>I have someone flood pinging my IPMasq PC from what I believe to be spoofed
>IP addresses. I would like to stop this. Is there any way to stop an IPMasq
>PC from  responding to pings and/or spoofed packets?

Try this before your implict IPFWADM deny/reject:


$extif is the NAME of your internet connection (PPP0, ETH0, etc)

# ICMP: Deny ICMP 
/sbin/ipfwadm -I -a deny -W $extif -P icmp -S 0.0.0.0 -D $extip


BTW.. if you have people hacking at your box, you better have some
security in place ASAP or they WILL get in.  I've worked LONG and
hard on my TrinityOS doc and its better than ever..

        NOTE:  This is a new version as of today!  I'll get around
                to updating the Changes-log WWW page later.  All 
                TrinityOS changes are documented though.

        http://www.ecst.csuchico.edu/~dranch/LINUX/TrinityOS.wri


--David
.----------------------------------------------------------------------------.
|  David A. Ranch - Remote Access/Linux/PC hardware      [EMAIL PROTECTED]  |
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