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Endpoint Manager

Endpoint Manager

Comodo Client Security 12.10

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Firewall Tasks - Introduction > Stealth Your Computer Ports
  • Introduction To Comodo Client Security
    • Special Features
    • System Requirements
    • Install Comodo Client Security
    • Start Comodo Client Security
    • The Main Interface
      • The Home Screen
      • The Tasks Interface
      • The Widget
      • The System Tray Icon
    • Understand Security Alerts
    • Password Protection
  • 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
      • Automatically Scan Unrecognized And Quarantined Files
    • Instantly Scan Files And Folders
    • Process Infected Files
    • Manage Virus Database Updates
    • Manage Blocked Autoruns
    • Manage Quarantined Items
  • Firewall Tasks - Introduction
    • Configure Internet Access Rights For Applications
    • Stealth Your Computer Ports
    • Manage Network Connections
    • Stop All Network Activities
    • View Active Internet Connections
  • Containment Tasks - Introduction
    • Run An Application In The Container
    • Reset The Container
    • Identify And Kill Unsafe Running Processes
    • Open Shared Space
    • 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
      • Pause And Resume The Virtual Desktop
      • Close The Virtual Desktop
    • Containment Statistics Analyzer
  • DLP Tasks - Introduction
    • Run Data Loss Prevention Scans
    • Manage DLP Quarantined Files
  • Advanced Tasks - Introduction
    • Create A Rescue Disk
      • Download And Burn Comodo Rescue Disk
    • Remove Deeply Hidden Malware
    • Manage CCS Tasks
    • View CCS Logs
      • Antivirus Logs
      • VirusScope Logs
      • Firewall Logs
      • HIPS Logs
      • Containment Logs
      • Website Filtering Logs
      • Device Control Logs
      • Autorun Event Logs
      • Alert Logs
      • CCS Tasks Logs
      • File List Changes Logs
      • Vendor List Changes Logs
      • Configuration Changes Logs
      • Virtual Desktop Event Logs
      • Data Loss Prevention Event Logs
      • Search And Filter Logs
    • Submit Files For Analysis To Comodo
    • View Active Process List
  • CCS Advanced Settings
    • General Settings
      • Customize User Interface
      • Configure Virus Database Updates
      • Log Settings
      • Manage CCS Configurations
        • Comodo Preset Configurations
        • Personal Configurations
      • Manage Performance
    • Antivirus Configurations
      • Real-time Scanner Settings
      • Scan Profiles
    • Firewall Configuration
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    • Data Loss Prevention
      • DLP Monitoring Rules
      • DLP Discovery Rules
      • DLP Keyword Groups
    • Containment Settings
      • Containment Settings
      • Auto-Containment Rules
      • Virtual Desktop Settings
      • Containment - An Overview
      • Unknown Files - The Scanning Processes
    • File Rating Configuration
      • File Rating Settings
      • File Groups
      • Submitted Files
    • Advanced Protection
      • VirusScope Settings
      • Scan Exclusions
      • Device Control Settings
      • Script Analysis Settings
      • Miscellaneous Settings
    • Web Filter Settings
      • Website Filtering Rules
      • Website Categories
  • Appendix 1 - CCS How To... Tutorials
    • Enable / Disable AV, Firewall, Auto-Containment And VirusScope Easily
    • Set Up The Firewall For Maximum Security And Usability
    • Block Internet Access While Allowing Local Area Network (LAN) Access
    • Set Up HIPS For Maximum Security And Usability
    • Create Rules To Auto-Contain Applications
    • Run An Instant Antivirus Scan On Selected Items
    • Create An Antivirus Scan Schedule
    • Run Untrusted Programs Inside The Container
    • Run Browsers Inside The Container
    • Restore Incorrectly Quarantined Items
    • Submit Quarantined Items To Comodo Valkyrie For Analysis
    • Enable File Sharing Applications Like BitTorrent And Emule
    • Block Any Downloads Of A Specific File Type
    • Disable Auto-Containment On A Per-application Basis
    • Switch Off Automatic Antivirus Updates
    • Suppress CCS Alerts Temporarily
    • Control External Device Accessibility
  • Appendix 2 - Comodo Secure DNS Service
    • Router - Manually Enable Or Disable Comodo Secure DNS
    • Windows - Enable Comodo Secure DNS
  • About Comodo Security Solutions

Stealth your Computer Ports


  • Click 'Tasks' > 'Firewall Tasks' > 'Stealth Ports'
  • Port stealthing is a security feature which hides your ports to the outside world, providing no response to port scanners

    What is a port? Your computer sends and receives data through an interface called a 'port'. There are over 65,000 numbered ports on every computer - with certain ports being traditionally reserved for certain services. For example, your machine almost definitely connects to the internet using ports 80 and 443. Your email application connects to your mail server through port 25. A 'port scanning' attack consists of sending a message to each of your computer ports, one at a time. This information is used by hackers to find out which ports are open, and which ports are being used by services on your machine. With this knowledge, a hacker can determine which attacks are likely to work against your machine.


    • Stealthing a port effectively makes your computer invisible to a port scan. This differs from simply 'closing' a port as NO response is given to any connection attempt. A closed port responds with a 'closed' reply, which reveals that there is a PC in existence.
      • If a hacker or automated scanner cannot 'see' your computer then they will move on to other targets. You can still connect to the internet and transfer information as usual, but remain invisible to outside threats.

      Stealth ports on your computer

      • Click 'Tasks'> 'Firewall Tasks'
      • Click 'Stealth Ports'



      • Block incoming connections - Your computer's ports are invisible to all networks, regardless of whether you trust them or not. The average home user (using a single computer that is not part of a home LAN) will find this option the most convenient and secure. You are not alerted when the incoming connection is blocked, but the rule adds an entry to the firewall event log file. Specifically, this option adds the following rule in the 'Global Rules' interface:

      Block And Log| IP | In| From Any IP Address| To Any IP Address | Where Protocol is Any




      If you would like more information on the meaning and construction of rules, please click here.

      • Alert incoming connections - You will see a firewall alert every time there is a request for an incoming connection. The alert asks your permission on whether or not you want the connection to proceed. This can be useful for peer-to-peer and remote desktop applications which need to access your points in order to connect. Specifically, this option adds the following rules in the 'Global Rules' interface:

      Block ICMPv4 In From [Any IP Address] To [Any IP Address]  Where Message is [Message]




      If you would like more information on the meaning and construction of rules, please click here.

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