McAfee MAP-3300-SWG Product Guide - Page 176
Data processing, Download status and data trickling, Table 165, Option definitions
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Overview of Web features Web Configuration • Upload status and data trickling • Handoff host Data processing Table 165 Option definitions Option Enable client messages Help message Definition Configure client messages that are generated by the appliance and seen by users who connect to the appliance using FTP. The messages prevent FTP downloads timing out, and are available in Explicit Proxy mode, or in transparent modes when connecting through the appliance's proxy. Specifies the help message that is displayed when a client sends an FTP request for help to the appliance. The message must be in plain text and US-ASCII-compliant. Welcome message Specifies the welcome message that a user sees when connecting to the appliance using FTP. The message must be in plain text and US-ASCII-compliant. Keep alive interval Specifies how often to send the keep-alive command. Default value is 60 seconds. Keep alive command Specifies a "keep-alive" command to prevent the connection between the appliance and the onward network device from timing out when the appliance is scanning large files. The appliance repeatedly sends this command to that device. Default command is SYST. Denied commands Specifies FTP commands that the appliance does not accept. (Advanced setting.) Download status and data trickling Table 166 Option definitions Option Permit downloading For data downloads Definition You can configure the appliance to start downloading (data trickling) the file to the client before the whole file has been received from the server and scanned by the appliance. Specifies how the appliances handles FTP downloads. Default values are: Permit downloading - Yes. Scan the data - Yes. Block 8 bit data in ASCII mode - No. Block 8 bit data in ASCII mode When selected, blocks some types of transfer. FTP allows data to be passed between computers in two modes - binary and 8-bit American Standard Code for Information Interchange (ASCII). Binary is consistent across computer platforms, so its data can be scanned effectively. However, 8-bit ASCII can contain different character codes and formatting, depending on the computer systems in use, so viruses can be concealed within its data. 176 McAfee Email and Web Security Appliances 5.6.0 Product Guide