Comodo Internet Security

• Introduction To Comodo Internet Security
  • Special Features
  • Download, Installation And Activation
  • Start Comodo Internet Security
  • The Main Interface
    • The Home Screen
    • The Tasks Interface
    • The Widget
    • The System Tray Icon
  • Understand Security Alerts
• General Tasks – Introduction
  • Scan And Clean Your Computer
    • Run A Quick Scan
    • Run A Full Computer Scan
    • Run A Rating Scan
    • Run A Custom Scan
      • Scan A Folder
      • Scan A File
      • Create, Schedule And Run A Custom Scan
  • Secure Shopping Settings
  • Manage Virus Database And Program Updates
  • Get Live Support
  • Manage Blocked Items
  • Instantly Scan Files And Folders
  • Process Infected Files
• Firewall Tasks - Introduction
  • Configure Internet Access Rights For Applications
  • Manage Network Connections
  • Stop All Network Activities
  • Stealth Your Computer Ports
  • View Active Internet Connections
• Containment Tasks - Introduction
  • Run An Application In The Container
  • Reset The Container
  • Identify And Kill Unsafe Running Processes
  • View Active Process List
  • The Virtual Desktop
    • Start The Virtual Desktop
    • The Main Interface
    • Run Browsers Inside The Virtual Desktop
    • Open Files And Run Applications Inside The Virtual Desktop
    • Configure The Virtual Desktop
    • Close The Virtual Desktop
• Advanced Tasks – Introduction
  • Create A Rescue Disk
    • Download And Burn Comodo Rescue Disk
  • Remove Deeply Hidden Malware
  • Manage CIS Tasks
  • Manage Quarantined Items
  • View CIS Logs
    • Antivirus Logs
    • VirusScope Logs
    • Firewall Logs
    • HIPS Logs
    • Containment Logs
    • Website Filtering Logs
    • Device Control Logs
    • Autorun Event Logs
    • Alerts Logs
    • CIS Tasks Logs
    • File List Changes Logs
    • Vendor List Changes Logs
    • Trusted Certificate Authority Change Logs
    • Configuration Change Logs
    • Secure Shopping Activity Logs
    • Search And Filter Logs
  • Submit Files For Analysis To Comodo
• CIS Settings
  • General Settings
    • Customize User Interface
    • Configure Program And Virus Database Updates
    • Log Settings
    • Manage CIS Configurations
      • Comodo Preset Configurations
      • Personal Configurations
  • Antivirus Configurations
    • Real-time Scan Settings
    • Scan Profiles
  • Firewall Configuration
    • General Firewall Settings
    • Application Rules
    • Global Rules
    • Firewall Rule Sets
    • Network Zones
      • Network Zones
      • Blocked Zones
    • Port Sets
  • HIPS Configuration
    • HIPS Settings
    • Active HIPS Rules
    • HIPS Rule Sets
    • Protected Objects
      • Protected Files
      • Blocked Files
      • Protected Registry Keys
      • Protected COM Interfaces
      • Protected Data Files And Folders
    • HIPS Groups
      • Registry Groups
      • COM Groups
  • Containment Configuration
    • Containment Settings
    • Auto-Containment Rules
    • Containment - An Overview
    • Unknown Files - The Scanning Processes
  • File Rating Configuration
    • File Rating Settings
    • File Groups
    • Submitted Files
  • Advanced Protection Configuration
    • VirusScope Settings
    • Scan Exclusions
    • Device Control Settings
    • Script Analysis Settings
    • Miscellaneous Settings
    • Comodo Secure Shopping
  • Website Filtering Configuration
    • Website Filtering Rules
    • Website Categories
• Comodo GeekBuddy
  • Download And Install GeekBuddy
  • Overview Of Services
  • Activation Of Service
  • Launch The Client And Use The Service
  • Accept Remote Desktop Requests
  • Uninstall Comodo GeekBuddy
• TrustConnect Overview
• Dragon Browser
• Comodo Backup
• Comodo Internet Security Essentials
  • What Is Comodo Internet Security Essentials
  • What Is A Man-in-the-middle Attack
  • How Does Comodo Internet Security Essentials Protect Me From A Man-in-the-middle Attack
  • What Is The Install Location Of Comodo Internet Security Essentials
  • How Do I Update CISE
  • Understand Alerts And Configure Exceptions
  • How Do I View CISE Help
  • How Do I View The Version Number And Release Notes
  • How Do I Remove Comodo Internet Security Essentials
• Appendix 1 CIS How To... Tutorials
  • Enable / Disable AV, Firewall, Auto-Containment, VirusScope And Website Filter Easily
  • Set Up The Firewall For Maximum Security And Usability
  • Block Internet Access While Allowing Local Area Network (LAN) Access
  • Block/Allow Specific Websites To Specific Users
  • Set Up HIPS For Maximum Security And Usability
  • Create Rules To Auto-Contain Applications
  • Password Protect Your CIS Settings
  • Reset Forgotten Password (Advanced)
  • Run An Instant Antivirus Scan On Selected Items
  • Create An Antivirus Scan Schedule
  • Run Untrusted Programs In The Container
  • Run Browsers In The Container
  • Run Untrusted Programs In The Virtual Desktop
  • Run Browsers In The Virtual Desktop
  • Restore Incorrectly Blocked Items
  • Restore Incorrectly Quarantined Items
  • Submit Quarantined Items To Comodo For Analysis
  • Enable File Sharing Applications Like BitTorrent And Emule
  • Block Any Downloads Of A Specific File Type
  • Switch Between Complete CIS Suite And Individual Components (just AV Or FW)
  • Switch Off Automatic Antivirus And Software Updates
  • Suppress CIS Alerts Temporarily While Playing Games
  • Renew Or Upgrade Your License
  • Use CIS Protocol Handlers
  • Configure Secure Shopping
  • Comodo Cloud Backup
  • Give Contained Applications Write Access To Local Folders
  • Use The Comodo Uninstaller Tool
• Appendix 2 - Comodo Secure DNS Service
  • Router - Enable Comodo Secure DNS Service
  • Windows - Enable Comodo Secure DNS
• Appendix 3 - Glossary Of Terms
• Appendix 4 - CIS Versions
• About Comodo Security Solutions

Block any Downloads of a Specific File Type 

 

This page explains how to configure CIS to prohibit downloads of specific types of file.

Example scenarios:

• Some malicious websites try to push malware in .exe file format. These files, known as executables, can run commands on your computer. If the .exe is malicious then these commands could install a virus, initiate a buffer overflow attack or could contain code to turn your PC into a zombie. For this reason, you may wish to block all downloads of files with a .exe file extension.

• You may also want to block the download of audio files (.wma, .mp3, .wav, .midi), video files (.wmv, .avi, .mpeg, .swf ) or image files (.bmp. .jpg, .png) for various reasons.

You can block downloads of a specific file type in the HIPS section:

1. Click 'Settings' on the CIS home screen

2. Click 'HIPS' > 'Protected Objects'

3. Click the 'Blocked Files' tab

4. Click 'Add' > 'Applications'

5. Browse to the default download folder for your browser from the 'Open' dialog:

The default download location for most browsers is C:/Users/[username]/Downloads

6. Select any file from the folder and click 'Open'.

The file will be added to the 'Blocked Files' list.

 

7. Select the entry from the Blocked Files interface, and click 'Edit' at the top.

The 'Edit Property' dialog will appear.

8. Replace the name of the file with simply '*.file_extension', where 'file_extension' is the file type you wish to block. For example:

• Change 'C:/Users/[username]/Downloads/file-name.pdf' to 'C:/Users/[username]/Downloads*.exe' to block all files with *.exe extension

• Change 'C:/Users/[username]/Downloads/file-name.xls' to 'C:/Users/[username]/Downloads*.jpg' to block all files with *.jpg extension

9. Click 'OK' in the 'Edit Property' dialog

10. Click 'OK' in the 'Advanced Settings' interface to save your settings

This will block browser downloads of the specific file type to your 'Downloads' folder. Repeat the process if other browsers on your system have a different download folder.

Note: Blocking files in this way will only block downloads of specific file types to specific folders. If you change the folder for browser downloads then the download will be allowed.

 

Tip: To unblock future downloads, go to 'HIPS' > 'Protected Objects' > 'Blocked Files', select the file path, and choose 'Remove'. To unblock individual files, go to 'General Tasks' > 'Unblock Applications' and choose 'Unblock'