A proxy server is a hardware or a software system that acts as an intermediary between an endpoint device and another server, from which a user or client is requesting a service. The proxy server can exist on the same machine as a firewall server. It can also be on a separate server that forwards requests through the firewall. A proxy server's cache can serve all users. This is one of its key advantages. If one or more internet sites are frequently requested, these are likely to be in the proxy's cache. This improves user response time. It also helps relieve the pressure on a common shared network. Since the proxy server caches the content, it can save on the precious bandwidth consumption. A proxy server can also log its interactions, which can be helpful for troubleshooting. Let's have a look at a simple example to understand how proxy servers...
Network Security with pfSense
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Network Security with pfSense
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Overview of this book
While connected to the internet, you’re a potential target for an array of cyber threats, such as hackers, keyloggers, and Trojans that attack through unpatched security holes. A firewall works as a barrier (or ‘shield’) between your computer and cyberspace. pfSense is highly versatile firewall software. With thousands of enterprises using pfSense, it is fast becoming the world's most trusted open source network security solution.
Network Security with pfSense begins with an introduction to pfSense, where you will gain an understanding of what pfSense is, its key features, and advantages. Next, you will learn how to configure pfSense as a firewall and create and manage firewall rules. As you make your way through the chapters, you will test pfSense for failover and load balancing across multiple wide area network (WAN) connections. You will then configure pfSense with OpenVPN for secure remote connectivity and implement IPsec VPN tunnels with pfSense. In the concluding chapters, you’ll understand how to configure and integrate pfSense as a Squid proxy server.
By the end of this book, you will be able to leverage the power of pfSense to build a secure network.
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Current Title:
Network Security with pfSense
Table of Contents (7 chapters)
Preface
Free Chapter
Introduction to pfSense
pfSense as a Firewall
pfSense as a Failover and Load Balancer
Remote Connectivity with pfSense and IPsec
Using pfSense as a Squid Proxy Server
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