Requirements for an internet connectivity solution 1
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This document outlines the key requirements for an internet connectivity solution, including: 1. Providing scalable and fault tolerant access that can accommodate current and future user levels without failing due to single component issues. 2. Implementing appropriate filtering like packet, circuit-level, application-level, and protocol filtering for network security. 3. Estimating bandwidth needs based on number of concurrent users, applications used, activities performed, and time of use to determine the appropriate WAN connection and ISP account. 4. Controlling bandwidth allocation to different network traffic types using priority rules. 5. Authenticating users before allowing access and supporting different authentication methods for incoming vs outgoing requests. 6.
Requirements for an internet connectivity solution 1
- 1. Requirements for an internet connectivity solution
- 2. Intro. • Virtually every organization that runs a data network wants to provide its users with some type of access to the Internet. E-mail and Web sites have become essential business tools in recent years, and supplying these tools has become a standard requirement of IT professionals. The questions of how you will provide the network with Internet access, how much Internet access you will provide, and how you will secure your private network against unauthorized access from the Internet are essential parts of a network designer's infrastructure plan.
- 3. Scalability and fault tolerance requirements • The term fault tolerant is generally used to describe technology that offers a higher level of resilience and instantaneous recovery. This is accomplished by using hardware redundancy in addition to specialized software. 1. accommodates the number fo people who will immediately use the system. 2. accommodates the number of people who might be using it in 1,5 or 10 years. 3. Does not fail as a result of any single component failing . 4.provides recovery from multiple failures. Note : server arrays and load balancing are two ways to provide fault tolerance.
- 4. Filtering requirements • Filtering enables you to control the flow of data you need to decide the type of filtering that you require for additional network security . There are several types of filtering that you should consider: 1. Packet filtering :- when this type of filtering is enabled , all packets on the external interface are dropped except for those packets that you explicitly allow. Packet filtering can be either Static or Dynamic with dynamic packet filtering ports open only as required for communications and close when communication is complete. 2. Circuit - level filtering :- circuit- level enables support for virtually all standard and custom internet applications designed for use with the with the windows O.S . This accomplished by using inspecting session rather then connections or packets.
- 5. 4. Application – level filtering : this type of filtering provides application-specific processing , including inspecting ,screening or blocking ,redirecting ,or even modifying the data as it passes through the firewall. 5. Protocol filtering :- this type of filtering prevents specified protocol traffic from being forwarded out of switch ports.
- 6. How Much Bandwidth? • One basic question a network designer must ask when devising an Internet access strategy is how much bandwidth the users will need to perform their jobs. The answer dictates what type of WAN connection the network will need, what kind of ISP account is required, and how high the monthly fees will be. To answer this question, you must estimate how many users will require Internet access at one time, what applications they will use, what activities they will perform, and when.
- 7. Bandwidth control requirements • You need to determine the relative amounts of bandwidth to allocate to different types of network traffic. To do this, you set bandwidth priorities in bandwidth rules that determine the connection that takes priority over the others.
- 8. How Many Users? • Calculating the number of users is not as easy as it might first appear. Of course, you can find out how many employees there are in the organization and how many of them use computers connected to the network. However, you must also determine how many users are working at any one time and how much of that time they spend accessing the Internet. • You might find out that a maximum of 250 users work on the network at one time, but then you have to determine how much time they spend actually accessing the Internet
- 9. User access requirements • Your enterprise security needs might require sophisticated access control. You can control user access based on user name ,group ,ip address, destination, schedule,or content type .
- 10. Authentication requirements • You will need to consider whether your solution supports strong user authentication. The solution should be able to: 1. authenticate users before they use any resources. 2. support authentication methods. 3. configure different authentication methods for incoming and outgoing requests.
- 11. Extensibility and flexibility requirements • An important consideration for any solutions is its ability to provide you with customization tools and functionality . This is typically achieved through use of a software development kit (SDK) that is available for in-house development. You also want to determine if the solution provides a large selection of third party add on solutions and an extensible administration option. You might want to consider some of the following extensibility administration option . You might want to consider some of the following extensibility features: • • • • • • Virus scanning Management tools Content filtering Site blocking Real-time monitoring Reporting
- 12. Thank you
- 13. HCL Noida Name - Dinesh Kumar Sap code - 4001201076 Presantation topic – Requirements for an internet connectivity solution Batch – HCNE-03 Trainer – Mr. Amit saxena