DHCP, DNS, Client Connection, Assignment 1 1.3 Week 3 DHCP, DNS, Client Connection, Assignment 1 1.3

Practical: Dynamic Host Configuration Protocol (DHCP) Protocol used on TCP/IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks. You will setup DHCP and configure a scope for your network. Manage > Add roles & features > DHCP Server > install Select complete DHCP configuration Check credentials > Authorize > Close window Tools > DHCP > Right click DHCP > New Scope Give it a name Configure range – See next slide

Practical: Dynamic Host Configuration Protocol (DHCP) Example scope shows 200 IP addresses in it’s scope Page after allows you to set up IP addresses that are excluded from this range or delay speed. You can also change the lease. How long the IP addresses available to the device.

Practical: Dynamic Host Configuration Protocol (DHCP) It will ask you to configure more options. Select yes. Input router IP: 111.111.111.111 Input DNS server IP: Your servers IP(May be auto entered) Next page asks about WINS. Ignore and click next, old version of DHCP configuration. Click next and activate. Finish. Scope is configured! Right click the scope you want to make changes later. Test on client by making sure client is logged into the network and IP addresses and DNS server addresses are obtained automatically. Check IP leases on server. It should show the client.

Practical: Domain Name System (DNS) DNS is a protocol for how computers exchange data on the Internet and on many private networks, known as the TCP/IP protocol suite. Its basic job is to turn a user-friendly domain name like “google.com" into an Internet Protocol (IP) address like 192.168.251.42 that computers used to identify each other on the network. DNS is installed when we installed Active Directory. So it’s ready to go. Go to Tools > DNS Right click on your server > Configure DNS Select Forward look up zone > click next Select Server Maintains the Zone Give the zone a name e.g abc-marketing.net Create a new file. Allow secure dynamic updates. This will stop rogue computers registering to your DNS. Click next. Now to configure Forwarders. Forwarders allow you to set up other DNS’s so that if your DNS can not resolve a query it can be forwarded on to another. This could be your router IP or Googles(8.8.8.8). Add one or both. Click next then finish. Try changing the Servers DNS to your Server’s IP. If set up correctly you should still have internet access. Forward look up zone = Finds IP based on Host name(eg google.com turns to 8.8.8.8) Reverse lookup zone = Finds Host name of an IP address(E.g turns 8.8.8.8 to google.com)

Practical: Configure a client Windows 10 - Joining the client to your domain System Settings > About > Join Domain > Enter Domain name(NOT servers) > Enter Admin Username and Password > Skip adding user account > Restart Issues connecting to the domain? Set clients DNS server setting to the servers IP Ping the server to check the client can find the server Logging into domain issues? Try Username - DOMAINNAME\USERNAME Log in as local user? Try Username – LOCALPCNAME\LOCALUSERNAME Want see the IP addresses on the network? Use CMD: ipconfig /all

Unit 27 – Network Operating Systems Assignment 1 - Task 1.3 Discuss and critically compare a selection NOS. These could be: Open source Proprietary General purpose Task specific Software include: Windows Server MacOS Server Apache Linux(e.g Ubuntu Server, RedHat, SUSE, CentOS, Debian, Oracle, ClearOS, Solaris, FreeBSD) Use Harvard referencing and examples whenever possible.

Open-Source (UNIX and Linux) Free Various NOS distros available Ubuntu Server, Red Hat Enterprise, CentOS, Debian, Oracle and many, many more. Accessible code open for development by anyone. Extremely wide customization range, meaning that they can perform many tasks to suit the host. Known for is its stability because processes are separate from those of the operating system. Even if an application crashes, unless it somehow manages to take down the X Windows system with it (which does happen), the operating system keeps going. With Windows or Mac however, if an application crashes it can often cause the OS to crash along with, resulting in the server going down with it. X Windows system: X provides the basic framework for a GUI environment in UNIX

Proprietary Such as Mac OS X or Windows Server. Compatible and easily integrate with Windows or Mac OS and their associated eco systems respectively. Familiar GUI’s Cost’s money. Different to open source operating systems in a sense that they may or may not be allowed to use certain software, especially if it doesn’t support a particular file format. Closed NOS’s that cannot be customized beyond the developers original intention. Users cannot modify or access Windows Servers' underlying code for example. Open-source NOSs which are free to use can be a great benefit for smaller organisations with smaller budgets.

General Purpose A general purpose NOS or setup refers to a server which can be used for a multitude of tasks all at the same time. General purpose tasks include handling users and access policies and managing files & applications. Windows Server is used widely because of a few reasons, but typically for its accessibility, maintenance costs and security. These servers are typically used to communicate with all other devices on the network and commonly used as a computing server. Distribute computing resources over a network, helping local machines to perform tasks such as domain services, distributing and running applications and storage.

Task Specific Implemented into a network for specificity. Servers that are dedicated to computing one task, and one task only. Could be multiple servers set up on a network all assigned just one task each. They don’t interact with the network the same way that a general purpose server would Generally a lot easier to implement and more cost efficient to maintain. Will not include domain services.

Unit 27 – Network Operating Systems Assignment 1 1.1 You are required to evaluate types of NOS and NOS services of a selection of Network Operating Systems such as standalone, infrastructure based and cluster based systems 1.2 Discuss the benefits of NOS security and disaster recovery. 1.3 Discuss and critically compare a selection NOS. Software could include: Windows Server MacOS Server Apache Linux(e.g Ubuntu Server, RedHat, SUSE, CentOS, Debian, Oracle, ClearOS, Solaris, FreeBSD)