Which of the following retains the information it's storing when the system power is turned off? Submit ».
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WatchGuard expert. Set up a webblocker exception. FrostWolf This person is a verified professional. How could I have missed that. This example configuration uses a combination of policies and services to block the strategies used by Ultrasurf:. For your reference, we have included an example configuration file with this document. The configuration file includes the settings described in this example.
To see the configuration details of each example configuration file, open the configuration file with Policy Manager. This example configuration uses a basic network topology, to show how the Firebox can filter all traffic between the clients on the trusted network and the public internet. All network clients must use the Firebox as their default gateway.
This section describes the configuration based on the chronological order of packets we expect to see from evasive applications such as Ultrasurf. The safest and most efficient option is to Drop requests. This causes the application to wait before it gives up and tries another strategy, and it also saves firewall resources. If you decide to Block , be aware that while this can be a very effective method to block any traffic that originates from the client when they use a Public DNS server, it can also block all Internet access from that client.
In a network with an internal domain server, the Block action in the DNS proxy can block Internet access for all users on the network. This alias includes a small group of trusted public DNS servers.
You could use a packet filter policy instead of a proxy policy to define the destination of allowed DNS packets. This can save resources on the firewall. For this example, this proxy policy uses the default settings from the predefined DNS-Outgoing proxy action, with these changes:.
To prevent connections from Ultrasurf and other similar applications, this Application Control action is configured to Drop connections for all applications in the Tunneling and proxy services category. For more complete protection, this action also restricts applications in the Media streaming services , Peer-to-peer networks , Online games , and Social networks categories. Those additional categories are not required to block Ultrasurf.
Your choice of which application categories to allow depends on your company policies. To deny unknown applications, you must be explicit about what applications are allowed, so that the default Drop action can be triggered when an application does not match. To prevent Ultrasurf and other tunneling and proxy applications, select the Drop action for the Tunneling and proxy services category in the Application Control action.
Now he must make two changes to meet the needs of his organization. He must also configure the Firebox to deny Apple iTunes. Configure File Exceptions When you enable security services that scan content, the Firebox examines traffic and looks for suspicious files that contain threats such as viruses and malware.
File Exception Actions For each file exception, you can select one of these actions: Allow Allows the file to be downloaded or the email attachment to be delivered to the recipient. The File Exceptions dialog box appears. Click Add. The Add File Exception dialog box appears. In the Description text box, type a description of the file.
The description can be up to 64 characters. From the Action drop-down list, select the action you want to take for this file. The available actions are: Allow — Downloads the file or delivers it to the recipient.
Drop — Drops the file or removes it from the email message before it is delivered to the recipient. To send a log message for this file exception, select the Log check box. Click OK.
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