Networking & Servers
- 1. NETWORKING & SERVERS By Rebecca Holden, Gavin Kennedy, Eoghan Canty & Nathan Bourke.
- 2. Servers What is a Server? • A server is a computer program. • It’s designed to process requests and deliver data. This is done through the Internet or a Local Area Network. 0 1 What is Microsoft Server? • A series of operating systems developed by Microsoft. • Supports enterprise-class management, administrative data storage, corporate networking and the ability to host an intranet. 0 2 A way to think of a server is a customer (client) sending a parcel, and then the postman (server) delivers it to someone.
- 3. • The oldest server. • Incorporated the best of early 2000s technology. • Features: LAN Support, Internet Firewalls, IIS 6.0 & Web Application Server Role. Microsoft Servers 2003 2008 2008 R2 2012 2012 R2 • From 2016 – Present Day there are more than 38,000 companies using this server. • The first version to not support Italinum-based computing. • Improved performance. • Improved cloud computing. • Successor of Windows Server 2003. • Features: Better security, firewall improvements, implantation of IPv6 and Network Access Protection. • Decreased power consumption. • Increased system speed. • New functionality for the active directory. • Has 4 editions. • Features: Server Core, Windows PowerShell, GUI, Address Managing. • Improved VM deployment, added IIS 8.5 and Office 365 support.
- 4. • Was developed alongside Windows 10. • Features: Nano-Sever, Containers, Hyper-V improvements. Microsoft Servers (cont.) 2016 2019 • Improvements: Hyper-V, Storage Spaces Direct and Containers. • Newest version of Windows Server. • Features: Encrypted Network, system Insights and Windows Defender Advanced Threat Protection.
- 5. Linux Servers Ubunt u Red Hat Enterprise Linux SUSU • Contributes to business revenues worth 5% of the global economy. • Open-source server and one of the more popular ones. • Trustworthy & Secure. • Has 8 different versions. What is a Linux Server? • An alternative version of the Linux open-source operating system. 0 3 • Low priced and has a high level of security (offering efficient firewalls, and strict file access). • Offers stability and efficiency. • Easy-to-use admin panel & user system, is also compatible with many versions of hardware. • Very secure, used by IBM and has achieved the highest level of security. • Features: Open API’s, 24/7 support and has a subscription model. • Only 869 companies use this server.
- 6. Server Recommendations 01 • Do you use Microsoft Applications? • Then a MS server is best suited. What programs does the company use? • Do you use Open-Source Applications? • Then a Linux server is best suited. • Are they mostly entry level? • Then a MS server is best suited. • Are they experienced developers? • Then a Linux server is best suited. What’s the employee’s experience? 02 • A big budget: • Then a MS server is best suited. • A small budget: • Then a Linux server is best suited. What is the company budget? 03
- 7. Pros of RedHat Enterprise Linux (RHEL) It supports shell environment. Allows you to create shell scripts for the backbend tasks. Environment variables are used to pass information in processes from the shell.
- 8. Cons of RedHat Enterprise Linux(RHEL) Desktop Graphic User Interface (GUI) is resource intensive. It does not scale well, which results in content going off screen. The network manager should be included but must be done manually.
- 9. Pros of Windows Server Once a domain is created, it is easy to add to it. Group policy is a tool and can be managed by both user and computer based. Includes a powerful DNS Server that works with the domain controller. Includes a build in DHCP (Dynamic Host Configuration Protocol) server which can be used in place of a standard network router.
- 10. Cons of Window Servers High resource management. Windows servers have poor security compared to RHEL. NOT open source There is no log file so there is no way of proving others involvement Requires more hardware investment. A faster CPU and more internal memory which is to extra functionality that they added due to customer demand.
- 11. Why we chose MS server? There are a couple of reasons why we best felt MS servers were more beneficial in this example One of the main reasons why is because the size of the company The budget of this company makes it well worth investing in these servers The security is right up there with Linux servers e.g. Windows defender and encrypted network The servers are a lot more accessible to users who are new to the company such as college graduates
- 12. PAN Personal Area Network – This is often a connection between a personal computer and a phone or other devices. This will allow sharing of information between the computer and the device. A PAN will most often use a USB to connect, as USB’s are plug and play but tend to be short in length.
- 13. LAN Local Area Network – A group of computers (more than one) in one location sharing resource. This can be a home, business building, etc. LAN connections most commonly use Cat5e, Cat6 and fibreoptic and modular connectors connected to a rack. These connections are extremely fast but have a limited distance in it’s cabling
- 14. HAN Home Area Network – A network of devices connected in a household. This can be a group of machines in a household to share information more easily A HAN is connected to a DSL modem or cable modem and the computer can be connected via Ethernet cables to a router. The speed is determined by the ISP and the type of connection but tends be plug and play
- 15. MAN Metropolitan area Network – A connection between LANs in a city or business. Examples of a MAN are the part of the telephone company network that can provide a high-speed DSL line to the customer or the cable TV network in a city. These networks used to use telephone network cable, but they cope with traffic. A type of leased fibre network for companies as part a subscriber package. MAN requires a large investment and can have topology problems. But can be essential to companies due to its over a city distance
- 16. CAN Campus area Network – A network of computers in a limited area. Larger than a LAN. a university, business or government building, These will be in a range of 5 kilometres The connection for a Campus area Network tend to be very high speed using fibre optics such as 10 gigabit Ethernet. This is to share data among different buildings nearby. These connections can be hard to manage however
- 17. SAN Storage Area Network – A network designed for connecting computers to a large storage system. Often to separate from the LAN. This allows automatic back ups of data and monitoring data The media for a Storage area Network contains SAN switches, Fibre wire connections, large storage devices and more which are particular to SAN. A SAN boasts a good bandwidth and low latency but made to only store data
- 18. SAN System Area Network – A connection of computers except it is a server to server and connects these to perform high-performance processing The connection tends to be short distance Fibre Channels and System area Network specific network cards, Switches etc. These networks are good for distributed processing applications but are made for only a specific purpose
- 19. POLAN Passive Optical Local Area Network – A LAN system, integrated into Ethernet LANs but uses fibre optical cables as the dominant media This set up for LAN are not limited in bandwidth and problems that caused by distance. It contains an Optical Line Terminal, Passive Splitter, Optical Network Terminal, but this technology is under implemented
- 20. EPN Enterprise Private Network – Creates a connection in an enterprise. It is designed to be a closed system in which access to outside networks are closed or highly secure, making it quite safe These intranets tend to use the same media as a LAN or CAN but are used to keep certain data This system has many advantages such as productivity, management easy to update etc. But doesn’t have much use outside of a business
- 21. GAN Global Area Network – A network composed of different interconnected networks which cover an unlimited area. This is usually synonymous with the internet itself A GAN uses telephone circuits, coaxial cables, fibre optics or copper wires as part of its physical structure. This allows a connection to a breadth of information and resources but has many issues such as varying speed, security issues etc.
- 22. What are WAN’s A wide area network (WAN) is a network that exists over a large-scale geographical area. A WAN connects different smaller networks. For example, they are used to connect both LANS (Local Area Network) and MANS (Metro Area Network). WAN implementation can be done either with the help of the public transmission system example EirGrid or a private network To compare a WAN to something it would have to be compared to the banking system
- 23. WAN Architecture Initially, WANs were built with meshed webs of private lines bought from telecommunications carriers, but WAN architectures have advanced With these services, a single connection to a site can be connected to many others via switching within service-provider networks For certain types of traffic, the Internet can also be woven into the mix to provide less expensive WAN connections.
- 24. WAN Management As data transmission is always dependant on the laws of physics, the greater the distance between two devices, the longer it will take for data to travel between them However, some of this can be resolved. Using WAN optimization, which makes data transmissions more efficient This is important to an enterprise because WAN links can be expensive. The introduction of these technologies has helped reduce the amount of traffic crossing WAN links and ensure that it arrives efficiently. These optimization methods include abbreviating redundant data, compressand caching.
- 25. What are LANS A local-area network (LAN) is a computer network that spans a relatively small area one LAN can be connected to other LANs over any distance via telephone lines and radio waves. The difference between a LAN and WAN is that the wide-area network spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs) and are often connected through public networks. LANs are capable of transmitting data at very fast rates, much faster than data can be transmitted over a telephone line.
- 26. LAN Architecture The types of technology used in a LAN is really dependent on the number of devices and the services provided on the network. The two basic connection types used on modern are Ethernet cables and Wi-Fi. On a typical home or small office LAN, you might find a modem that provides an internet connection a router that lets other devices share that connection and connect to one another, and a Wi-Fi access point that lets devices access the network wirelessly. On bigger LANs, you’ll typically find the same kinds of networking gear, just on a much bigger scale
- 27. LAN Management LAN management, is the management of your business’s LAN by a provider, rather than managing LAN internally. Services of a LAN management provider include: Setting up and maintaining your on-premise LAN devices Monitoring and reporting on network status Promptly notifying customers and internal users if any network problems occur Diagnosing and solving issues throughout the network
- 28. What are PAN’S A personal area network (PAN) is the interconnection of information technology devices within the range of an individual person, typically within a range of 10 meters For example, a person traveling with a laptop, a personal digital assistant (PDA), and a portable printer could interconnect them without having to plug anything in, using some form of wireless technology. The difference between PANs and other network types like local area networks, wireless local area networks, wide area networks, and metropolitan area networks is that they transmit information between devices that are nearby instead of sending that same data through a LAN or WAN before it reaches something that's already within reach.
- 29. Pro’s of PAN'S Personal Area Networks that are wireless save users from the hassle of managing wires and cables that often get tangled and take unwanted floor space. Bluetooth PAN makes it easy for users to manage their devices and equipment, allowing them to get faults fixed without any trouble. Bluetooth PAN makes it easy for users to manage their devices and equipment, allowing them to get faults fixed without any trouble.
- 30. PAN Architecture Personal area networks can be wireless or constructed with cables. USB FireWire often link together a wired PAN, while WPANs typically use Bluetooth (and are called piconets) or sometimes infrared connections. An example of a WPAN is using a Bluetooth keyboard you've connected to a tablet to control the interface for a nearby smart light bulb.
- 31. What are MAN'S Short for Metropolitan Area Network, a data network designed for a town or city. MANs are larger than local-area networks (LANs), but smaller than wide-area networks (WANs). MANs are usually characterized by very high-speed connections using fiber optical cable or other digital media.
- 32. Pro’s of MAN'S Just like a LAN or a WAN, a metropolitan area network WAN allows a large entity, like a city government or university, to pool resources to slash inefficiencies in the budget. This results in the following cost-saving benefits: 1. It reduces the number of licenses needed for various applications. Resources are shared. 2. You only need one firewall, streamlining your data security, keeping people safer. 3. It minimizes data entry and data warehousing duplications. Information can up uploaded in one place, and everyone on the network has access.
- 33. Examples of MAN'S Metropolitan area network WANs can currently be found in major cities such as: London, England. Lodz, Poland. Geneva, Switzerland.
- 34. Enterprise Private Network Enterprise Private Network serves the original purpose of private networks where data is protected, and resources are shared. Organizations build enterprise private networks to interconnect its disparate bodies With a private network, businesses have open opportunities to scale up their operations since different business departments which are located in far-flung areas often having no connection with other departments would conveniently connect.
- 35. Security in EPN'S Private and public networks interestingly are not so different from each other. The use of hardware technology and the entire infrastructure is quite similar in both areas. Web servers are needed to be checked and ensured for their protection since their exposure to the internet makes them vulnerable to cyber security breaches. Maximum security – An organization is required to take strict measures to safeguard their security. Networks are susceptible to attacks and certain company data contains sensitive information which can be risked in being lost or acquired by the wrong parties. Cost cutting measures-Keeping overheads to a minimal level is integral for a compelling ROI at the end of the day
- 36. Precautions Good password practices. Use Secure Websites. HTTP vs HTTPS. Bypass Phishing Attacks.
- 37. Precautions (Cont.) Anti-Malware Software: This is a less common practice. many anti-virus software can scan and prevent malware, but not all of them. It is vital to always keep your anti- malware software up to date as patches involved with the update could contain updates that are essential to plug known vulnerabilities. Use a Password Manager : This is good if you have many accounts as it helps you to generate complex passwords for all your account and all the user must do is remember one strong password. Regarding passwords, do not use the same password for each website and use unique accounts rather than signing into social media as if those accounts are compromised, it means all your accounts can be hacked into just by using one stolen login.