Reset BIOS password

Steps to Reset BIOS password

1. Remove the CMOS Battery placed on the mother board for few second and place it again your BIOS will be set to default, you will find the Bios password broken.
2. On the Motherboard of the system there is jumper located inside its near the CMOS battery or near the processor Some motherboards have a 3 pin jumper located near the battery. Near the Jumper you may find PSWD written also the jumper is having 3 pins, jumper is on pins 2 and 3. Remove the jumper while the machine is OFF and place onto pins 1 and 2. Power on your machine for a minute. Shutdown your machine and put the jumper back to pins 2 and 3. Restart the computer your BIOS password is set to default.
3. Reset BIOS password through Command Prompt

Open Command Prompt,  Click Start Button > Run > Type CMD

Command prompt opens up type Debug click enter

Type the code: – o 70 10

o 71 20

Type quit

Exit

Password of BIOS is set to Default.
http://www.getcomputersolution.com/solution/how-to-reset-bios-password

All About DHCP Serve

What is DHCP

Dynamic Host Configuration Protocol (DHCP) is a network protocol that enables a server to automatically assign an IP address to a computer from a defined range of numbers (i.e., a scope) configured for a given network. The DHCP server can provide easily IP addresses to clients automatically so you don’t even need to configure and set options in the client side, all you need is to setup DHCP server, configure scope options and some other TCP/IP settings in the server side and that’s it. You can provide to your clients IP addresses from the selected range that you’ve configured and some other TCP/IP options.

DHCP allows you to manage the networks’ IP addresses scopes and other TCP/IP settings like DNS, Default Gateway, etc. from central place, this central place called DHCP server. The DHCP works from central place, so if there’s a problem, it’s probably from the server, so you know where to go in case of problem and you’re saving time.

DHCP server works on port 67 on DHCP Server, and on port 68 at DHCP Client.

How DHCP works?

The Steps how a DHCP client request from the DHCP server for a IP address to be connected to the network it follow the rule (DORA). The specific time tenure the lease of IP Address  provided by the DHCP Server to its clients.

The DHCP service works by using the DORA (Discover, Offer, Request and Acknowledgment)

1. DHCPDISCOVER – The client boots up it broadcast a DHCPDISCOVER packet in order to locate a DHCP server in the network, in some cases that the DHCP server isn’t in the same subnet of the client, you’ll need to configure in your network devices (Routers, Layer3 Switch) a DHCP Relay Agent, in order to transfer the DHCPDISCOVER packet to the DHCP server.
2. DHCPOFFER – The DHCP server broadcast a DHCPOFFER packet to the client which includes an offer to use a unique IP address for the client.
3. DHCPREQUEST – The client broadcast a DHCPREQUEST packet to the DHCP server with an answer from the server to provide a address.
4. DHCPACKNOWLEDGEMENT – The DHCP server broadcast a DHCPACKNOWLEDGEMENT packet to the client, and provide the IP address lease to the client and other details such as DNSservers, default gateway.

DHCP Scopes, Exclude and Reservation

DHCP Scope is a range of IP addresses that you configure in your DHCP server as range of addresses that designed for distribution to the clients.

You can also create more than one scope, At the scope creation process we can add more TCP/IP parameters such as subnet mask, IP addresses lease time, default gateway, DNS servers, etc. so when the clients gets the IP addresses they’ll get also the other parameters from the scope.

For exclusion of some IP Address range you can provide IP Address scope and exclude the DHCP to distribute the client.

There is a great feature In DHCP is Reservation we can specify a scope or a specific IP to a dedicated client that will be always assigned to that client and you can bind the MAC address with the IP.

DHCP & DNS

When you’re installing DHCP server you can configure the DHCP server to set DNS updates to any DNS server that support dynamic updates. More information about the combination between DHCP and DNS you can find right here.

Active Directory & DHCP Servers

In Microsoft Windows Server 2000 Server/Server 2003/2008 with Active Directory you need to authorize your server in order to work with the DHCP service.

DHCP Relay Agent

DHCP Relay Agent is any kind of Device (Router,L3 Switch) that listen to DHCP/BOOTP broadcast from clients on subnets without local DHCP servers.

DHCP Relay Agent is needed to forward packet from the client to the DHCP Server on different Network

How to install Remote Desktop Connection Manager

Using Remote Desktop Connection Manager

Microsoft Remote Desktop Manager is a program freeware to use and have may feature Like some of the third party tools (Dameware, VNC) it work on Terminal server Gateway using SSL for a secure connection. From Client side use MSTSC.exe to connect System.

Download Microsoft Remote Desktop Connection manager(RDCMan)

http://www.microsoft.com/downloads/en/confirmation.aspx?FamilyID=4603C621-6DE7-4CCB-9F51-D53DC7E48047&displayLang=en

For Windows XP Service Pack 3 download host Fix Remote Desktop connection 7.0 client (KB969085)

For Windows Vista RDC 7.0 Client update (KB969084)

After Download RDCMan click install

Click next and Finish.

Now click Start Button – Programs – Remote Desktop connection

OR Open Run – RDCMan from start menu.

First create a new connection file. Click on "File" > "New" and select the name and location of the file. You can later take this configuration file from one computer to another to use.

Once the connection file is in place,

Create a new group after right-clicking on the connections icon and selecting "Add  group".

Provide a name for the Group you created.

Now provide the Login Credentials as per you Network or Domain

Click Gateway settings, which allows you to connect to internal machines of your Domain by using one externally available Terminal Server (or Remote Desktop) Gateway.

Now you can configure the Screen Resolution accordingly.

Now we can have Remote Disk, Printer, Port and Clipboard Settings as per requirement. By Default only the clipboard is enabled.

Next, Add the Computer you want to connect. Right-Click the group and select “Add Server”.

Now Enter the Server name or IP Address and select “Connect Server”

You can add all the required server at the real time and you can connect the entire group at one by selecting Connect Group.

In connect Group you will find that all machines are now connected.

You can disconnect a single system or a group at once.

Before disconnecting the RDCMan save the connection file.

Migrate Active Directory Domain Controller from Windows Server 2003 to Windows Server 2008

Want to upgrade your domain controller Windows Server 2003 to Windows Server 2008

Important Steps to Follow:-

1. Raise Domain Functional Level
2. Prepare your current Windows 2003 Active Directory for Windows Server 2008 domain controllers.
3. Then, we will need to setup the server as an additional domain controller With Windows Server 2008.
4. Transfer FSMO roles to the Windows Server 2008 Domain Controller

Lets start the Migration

1. Raise Domain Functional Level We need to configure the domain to run in native mode.

• On the Windows Server 2003 Domain Controller, run Active Directory User and Computers snap-in by clicking on Start > Administrative Tools > Active Directory User and Computers
• Right Click the Domain Name node, then click on Raise Domain Functional Level

If you have Windows 2000 Active Directory domain controllers then choose Windows 2000 native, if you do not have any Windows 2000 Active Directory domain controllers and all of your domain controllers are Windows Server 2003, then choose Windows Server 20003. I will select Windows Server 2003 and then click the Raisebutton.

• A warning message will be displayed, informing you that the changes cannot be reversed. Click OK

• Functional level was raised successfully. Click OK

• Now Close the Active Directory User and Computers snap-in

2.  Prepare current Windows 2003 Active Directory

• Before you can have a 2008 server domain controller in your existing 2003 domain, we will need to prepare both the Forest Level and the Domain level, this is done by running the following commands on the Windows Server 2003 Domain Controller.
• Insert the Windows Server 2008 DVD inside the Windows Server 2003 DVD Drive
• Open Command Prompt, this is done by Clicking on Start > Run > type CMD >             click OK

• Type D:\sources\adprep\adprep /forestprep (Where D: is the drive of your Windows 2008 DVD)

Click Enter.

Read the warning message, I don't have any Windows 2000 Active Directory Domain                  Controllers, so I can simply skip this by typing Cand then press Enter, else quite the                Forest Preparation step and upgrade Windows 2000 Active Directory Domain Controller(s)          to SP4, then run forestperp again.

• After Forest preparation is completed successfully, run the Domain preparation command

Inside CMD, type D:\sources\adprep\adprep /domainprep (Where D: is the drive of               your Windows 2008 DVD)

If you have not Raised the Domain Functional Level from Windows 2000 Mixed to                       Windows 2000 Native or Windows 2003 as was illustrated earlier in step # 1, then you               will receive the following error message after you run domainprep command:

• If you did raise the domain functional level, adprep will successfully update the domain-wide information

• Although adprep /domainprep will update the domain-wide information, you can still run the last command adprep /domainprep /gpprep

Inside CMD, type D:\sources\adprep\adprep /domainprep /gpprep (Where D: is the            drive of your Windows 2008 DVD)

As you can see, Domain-wide information has already been updated when we ran the domainprep command, as no Group Policy Object (GPO) updates needed, or GPO information has already been updated.

3. Setting Up an Additional Domain Controller with Windows Server 2008

Now that Windows Server 2003 Active Directory has been prepared for Windows Server 2008 Domain Controllers, its time to Set Up an Additional Domain Controller With Windows server 2008 and set it as a Global Catalog. If you already have an additional Windows Server 2008 domain controller and you want to check if it is a Global Catalog

Steps to install ADC windows 2008 = http://www.getcomputersolution.com/solution/setting-up-a-additional-domain-controller-in-windows-server-2008

Steps to install Global Catalog server = http://www.getcomputersolution.com/solution/steps-to-configure-a-windows-server-2008-domain-controller-as-a-global-catalog

4. Transfer FSMO roles to the Windows Server 2008 Domain Controller

The last step in migrating a domain controller, is transferring the FSMO roles to the new domain controller.

Steps to transfer FSMO Roles = http://www.getcomputersolution.com/solution/step-to-transfer-fsmo-roles-in-windows-server-2008

Now you will successfully be able to migrate your old Windows Server 2003 Domain                   controller to Windows Server 2008.