Comodo Help
Find the desired product help
Comodo Internet Security

Comodo Internet Security

Version 12.2

English

Print Help Download Help
Firewall Tasks - Introduction > Stealth Your Computer Ports
  • 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

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 ports 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.

        Our Products
        • Free Antivirus
        • Free Internet Security
        • Website Malware Removal
        • Free Anti-Malware
        • Anti-Spam (Free Trial)
        • Windows Antivirus
        • Antivirus for Windows 7
        • Antivirus for Windows 8
        • Antivirus for Windows 10
        • Antivirus for MAC
        • Antivirus for Linux
        • Free Endpoint Security
        • Free ModSecurity
        • Free RMM
        • Free Website Malware Scanner
        • Free Device Manager for Android
        • Free Demo
        • Network Security
        • Endpoint Protection
        • Antivirus for Android
        • Comodo Antivirus
        • Wordpress Security
        Cheap CDN
        • Bootstrap CDN
        • Semantic UI CDN
        • Jquery CDN
        • CDN Plans
        • CDN
        • Free CDN
        Enterprise
        • Patch Management Software
        • Patch Manager
        • Service Desk
        • Website Down
        • Endpoint Protection Solutions
        • Website Security Check
        • Remote Monitoring and Management
        • Website Security
        • Device Manager
        • ITSM
        • CRM
        • MSP
        • Android Device Manager
        • MDR Services
        • Managed IT Support Services
        • Free EDR
        Free SSL Certificate
        Support Partners Terms and Conditions Privacy Policy

        © Comodo Group, Inc. 2025. All rights reserved.