P09

C222: Internet Server Technologies

Team Four

Chan | Javier

IP IssuesDHCPLap ExperienceTestingConflict ManagementSecurity IssueSolutionReferences

Key IssueNumber of potential clients4 Servers80 PCs200 Laptops

IP Addresses available 200.77.2.2 to 200.77.2.254 IP addresses

Number of Clients GREATER THAN

IP Addresses available

DHCP servers Centrally manage IP addresses and

provide it to clients automatically.

Key Advantage

We can configure client network settings at a server instead of configuring them on each client computer.

Remember the high turnover rate!

Step OneAdding Server Role

Step Two

Selecting Server Role: DHCP Server

Step ThreeDisplays a summary of what will be done when setting as a

DHCP Server

1. Install DHCP Server

2. Run New Scope Wizard

Step FourNew Scope

Wizard

Collects the consecutive range of possible addresses that the DHCP server can lease to clients.

If we cancel the New Scope Wizard, the DHCP server role will still be installed but the server will not be able to assign the IP addresses

Step Five Adding a Scope name for

identification

Adding a description for the

scope

Step Six Assigning a range of consecutive IP

addresses that the scope distributes

Specifying the subnet mask

Step SevenAdding addresses

or range of address that we do not want

the server to distribute

One address

Range of addresses

Step EightLease duration

specifies how long client can use an IP address from this

scope

The duration should be typically equal to the average time the computer is connected to the network.

PC LongerLaptops Shorter

Applicable to today’s problem?

Step Nine New Scope Wizard Completed

Step Ten

Authorize DHCP Server

Activate Scope

Client connected to domain with ‘Obtain

an IP address automatically’

selected.

DHCP Server Stats249

Testing exclusionsSet a new range of addresses to

be excluded

New IP address 200.77.2.6

Exclusion range(200.77.2.2 to

200.77.2.5)

245

the amount of time that the DHCP server grants to the DHCP client permission to use a particular IP address.

A typical server allows its administrator to set the lease time.

Connection Status Support Tab Details

Enable Address Conflict DetectionThe number you type determines how many times the DHCP server tests an IP address before leasing it to a client.

Value between Zero to Six

DHCP console tree Select the DHCP Server Action Properties Advanced Tab

DHCP is an unauthenticated protocol Anyone connected to the network can

obtain a lease. Not required to provide credentials!

Recommendation

Ensure unauthorized persons do not have physical or wireless access to the network

DHCP Server

Servers Manually assigned IP(Static IP as they might need to provide services and access for the clients)

PCS Manually assigned IP or longer lease period(Likely to be permanently connected to the physical network)

Laptops Dynamic IP address with short lease period(Since Stock Traders might not need to be permanently connected to the network. Hence, releasing whenever the IP is not in use and assigning to new Stock Traders will help in recycling the usage of the limited IP addresses)

Not forgetting..

Conflict Management & Security Issues

ReservationsFor static IPs

Ensures that a DHCP client is always

assigned the same IP address.

http://www.windowsdevcenter.com/pub/a/windows/2004/04/13/DHCP_Server.html

http://www.tcpipguide.com/free/t_DHCPServerConflictDetection.htm

http://technet2.microsoft.com/windowsserver/en/library/4950c160-33e0-4c7a-a0c8-ece07458699b1033.mspx?mfr=true

http://www.microsoft.com/windowsserver2003/technologies/dhcp/default.mspx

http://www.windowsitpro.com/Articles/ArticleID/13467/13467.html?Ad=1

http://www.dhcp-handbook.com/dhcp_faq.html http://technet2.microsoft.com/windowsserver/en/

library/dd966939-921b-4ce4-9dca-b33e533a58381033.mspx?mfr=true

That’s all!

Thank you!