Hyper Text Transfer Protocol (HTTP) is a request/response protocol between clients and servers. The HTTP client is usually a web browser. The HTTP server is a remote resource that stores HTML files, images, and other content. When the HTTP client starts a request, it establishes a TCP (Transmission Control Protocol) connection on Port 80. An HTTP server listens for requests on Port 80. When it receives the request from the client, the server replies with the requested file, an error message, or some other information.
The HTTP-proxy is a high-performance content filter. It examines Web traffic to identify suspicious content that can be a virus or other type of intrusion. It can also protect your HTTP server from attacks.
With an HTTP-proxy filter, you can:
You can also use the HTTP-proxy with the WebBlocker security subscription. For more information, see About WebBlocker.
To enable your users to downloads Windows updates through the HTTP-proxy, you must change your HTTP-proxy settings. For more information, see Enable Windows Updates Through the HTTP-Proxy.
The TCP/UDP proxy is available for protocols on non-standard ports. When HTTP uses a port other than Port 80, the TCP/UDP proxy sends the traffic to the HTTP-proxy. For more information on the TCP/UDP proxy, see About the TCP-UDP-Proxy.
To add the HTTP-proxy to your XTM device configuration, see Add a Proxy Policy to Your Configuration.
If you must change the proxy definition, from the
On the Settings tab, you can set basic information about a proxy policy, such as whether it allows or denies traffic, create access rules for a policy, or configure policy-based routing, static NAT, or server load balancing. The Settings tab also shows the port and protocol for the policy, as well as an optional description of the policy. You can use the settings on this tab to set logging, notification, automatic blocking, and timeout preferences.
If Application Control is enabled on your device, you can set the action this proxy uses for Application Control.
For more information, see Enable Application Control in a Policy.
On the Traffic Management tab, you can select the Traffic Management action for the policy. You can also create a new Traffic Management action. For more information about Traffic Management actions, see Define a Traffic Management Action in v11.8.x and Lower and Add a Traffic Management Action to a Policy.
To apply a Traffic Management action in a policy:
You can choose a predefined proxy action or configure a user-defined proxy action for this proxy. For more information about how to configure proxy actions, see About Proxy Actions.
To configure the proxy action:
For the HTTP-proxy, you can configure these categories of settings for a proxy action:
On the Scheduling tab, you can specify an operating schedule for the policy. You can select an existing schedule or create a new schedule.
The Advanced tab includes settings for NAT, QoS, multi-WAN, and ICMP options.
To edit or add a comment to this proxy policy configuration, type the comment in the Comment text box.
For more information on the options for this tab, see:
About Proxy Policies and ALGs