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Polycom CMA System Operations Guide
34 Polycom, Inc.
To restore a system from a backup archive
1 Restore the system to its factory default configuration. You will need
the Restore to Factory Default DVD that shipped with the CMA system
server. This DVD has the base image of the CMA system server software.
2 Perform First Time Setup. For more information about First Time Setup,
see the Polycom CMA System Getting Started Guide for this release.
3 Restore the system configuration using the last archived configuration.
The archived configuration will overwrite the configuration that resulted
from First Time Setup. The only CMA system configuration settings not
included in the archive and thus not overwritten are the network settings
and the security certificates required for an operational system.
In cases when the CMA system is functional, but the configuration or database
is corrupted, the backup archive can also be used to return a CMA system back
to its last known good archive. As long as the network settings and security
certificates are operational, the last known good archive will return the CMA
system to its former functional state.
Network Intrusion Detection in Maximum Security Mode
The CMA system detects network intrusions by processing the Microsoft
Windows Firewall logs, inserting dropped packet information into a
temporary system database table, and identifying certain patterns in the data.
The CMA system detects the following types of instrusions: a fast port scan, a
slow port scan, a denial of service (DoS) attack, and a flood attack. These are
currently defined as:
• Fast port scan:
10 connections in a 5-second time period from the same source IP.
• Slow port scan:
100 connections in a 1-hour time period from the same source IP.
• DoS attack:
100 connections in a 5-second time period to the same destination port.
• Flood attack:
100 connections in a 5-minute window to any destination port from any
source IP.
WARNING
• This is a last resort, so never do this without being instructed to do so by PGS
support.
• This process will wipe out your system database and all other system data.
• The Restore to Factory Default DVD is specific to the CMA system server type
and version.