Re: Blocking scanning from outside

From: Joe Matusiewicz (joemat_private)
Date: Wed Jan 19 2000 - 06:29:36 PST

  • Next message: ozgurdat_private: "RE: Blocking scanning from outside"

    If you're trying to ping the internal addresses and you have the default 
    policy of "Accept ICMP", then the rules are allowing ICMP through the firewall.
    
    
    -- Joe
    
    At 07:15 AM 1/18/00 -0800, James Wilson wrote:
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    >We have a FW-1 box set up at the perimeter with a rule that blocks any
    >any from outside, but when I run a scan using WinSockPingProPack it
    >appears to see individual addresses behind the firewall.  It does not
    >see any information on them such as ports open etc. but it does list
    >the IP as there.  Is there a special rule needed to make those
    >invisible, or is private addressing the only way to block this (since
    >they don't route from outside)?
    >
    >- -
    >James D. Wilson, CCDA, MCP
    >"non sunt multiplicanda entia praeter necessitatem"
    >William of Ockham (1285-1347/49)
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