Avira AntiVir Premium Help
Configuration :: WebGuard
WebGuard protects you against viruses or malware that reaches your computer from web pages that you load on your web browser from the Internet. The Scan heading can be used to set the behavior of the WebGuard component.
If this option is enabled, the web pages you request using an Internet browser are scanned for viruses and malware. WebGuard monitors the data transferred from the Internet using the HTTP protocol at ports 80, 8080, 3128. If any affected web pages are detected, the loading of the web pages is blocked. If an option is disabled, the WebGuard service remains started, but the scan for viruses and malware is disabled.
Drive-by protection allows you to make settings to block I-Frames, also known as inline frames. I-Frames are HTML elements, i.e. elements of Internet pages that delimit an area of a web page. I-Frames can be used to load and display different web content - usually other URLs - as independent documents in a subwindow of the browser. I-Frames are mostly used for banner advertising. In some cases, I-Frames are used to conceal malware. In these cases the area of the I-Frame is mostly invisible or almost invisible in the browser. The Block Suspect I-Frames option allows you to check and block the loading of I-Frames.
Block Suspect I-Frames
If this option is enabled, I-Frames on the web pages you request are scanned according to certain criteria. If there are suspect I-Frames on a requested web page, the I-Frame is blocked. An error message (HTTP status code 403) is displayed in the I-Frame window.
If this option is enabled, I-Frames with suspect content is blocked.
If this option is enabled, I-Frames with suspect content and I-Frames used in a suspicious way are blocked. The use of I-Frames is considered suspect if the I-Frame is very small and is therefore invisible or almost invisible in the browser of if the I-Frame is placed in an unusual position on the web page.