WSM User Guide - WatchGuard Technologies

Configuring Intrusion PreventionConfiguring Intrusion Prevention for FTP, SMTP, or DNS1 Select the Enable Intrusion Prevention check box.2 For each severity level, select one of the following actions.AllowAllow the attachment.DenyDeny the attachment and send a deny message to the sender.DropDrop the attachment to stop the message and drop the connection. No information is sent tothe source of the message.BlockBlock a message to drop the attachment, and to add the IP address of the sender to the BlockedSites list.NoteIf you set the configuration to allow attachments, your configuration is less secure.User Guide 319