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  1. #1
    Join Date
    Mar 2003

    Question iptables performance


    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 !

  2. #2
    Join Date
    Sep 2004
    Flint, Michigan
    Why not do a test batch of around 100 or so and see how it handles that? Then do another test of 500 or so. Then roughly 1000. Then if it's taking that no problem hit up the rest of them.
    Mike from
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  3. #3
    Join Date
    Jul 2002
    It should be fine. I don't see why it would be a problem.
    Synergy Blue LLC |
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  4. #4
    Join Date
    Mar 2003
    Updated with 10000+ rules, and cpu still 0.04

    Blocking 9000+ access within 6 hours

    *happy with linux*

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