HCHTech
Well-Known Member
- Reaction score
- 4,293
- Location
- Pittsburgh, PA - USA
My google-fu is failing me, so I'd appreciate a little guidance on how to troubleshoot this probem:
I have a client that has an e-commerce site, and their initial report was that no one could access the site from their office. We have a firewall there so normally when we get complaints like this it is because the site is tripping one of the filters - Botnet, Geo-IP, RTBL, etc. I checked the logs and found them clean. So I remoted in to one of their computers, and sure enough I couldn't bring up the site, but the error in Chrome is that the site can't provide a secure connection. - no https. I try Edge, and I get "This site is blocked because it is a known security threat." - I think Edge is a little agressive with the "https doesn't work" message, haha. I check the site from my computer at my office and it comes up perfectly fine. https working. I check other websites from their computers, and https is working just fine. So https isn't working for only one website from their office, but works fine for that site from other locations.
The first thing I check is the time settings on their computers - there is no domain there, but the timezone and time are spot on. Next, I check what they are using for DNS servers, same as me: quad 9 as primary and nextdns as secondary.
Since the problem is office-wide for them, it has to be something about their network/internet, as opposed to something wrong or misconfigured with an individual computer. Since the site works from my office and another office I was able to test this from, I don't think there is anything wrong with the site itself, either.
I don't think their site is a secret, so I'll post it here in case that helps with diagnostics: redbirdgiftcompany.com
What would cause this pattern of symptoms, and where should I be focusing my troubleshooting efforts?
I have a client that has an e-commerce site, and their initial report was that no one could access the site from their office. We have a firewall there so normally when we get complaints like this it is because the site is tripping one of the filters - Botnet, Geo-IP, RTBL, etc. I checked the logs and found them clean. So I remoted in to one of their computers, and sure enough I couldn't bring up the site, but the error in Chrome is that the site can't provide a secure connection. - no https. I try Edge, and I get "This site is blocked because it is a known security threat." - I think Edge is a little agressive with the "https doesn't work" message, haha. I check the site from my computer at my office and it comes up perfectly fine. https working. I check other websites from their computers, and https is working just fine. So https isn't working for only one website from their office, but works fine for that site from other locations.
The first thing I check is the time settings on their computers - there is no domain there, but the timezone and time are spot on. Next, I check what they are using for DNS servers, same as me: quad 9 as primary and nextdns as secondary.
Since the problem is office-wide for them, it has to be something about their network/internet, as opposed to something wrong or misconfigured with an individual computer. Since the site works from my office and another office I was able to test this from, I don't think there is anything wrong with the site itself, either.
I don't think their site is a secret, so I'll post it here in case that helps with diagnostics: redbirdgiftcompany.com
What would cause this pattern of symptoms, and where should I be focusing my troubleshooting efforts?
