Support » Everything else WordPress » Need help in stopping Mod Security issues (attacks?). Please help if you can.

  • My dedicated server went down three times in two days. We are trying to narrow down the problem, and I have this info from the web host:

    our statistics graphs show that you have a horrendous spike in memory usage that coincides with each of your downtimes. What the exact cause of this memory spike may be, we have yet to determine. However, there seems to be some evidence of many ModSecurity errors around the times of said memory usage spikes and outages.

    And then:

    As far as I can tell, the issue is certainly related to the ModSecurity issues, resulting from the following file, listed below:

    /wp-comments-post.php

    I can attempt to do some experimenting with whitelisting and see if that produces any results.

    We did not have high traffic at the time on the server.

    My first thought is that I am getting attacked either by spammers or enemies (it’s a partisan political site, with enemies).

    What would be a good defense against this?

    Would it help if I went from anyone can comment to Registered Users Only can comment? I hate to do that, but I also hate my server going down.

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