Question

Networking

1. Why is wireless transmission dangerous?
2. Why is 802.1X needed?

Answer 1

`Hey,

Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.

1)

The traditional model for authorisation is to have some form of centralised system which stores access control lists. This model is fine for use in networks which have a relatively static set of users, and so is suitable for Wi-Fi, but in other networks such as Bluetooth networks, which are much more ad-hoc in nature, this approach becomes impractical. In ad-hoc networks, not only does the dynamically changing set of users make updating access control lists infeasible in terms of cost, but there is also no guarantee that these devices would be able to access any central system. In these systems, a better approach is to form secure transient associations between devices, where the decision on who to trust is made either by each device, or by one master device which instructs the slave devices on how to behave.

2)

The purpose of 802.1x is to accept or reject users who want full access to a network using 802.1x. It is a security protocol that works with 802.11 wireless networks such as 802.11b,g,n, as well as with wired devices.

Kindly revert for any queries

Thanks.