summary of overall cpu and memory usage, as well as a quick view of how each program, program components, or system process is using the cpu and memory resources.users can also use task manager to switch between programs and to stop a program that is not responding.
cancel
closes the windows security dialog box
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Wednesday, June 24, 2009
domains
a domain is a logical grouping of network computers that share central directory database. a directory database contains user accounts and security informations for the domain.this database known as the directory and is the database portion of active directory service.
in a domain the directory resides on computers that are configured as domain controllers. a domain controller is a server that manages all security related aspects of user and domain interactions, centralizing security and administration.
the steps in the authentication process are as follows
in a domain the directory resides on computers that are configured as domain controllers. a domain controller is a server that manages all security related aspects of user and domain interactions, centralizing security and administration.
the steps in the authentication process are as follows
- the user logs on by providing logon information, such as username and password, and windows xp professional forwards this information to the security subsystem of that local computer.
- windows xp professional compares the logon informations with the user informations in the local security database, which resides in the security subsystem of the local computer.
- if the information matches and the user account is valid, windows xp professional creates access token for the user. an access token is the users identification for that local computer. it contains the users security settings, which allow the user to gain access to the appropriate resources on that computer and to perform specific system tasks.
workgroups (peer-to-peer)
a windows xp professional workgroup is a logical grouping of networked computers that share resources, such as files and printers. a workgroup is also called a peer-to-peer network because all computers in the workgroup can share resources as equals (peers) without a dedicated server.
each computer in the workgroup maintains a local security database, which is a list of user accounts and resource security information for the computer on which it resides.therefor using a local security database decentralizes the administration of user accounts and resource security in a workgroup.
workgroups have decentralized administration and security, the following are true.
a workgroup provides the following advantages
each computer in the workgroup maintains a local security database, which is a list of user accounts and resource security information for the computer on which it resides.therefor using a local security database decentralizes the administration of user accounts and resource security in a workgroup.
workgroups have decentralized administration and security, the following are true.
- a user must have a user account on each computer to which he or she wants to gain access.
- any changes to user accounts such as changing a users password or adding a new user account, must be made on each computer in the workgroup.if you forget to add new user account to one of the computers in your workgroup, the new user will not be able to log on to that computer and will unable to access resources on it.
a workgroup provides the following advantages
- it does not require inclusion of a domain controller in the configuration to hold centralized security informations.
- it is simple to design and implement. it does not require the extensive planning and administration that a domain require.
- it is a convinient networking environment for a limited number of computers in close proximity. however a workgroup becomes impractical in environments with more than 10 computers.
Sunday, June 21, 2009
setup outlook 2007 for gmail forwading
enable POP in Gmail
- Sign in to Gmail.
- Click Settings at the top of any Gmail page.
- Click Forwarding and POP/IMAP.
- Select Enable POP for all mail or Enable POP for mail that arrives from now on.
- it is always recommend to keep gmail copy in the inbox
- click save settings.
- Open Outlook.
- Click the Tools menu, and select Account Settings...
- On the E-mail tab, click New...
- If you are prompted to Choose E-mail Service, select Microsoft Exchange, POP3, IMAP, or HTTP, and click Next.
- Fill in all necessary fields to include the following information
- Your Name: Enter your name as you would like it to appear in the From: field of outgoing messages.
- Email Address: Enter your full Gmail email address (username@gmail.com)
- Password: Enter your email password.
- select Manually configure server settings or additional server types
- Verify your User Information, and enter the following additional information
- Account Type: POP3
- Incoming mail server: pop.gmail.com
- Outgoing mail server (SMTP): smtp.gmail.com
- in the Logon Information
- User Name: Enter your Gmail username (including @gmail.com)
- Password: Enter your Gmail password.
- Click the More Settings... button, and select the Outgoing Server tab.
- Check the box next to My outgoing server (SMTP) requires authentication and select Use same settings as my incoming mail server.
- Click the Advanced tab, and check the box next to This server requires an encrypted connection (SSL) under Incoming Server (POP3).
- In the Outgoing server (SMTP) box, enter 587 and select TLS from the drop-down menu next to Use the following type of encrypted connection:
- Click OK.
- Click Test Account Settings... After receiving 'Congratulations! All tests completed successfully', click Close.
- Click Next, and then click Finish.
Congratulations! You're successfully configured your client to send and retrieve Gmail messages.
setup outlook 2003 for gmail forwading
enable POP in Gmail
configure outlook 2003
- Sign in to Gmail.
- Click Settings at the top of any Gmail page.
- Click Forwarding and POP/IMAP.
- Select Enable POP for all mail or Enable POP for mail that arrives from now on.
- it is always recommend to keep gmail copy in the inbox
- click save settings.
configure outlook 2003
- Open Outlook 2003
- Click the Tools menu, and select E-mail Accounts...
- Click Add a new e-mail account, and click Next.
- Choose POP3 as your server type by clicking the radio button, and click Next.
- carefully fill the below informations in the setup page
- Your Name: Enter your name as you would like it to appear in the From: field of outgoing messages.
- Email Address: Enter your full email address
- Incoming mail server (POP3): pop.gmail.com
- Outgoing mail server (SMTP): smtp.gmail.com
- User Name: Enter your Gmail username (including @gmail.com)
- Password: Enter your gmail password
- Click More Settings... and then click the Outgoing Server tab.
- Check the box next to My outgoing server (SMTP) requires authentication and select Use same settings as my incoming mail server
- Click the Advanced tab, and check the box next to This server requires an encrypted connection (SSL) under Incoming Server (POP3) (the value field became 995 automatically,this is ok)
- Check the box next to This server requires an encrypted connection (SSL) under Outgoing Server (SMTP), and enter 465 in the Outgoing server (SMTP) box.
- Click OK
- Click Test Account Settings... After receiving Congratulations! All tests completed successfully, click Close
- Click Next, and then click Finish
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