[FW-1] How to block Spoofing ??

[Mohan Sundar <mohi_v@FW1-NOSPAMHOTMAIL.COM>]

Hi All,

   I have seen many IP addreess tried to establish connection with my
network, I came to know this from my firewall log  but these  are not realy
from Original hosts. I feel sombody is spoofing the IP and attacking my
network.. hence I would like to block this spoofing,
Is anybody know how to block this spoofing? and IS there any special
software avilable to identify spoofing?
I feel the spoofing option provided by checkpoint is not effective..
Since it can block pockets which arrives to external NIC with Private
IP/LocalNet IP addresses only...
Any input regarding Spoofing is appriciated..

Thanks & regadrs,
MOHi

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