Web Application Firewall Blocking

  • Hi,

    Having searched the forums for a similar topic I only found one but it’s not the same.

    We have our own Linux server on which we host our own WordPress sites.

    All works well, and no issues.

    We’re re-designing one site from .net to WP and I’m working on a local development machine (altering hosts file to be able to get to the website).

    The page Editor is Elementor.

    Once in a while, when trying to save something I get this error:

    Web Application Firewall
    This transfer is blocked by a Web Application Firewall.

    This transfer is blocked.
    URL https://www.ourdomain.com/wp-admin/post.php
    Event ID 40000131
    Event Type signature

    However it’s not consistent. For example, one part of the theme we bought is “team members” I’ve made 5 team members a few days ago. Today when trying to edit one of them I get the error. The other 4 – no error???

    Examining the “rogue” team member I see no different content.

    I know the “blocked by a WAF” has popped it’s head up over the years but I haven’t really been bothered by it until now.

    I’ve even gone into our WHM and looked at modsecurity. Found one rule that mentioned signatures, so I deactivated it to no avail. I even turned the entire modsecurity off but still get the error. I have no security plugins in the WP website yet.

    I wonder if any of the experts on here has any suggestions?

    Thanks

    David

    • This topic was modified 2 years, 4 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic
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  • Moderator t-p

    (@t-p)

    This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

    If you can install plugins, install and activate “Health Check”: https://www.ads-software.com/plugins/health-check/
    It will add some additional features under the menu item under Tools > Site Health.
    On its troubleshooting tab, you can Enable Troubleshooting Mode. This will disable all plugins, switch to a standard WordPress theme (if available), allow you to turn your plugins on and off and switch between themes, without affecting normal visitors to your site. This allows you to test for various compatibility issues.
    There’s a more detailed description about how to use the Health Check plugin and its Troubleshooting Mode at https://make.www.ads-software.com/support/handbook/appendix/troubleshooting-using-the-health-check/

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