Firewalls work by inspecting and filtering packet traffic between two networks. Firewalls are categorized according to the layer of the Open System Interconnection (OSI) model that they inspect. Most firewalls are...
When Microsoft releases a new software version, service pack, or hotfix, the company updates the security catalogs and protected file listings to reflect the new file versions. Outside these methods, the only way to...
Two IP communication standards offer the promise of interoperability among different Instant Messaging (IM) products. In 1999, the Internet Engineering Task Force (IETF) released the Session Initiation Protocol (SIP)...
Encryption is a buzzword that Instant Messaging (IM) vendors love to include in their advertisements. However, good security isn't easy to achieve, and many poorly written encryption implementations exist. When...