ESigil Request 1.0 [User-agent] causes IP block

Discontinued Products Verification Engine - CVE
1

I run a server and we use some (primitive) DoS prevention techniques and the Comodo Verification Engine is (allegedly) causing our server to block IPs.

Some ‘evidence’:

1 | 2 | 3 | 4 | 5 | 6 | 7

(This is from our access logs.)

Even though I agree that at first it seems this is only a problem with just one user, now it seems like multiple users are having this issue (or the user experiencing this problem has a very dynamic IP, or is using different proxies/Tor).

Maybe something to look in to, in the mean time I have a question: what would happen if I blocked the user-agent ‘ESigil Request 1.0’, would our site turn up as ‘not verified’ or something?

Thanks for any replies :slight_smile:

; shought

2

Ok, I’ve done some more research and it seems this verification tool is in fact the culprit.

I wonder why it feels that it is necessary to make over 30 requests a second for different images (when the user hovers them). Ah well.

Anyhow I’ve blocked the user-agent for now :slight_smile: