tailieunhanh - Fundamentals of Network Security Graphic Symbols

Our contribution in this area is the creation of lightweight techniques for securing existing sensor network routing and data movement approaches, such as directed diffusion [5], spin [8] and data dissemination [9, 2]. We assume the computational capability and memory requirements typical of those provided by current generation of sensors. We note that in this work we make no attempt to counter the threat from a widespread denial of service attack against the RF layer. As pointed out in [12], such attacks are fairly straightforward to mount against fixed frequency RF communication links that are found in the sensors. Defending against them requires changes to. | Cisco Systems I Fundamentals of Network Security Graphic Symbols Overview Router Figure 1 IOS Router icon and photos A Router is an internetworking device which operates at OSI Layer 3. A Router interconnects network segments or entire networks and passes data packets between networks based on Layer 3 information. The router by default is an open device. Services must be turned off or secured. Routing hardware provides everything from high-end routing platforms for building IP optimized backbones to Ethernet LANs to WANs for the enterprise medium and small businesses and home offices. Cisco router models include 12000 10000 and 7000 series for enterprise and service provider 3600 2600 2500 1700 series for medium business and branch offices 70 90 and 800 series for small business and home .

• An ninh - Bảo mật
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