Content, metrics, and other details captured from the monitored Web traffic are stored in a distributed Archiver database. The port through which the database is accessed is not open, and no tools that would allow access to this data are available to non-root appliance users. The only way to access the data is through controlled queries from the APM > Search dashboards.
By default, captured data is stored until an Archiver determines that it needs more space. The Archiver deletes the oldest data in the system to make room for new data. However, customers who require that data be stored for a limited time can configure the Archivers to remove data based on a maximum retention duration setting (for example, 48 hours or one week).
If customers need to decommission an appliance, they have the option to reset its database and verify that data is securely deleted before withdrawing the appliance from active service. For detailed instructions about purging the appliance database, see the Foglight™ APM Administration and Configuration Guide.
Some top-level APM dashboards require that metrics and details be sent from the Archiver database to the Foglight database repository at regular intervals. This data is encrypted before being sent. For more information, see .
For the capture subnet, data is sent in the clear from a Sniffer component to an Archiver component through a custom-built TCP protocol over the dedicated port 7623. When these components are located on separate physical appliances, isolate the capture subnet using a crossover cable or a dedicated private switch. For virtual appliances, use a separate virtual capture network to keep this traffic from being generally available to all virtual machines in the customer’s environment.
In addition to monitoring regular HTTP traffic, appliances can monitor Secure Socket Layer traffic (SSL/TLS). To enable monitoring of SSL traffic, customers upload their private SSL encryption keys to Foglight™ using the browser interface. These keys are naturally of high sensitivity to customers.
The SSL keys are stored centrally on the Management Server in an encrypted file. When a Sniffer needs keys, the keys are transmitted over a two-way authenticated and encrypted SSL connection from the Management Server to the Sniffer. The remote Sniffer never writes the keys to disk, using them from memory only. When a Sniffer restarts, it submits a new request for keys.
Foglight uses the AES-256 data encryption algorithm to encrypt the SSL connection. The encryption key is created upon installation and is unique to each customer. It consists of a combination of random data and certain data specific to the customer, making it difficult to guess or enter using brute force. Each Sniffer has its own client certificate that is used for client side authentication, therefore only Sniffers added by the Administrator are allowed to connect to the Management Server. This prevents external attempts to open an SSL connection to the Management Server to request keys. The Sniffers use the server's certificate for authentication to prevent any man-in-the-middle attacks.
Foglight can also use private keys stored in a SafeNet Hardware Security Modules (HSMs) server to decrypt secure traffic. Foglight accesses and uses SafeNet private keys in a secure manner consistent with the SafeNet HSM model. In particular:
The Foglight™ Management Server can collect usage data about your environment and send it to Quest Software Inc. to improve support response. This data helps Quest Software Inc. identify potential bottlenecks, and improve the overall Management Server performance and server versions going forward.
The collected usage data contains information about the visited dashboards. It also includes the unique ID of the Management Server and its version information. It does not identify any users or provide additional information about their actions in the user interface.
By default, this feature may be enabled. To turn it off, click Disable on the Communication dashboard. This dashboard is accessible from the navigation panel in the Foglight browser interface, under Administration > Support > Support Notifications > Automatic Communication with Quest.