Definition of Web Proxy
Defined as: A computer network service which allows clients to make indirect network connections to other network services. A client connects to the proxy server, then requests a connection, file, or other resource available on a different server. The proxy provides the resource, possibly by connecting to the specified server, or by serving it from a cache.
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Web Proxy
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A Reverse Proxy Is A Proxy By Any Other Name
This paper will cover the concept of a Reverse Proxy by defining what it is and how it differs from a forward proxy. We will cover the benefits and drawbacks of using this technology as a part of our network infrastructure, along with the security advantages and possible risks. This paper will follow the flow of an HTTP request through the firewall, to the Reverse Proxy, to our backend HTTP servers and then back to the requestor. We will also discuss two different Reverse Proxy infrastructure designs and the pros and cons of each of design. And finally we will cover setting up a working Reverse Proxy using the Apache, showing how the concepts of a Reverse Proxy are implemented.
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Security considerations with Squid proxy server
This paper will cover various security aspects and recommendations to improve Squid's overall security during its installation time. Software configuration parameters and an overview of logging and content filtering software will also be approached.
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Anonymizing with Squid Proxy
This article has offered a brief overview of how users can configure a simple but secure Web anonymizer using only commonly-used free software. Now Web surfing should be safe from the prying eyes on the local LAN. Readers should be reminded that the use of such set-ups may be prohibited in their workplace. Please, use the proposed setup responsibly without violating your company's ethical guidelines or security policy.
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Identify Intrusions with Microsoft Proxy Server, Web Proxy Service and WinSock Proxy Service Log Files
This is a guide on how to identify intrusions using Microsoft's Proxy Server log files. MS Proxy Server is an extensible firewall that provides passive defense against intrusions and functions as a gateway between an internal network and the Internet. This configuration allows clients to share a common connection point to the Internet.
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Case Study: Windows 2000 ISA Proxy Server Authentication Inside a DMZ
This paper describes the investigation process and implementation of IPSec policies to manage a wide range of communication traffic between two Windows 2000 servers. The use of IPSec allowed us to configure an ISA Proxy server to authenticate user login information back to an internal DC through a high security firewall. Extra configuration involving name resolution and security lockdowns completed our solution for a secure and functional proxy implementation. One of the most difficult aspects of firewall design is balancing security with functionality.
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HTTP Tunnels Though Proxies
This paper discusses the security ramifications of web proxies, including attack methods, authentication, and hardening. Hyper Text Transport Protocol or HTTP is the protocol used for web traffic. Its specification allows the use of proxies.
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Installing and Securing Squid
Squid is a high-performance proxy caching server for web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid supports SSL, extensive access controls, and full request logging. By using the lightweight Internet Cache Protocol, Squid caches can be arranged in a hierarchy or mesh for additional bandwidth savings.
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Circumventing Access Control Lists by Transparent Proxy: A Case Study
Open proxy servers are a well-known security problem that threatens the security of the Internet by making it possible for unscrupulous people to mask their identity while performing any number of malicious acts. Reading about the open proxy problem, one would come to believe that a serious configuration error such as lack of access controls is necessary for a proxy to be abused.
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Using ISA Server Logs to Interpret Network Traffic
This paper provides an outline of Microsofts Internet Security and Acceleration Server (ISA Server). Firewalls are necessary for a defense-in-depth strategy, Microsoft entered the firewall market with Internet Security and Acceleration Server (ISA Server). ISA Server was a follow-on release of Microsoft Proxy Server and part of the .Net Family.
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Personal Proxy - Online Privacy Protection for Home Users
Although online security has drawn increasing attention, online privacy issues have not been well addressed and communicated, especially for home users. Personal information collection is a common business practice for most web sites and this information can be collected without users' knowledge. There are few resources to educate home users effectively on how online privacy can be invaded and what they can do to protect against it. This paper describes certain online information collection methods and related privacy issues and introduces several personal proxy tools, particularly WebWasher in detail, to secure home users' online privacy. It concludes that better and comprehensive home computer security can be achieved when three types of critical security products: personal proxy, personal firewall and anti-virus, all work together.
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