iptables performance

Hi,

I will add about 9000 entries in my firewall using iptables:

iptables -A INPUT -s <entry> -j DROP

Yes, I want to block 9000 ip networks (long story).

Do you think my server performance will drop very much ? My server spec is Pentium 4 2.0 GHz, 512 MB RAM, Linux RedHat 9.0.

Thanks for any input !

 

 

 

 

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