ICMP Echo Reply

Discussion in 'other firewalls' started by ComputerSaysNo, Aug 11, 2012.

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  1. ComputerSaysNo

    ComputerSaysNo Registered Member

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    Does anyone know if Online Armor protects you against ICMP echo reply pings?

    Am I right to say Echo Reply pings are one of the first tools an attacker will use to see if your box responds?
     
  2. Kyle1420

    Kyle1420 Registered Member

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    hxxp://www.inetdaemon.com/tutorials/internet/icmp/echo.shtml
    Hello, The above link will explain in detail the protocol.

    Honestly in my opinion, ping replies aren't something you should worry about at all. What IS important is that all your ports are closed.
    In layman terms...Think of is as a knock on the front door. If you "reply: Who is it?" and they respond with an unknown name "Sorry, I did not solicit this encounter, I'm not letting you in." As long as the windows and doors are locked, it doesn't matter if they know your home.


    You can test if your ports are closed by visiting GRC shields upKeep in mind, If your behind a router its likely that the test will be run against your router and not OnlineArmor.

    Hope this helps..
     
  3. Brummelchen

    Brummelchen Registered Member

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  4. itman

    itman Registered Member

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    The WIN 7 firewall firewall for example allows inbound echo reply as one of its default rules.

    The primary reason it is allowed is to prevent your previous Internet connections from "hanging" when the connection is terminated.

    If you are really worried about it security wise, only allow it inbound from your router's gateway address.
     
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