... data portion (for example, the HTTP data) containsinstructions for how long the data is valid or instructions not to cache theresult at all. The information is probably encrypted for a good reason ... that case, network traffic for all ports on 23. 1.4.12are forwarded to 10.1.65.7. Note that normal packet filters are still used todetermine which ports are actually forwarded to the internal ... IP address to be used for Internet connections. Anexample of such an application is an Internet game that may require differentIP addresses for different game players. Or for logging purposes,...