Only the administrator's private key can unlock the header file. To support the use of Sign 'N Seal, McAfee has launched IDCentral, a free Internet-based certificate authority. To send someone an encrypted email or file attachment, senders first access IDCentral to download the recipient's public encryption key. Once downloaded, a recipient's public encryption key can be easily stored within PCCrypto's Wallet function. Once a file is encrypted, it can be transmitted to the recipient, who then opens the file using their own private key.
Back doors are open modem connections which completely bypass a network's firewall.
Back doors are vulnerable to hacker weapons such as war dialers, which are automated software programs that call random phone numbers and record instances of phone lines which are answered by modems. Once open modem lines have been identified, hackers can worm their way into a company's network. PC Firewall 2.0 protects desktop computers from war dialers and other internal and external security threats. Using PC Firewall's simple radio button configuration management console, administrators can easily apply a broad range of filtering rules to protect the desktop. Administrators can allow or disallow different kinds of incoming users or traffic based on protocol type, destination, IP address, and port configurations.