The project entails the implementation of a web firewall for the LUMS community having the features of filtering traffic on the basis of specified rules. The filtering criterion includes content as well as the source and destination addresses. Moreover, it allows monitoring of individual users through keeping record of their searches made on famous search engines. The firewall is incorporated i...

The overall efficiency, reliability, and availability of a firewall is crucial in enforcing and administrating security, especially when the network is under attack. The continuous growth of the Internet, coupled with the increasing sophistication of the attacks, is placing stringent demands on firewall performance. These challenges require new designs, architecture and algorithms to optimize f...

In this paper we discuss packet filtering firewalls and an application level gateway approach used to secure handheld devices. We propose a firewall management plane as a means for cross layer interaction. In our approach the application level gateway updates the firewall rules based on its knowledge about whether or not a certain source is sending malicious packets. Hereby we pursue a policy o...

The so-called “Great Firewall of China” operates, in part, by inspecting TCP packets for keywords that are to be blocked. If the keyword is present, TCP reset packets (viz: with the RST flag set) are sent to both endpoints of the connection, which then close. However, because the original packets are passed through the firewall unscathed, if the endpoints completely ignore the firewall’s resets...

This paper mainly studies computer network security and firewall technology, discussing the functions, main technologies, configurations, measures, design ideas of technology. With popularization networks, issues are receiving increasing attention from people. We can propose corresponding measures to address shortcomings vulnerabilities in current settings, order expect our be more secure. In t...

The evidence is strong: Protection and restoration of the intestinal firewall is of primary importance in many patients suffering from a wide range of chronic diseases. The functional medicine approach to evaluation and treatment of problems associated with compromised integrity of the intestinal firewall represents a successful application of the systems biology approach to the management of c...

Firewall is the main defence of our network and is no guarantee the present of hidden vulnerabilities. Under there is no well-defined general methodology for testing the firewalls, this is always a big headache for the administrators. Two firewall testing approaches are being compared and the correctness of the testing result is reported as well.