blocking all ports

i ran a security scan and i am totally secure on ALL tests except one thing
the  ICMP test it was able to determine my OS type and browser type.

is there any way to block this so someone cant tell what OS i am running ?
j2023Asked:
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TannerManCommented:
Disallow ICMP requests. You only need that open for diagnostic purposes. Only allow ICMP when you MUST test the connectivity.
Hope it helps
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j2023Author Commented:
how do i disallow ICMp ?
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TannerManCommented:
I assume your running a firewall that your using to block all the other open ports. You would need block ICMP as well.
If your not using a firewall then please give some more info like what OS your running etc.
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j2023Author Commented:
i dont use my firewall to block the ports i do have a router though.

windows xp home
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