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| ZyWALL 2 Series User’s Guide |
| Table |
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LABEL | DESCRIPTION | DEFAULT VALUES |
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Generate alert when | A detected attack automatically generates a |
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attack detected | log entry. Check this box to generate an alert |
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| (as well as a log) whenever an attack is |
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| detected. See the chapter on logs for more |
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| information on logs and alerts. |
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Denial of Service Thresholds |
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One Minute Low | This is the rate of new | 80 existing |
| causes the firewall to stop deleting |
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| sessions. The ZyWALL continues to delete |
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| rate of new connection attempts drops below |
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| this number. |
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One Minute High | This is the rate of new | 100 |
| causes the firewall to start deleting | minute. The above numbers |
| sessions. When the rate of new connection | cause the ZyWALL to start |
| attempts rises above this number, the | deleting |
| ZyWALL deletes | more than 100 session |
| required to accommodate new connection | establishment attempts have |
| attempts. | been detected in the last minute, |
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| and to stop deleting |
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| sessions when fewer than 80 |
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| session establishment attempts |
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| have been detected in the last |
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| minute. |
Maximum Incomplete | This is the number of existing | 80 existing |
Low | sessions that causes the firewall to stop |
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| deleting |
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| continues to delete |
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| necessary, until the number of existing half- |
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| open sessions drops below this number. |
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Firewall Screens |