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I need put an appliance in order to have a connection Proxy to proxy type proxy-chain(proxy instances IN and OUT) this connection will be with a bluecoat apliance, but bluecoat solution is very expense, so I am finding another appliance.
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I need put an appliance in order to have a connection Proxy to proxy type proxy-chain(proxy instances IN and OUT) this connection will be with a bluecoat apliance, but bluecoat solution is very expense, so I am finding another appliance.

Alternative for blue coats in the funtion about Proxy chain.

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

Network Security

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.