Glossary |
|
VPN | Virtual Private Networking allows local area networks to |
| communicate across wide area networks, typically over an |
| encrypted channel. See also: IPsec. |
Watchdog Timer | A watchdog timer (WDT) is a device or electronic card that |
| performs a specific operation after a certain period of time if |
| something goes wrong with an electronic system and the |
| system does not recover on its own. |
| A common problem is for a machine or operating system to |
| lock up if two parts or programs conflict, or, in an operating |
| system, if memory management trouble occurs. In some |
| cases, the system will eventually recover on its own, but this |
| may take an unknown and perhaps extended length of time. |
| A watchdog timer can be programmed to perform a warm |
| boot (restarting the system) after a certain number of seconds |
| during which a program or computer fails to respond |
| following the most recent mouse click or keyboard action. |
| The timer can also be used for other purposes, for example, to |
| actuate the refresh (or reload) button in a Web browser if a |
| Web site does not fully load after a certain length of time |
| following the entry of a Uniform Resource Locator (URL). |
154 | AlterPath Console Server User Manual |
