Abstract: A method, system and a computer program product for managing requests for Uniform Resource Locators (URLs) in a firewall is provided. The firewall scans for requests for URLs and extracts the URLs from the requests. The firewall then checks for the URLs in an exclusive domains list. If the exclusive domains list allows the requested URLs, the firewall allows the URLs. In case the exclusive domains list disallows the requested URLs, the firewall blocks the requests for the URLs.

Abstract: The present invention provides a technique for securely implementing port-based authentication on a shared media port in an intermediate node, such as a router. To that end, the invention provides enhanced port-based network access control that includes client-based control at the shared media port. Unlike previous implementations, the port does not permit multiple client nodes to access a trusted subnetwork as soon as a user at any one of those nodes is authenticated by the subnetwork. Instead, port-based authentication is performed for every client node that attempts to access the trusted subnetwork through the shared media port. As such, access to the trusted subnetwork is not compromised by unauthenticated client nodes that “piggy-back” over the shared media port after a user at another client node has been authenticated by the trusted subnetwork.