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steffen
Joined: 25 Jun 2019 Posts: 3
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Posted: Tue Jun 25, 2019 7:09 am Post subject: URL test on CDN (Cloudflare) hosted domains |
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I find that websites running behind Cloudflare are not easily setup with URL tests.
Are there any special configuration in regards to monitor websites using CDN services? |
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KS-Soft
Joined: 03 Apr 2002 Posts: 12795 Location: USA
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Posted: Tue Jun 25, 2019 7:25 am Post subject: |
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Not sure I understand the question.
I think there is no problem to setup URL test.
But you may want to setup several URL tests, e.g.
- check URL using hostname
- check URL using several IP addresses provided by Cloudflare
- check URL using real IP address of your server
This way you will be sure Cloudflare service works and your web site works fine.
Regards
Alex |
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steffen
Joined: 25 Jun 2019 Posts: 3
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Posted: Tue Jun 25, 2019 11:08 am Post subject: |
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KS-Soft wrote: | Not sure I understand the question.
I think there is no problem to setup URL test.
But you may want to setup several URL tests, e.g.
- check URL using hostname
- check URL using several IP addresses provided by Cloudflare
- check URL using real IP address of your server
This way you will be sure Cloudflare service works and your web site works fine.
Regards
Alex |
Hi Alex,
Thank you for answering and your thoughts of adding additional tests. Your answer seems to be sufficient as I just wanted to hear from you, if any special configuration was needed or known in case of using CDNs.
Digging a little more and I find some WAF events at Cloudflare as follows. After whitelisting the IP address of our monitor, the tests are now passing. I'm not sure how to pass the WAF rule, but it seem like the header needs adjustment of some sort. Do you have any clue?
Code: | {
"id": "4ec87d54099ad881",
"country": "DK",
"ip": "...",
"protocol": "HTTP/1.1",
"method": "GET",
"host": "...",
"user_agent": "Mozilla/4.0 (compatible; MSIE 6.0)",
"uri": "/",
"request_duration": 36999936,
"triggered_rule_ids": [
"100043A"
],
"action": "challenge",
"cloudflare_location": "CPH",
"occurred_at": "2019-06-25T16:59:01.12Z",
"rule_detail": [
{
"id": "",
"description": "REQUEST_HEADERS:HOST"
}
],
"rule_message": "Anomaly:Header:User-Agent",
"type": "waf",
"rule_id": "100043A",
"zone_id": "c73baeafc85f1e0995b4a2a5ec1749fb",
"cookie": ""
} |
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KS-Soft
Joined: 03 Apr 2002 Posts: 12795 Location: USA
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Posted: Tue Jun 25, 2019 1:08 pm Post subject: |
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Looks like server (WAF) does not like value set in User-Agent field.
You may change this field on Misc page in HostMonitor Options dialog (Options->Misc->Settings for URL tests).
E.g. set agent name to
Mozilla/5.0 (Windows NT 10.0; Win64; x64)
or
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:15.0) Gecko/20100101 Firefox/15.0.1
or
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36
Regards
Alex |
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steffen
Joined: 25 Jun 2019 Posts: 3
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Posted: Wed Jun 26, 2019 12:30 am Post subject: |
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Thank you very much Alex!
Changing the User Agent under the misc options made the URL test pass through Cloudflare. |
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KS-Soft
Joined: 03 Apr 2002 Posts: 12795 Location: USA
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Posted: Wed Jun 26, 2019 6:17 am Post subject: |
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You are welcome
Regards
Alex |
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