| Every enterprise requires at least one firewall to provide the backbone for its network security architecture. Firewalls are the core component of your network’s security. The risks today have greatly increased, so the call for a stronger breed of firewall has been made. In the past, simple packet-filtering firewalls allowing access to your internal resources have helped to mitigate your network’s risk.The next development was stateful inspection allowing you to monitor network sessions instead of single packets.Today’s risks are far greater and require a new generation of devices to help secure our networks’ borders from the more sophisticated attacks.
Firewalls police your network traffic. A firewall is a specialized device that allows or denies traffic based upon administratively defined policies.They contain technologies to inspect your network’s traffic.This technology is not something that is exclusive to firewalls, but firewalls are designed specifically for inspecting traffic and therefore do it better then any other type of device.Any network can have millions of packets transverse it in a short period of time. It is impossible for a human to directly interact with the network. Even if you were to use a tool to look at the traffic directly it would be impossible for you to decide which traffic is good and which is bad.The need for a specialized device to enforce traffic restrictions has grown over the years. Because security is of such high importance, a specialized device was required to ensure the security of network traffic.
SonicWALL firewall appliances have answered this call for a secure enterprise. The SonicWALL firewall product line has complete offerings from the home office to the enterprise networks. In this chapter we will review networking basics. Security requires a strong basic knowledge of networking protocols. In our first section,“ Understanding Networking,” we will look at networking from a top-down approach.This section starts with the basic ideas of networking models and then works into full networking communications.We will also discuss the components and prerequisites of IP addresses and how they are divided up to make networks. |
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Lonely Planet Cambodia (Country Travel Guide)
Lonely Planet’s 7th edition of Cambodia will take you into the heart of Southeast Asia: beautiful beaches (without the tourist tide), remote wilds, subtle cuisine and elaborate temples. From the famed Angkor Wat to the old-world charms of Siem Reap and the ‘Phnomenal’ capital city of Phnom Penh – it’s all here.... | | | | Java, Java, Java, Object-Oriented Problem Solving (3rd Edition) This second edition of Java, Java, Java offers a robust, accessible, and flexible problem-solving perspective. The use of Unified Modeling Language (UML) diagrams throughout the text, strongly emphasizes object-oriented design. This book assists students and professionals with their most challenging problem as beginning programmers:... |
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