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While this is true and worth reminding the ops about, it still sucks because many people don't understand the issues they cause by turning WAF on. CloudFlare sh

While this is true and worth reminding the ops about, it still sucks because many people don't understand the issues they cause by turning WAF on. CloudFlare should have a big "I understand I'll block many legit clients when I enable this" checkbox. Or you know... fix it in general. Or at least have a "report this block as invalid" link on the page.

Jamie9912 3y ago
Agreed, I believe the default Firewall security level is "Medium" and I think that's far too strict. First thing I do when adding a new zone is to set it to "Essentially off"
- Aachen 3y ago
  First thing I do is not use cloudflare when I don't need big brother anyway
  - fragmede 3y ago
    Which is easy enough to say, but how do you protect your site from being ddosed?
    - Aachen 3y ago
      None of my sites have been in over a decade of hosting from a residential connection When it's needed, it's needed, but it amazes me how many people feel they need big brother protection for their personal blog and nextcloud
      - deleted 3y ago
        [deleted]
      - fragmede 3y ago
        how many people do you piss off with the opinions you post on your blog? enough to warrant being DDoS'd by an emotionally stunted highschooler with their parents/stolen credit card and the ability to Google for a botnet?
        Aachen 3y ago
        Almost nobody who uses big brother as an individual ever does. What would anyone care about a nextcloud login panel? Or a reasonably civil personal blog? And yet they enable cloudflare for yet another small corner of the internet :(
aeyes 3y ago
Cloudflare WAF doesn't block clients in general, it blocks based on the data the client sends to the server. Unless your client sends a string which matches one of the WAF patterns the site will work fine. It only blocks individual requests. Now the problem here is that you probably shouldn't enable the WAF without having it in log only mode for a while if you are operating a site which let's users submit arbitrary text input. Of course it's going to match... You'll have to adjust the configuration.
- bombcar 3y ago
  I’ve yet to see a WAF that wasn’t eventually accidentally triggered by some zip file. I’ve had to recompress zip files with a higher compression setting to get around whatever string was triggering it.

Jamie9912 3y ago

Agreed, I believe the default Firewall security level is "Medium" and I think that's far too strict. First thing I do when adding a new zone is to set it to "Essentially off"

Aachen 3y ago
First thing I do is not use cloudflare when I don't need big brother anyway
- fragmede 3y ago
  Which is easy enough to say, but how do you protect your site from being ddosed?
  - Aachen 3y ago
    None of my sites have been in over a decade of hosting from a residential connection When it's needed, it's needed, but it amazes me how many people feel they need big brother protection for their personal blog and nextcloud
    - deleted 3y ago
      [deleted]
    - fragmede 3y ago
      how many people do you piss off with the opinions you post on your blog? enough to warrant being DDoS'd by an emotionally stunted highschooler with their parents/stolen credit card and the ability to Google for a botnet?
      - Aachen 3y ago
        Almost nobody who uses big brother as an individual ever does. What would anyone care about a nextcloud login panel? Or a reasonably civil personal blog? And yet they enable cloudflare for yet another small corner of the internet :(

aeyes 3y ago

Cloudflare WAF doesn't block clients in general, it blocks based on the data the client sends to the server. Unless your client sends a string which matches one of the WAF patterns the site will work fine. It only blocks individual requests. Now the problem here is that you probably shouldn't enable the WAF without having it in log only mode for a while if you are operating a site which let's users submit arbitrary text input. Of course it's going to match... You'll have to adjust the configuration.

bombcar 3y ago
I’ve yet to see a WAF that wasn’t eventually accidentally triggered by some zip file. I’ve had to recompress zip files with a higher compression setting to get around whatever string was triggering it.