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Question

Can't access certain websites through wifi on any devices

Feb 24, 2016 5:42PM PST

And it doesn't seem to be a router problem.

Just got wifi installed at our new home yesterday and everything worked just fine.
Since this morning, my husband can't open his university e-mail, student home, data servers he's working with etc on his or my laptop. And we can't figure what the issue is, as the servers are up, everything opens on mobile internet just fine.
We tried
- both on Time Warner Cable's modem or on our own modem/router combinations
- Resetting each of those devices to factory settings
- Calling TWC support and having them reset everything (the websites work for them on TWC network just fine as well)
- Using GoogleDNS both is OS settings and in the router settings
- Connecting through VPN

Nothing works! Help!

Both our laptops are macbook air (Yosemite OS), so we can't easily check ethernet connection - we'd have to buy adapters - no ethernet ports!

Discussion is locked

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Answer
Is there some security app installed like Norton or other?
Feb 24, 2016 5:56PM PST

Since VPN fails it's even a bigger mystery. I have TWC so share a site.

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No security
Feb 24, 2016 6:08PM PST

No, we're both on Macs so no security software whatsoever. Just tried through megaproxy.com/freesurf/ - it loads. With my school or his work VPN through cisco any connect - doesn't.
website is sts.med.cornell.edu - just the login page really

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OK, I'm using DNS 8.8.4.4 and got this on TWC in SoCal.
Feb 24, 2016 6:16PM PST
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I didn't use a proxy so try DNS 8.8.4.4
Feb 24, 2016 6:17PM PST

And reboot after the change. I can't guess given the clues so far.

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Tried - didn't work
Feb 24, 2016 6:19PM PST

We already tried 8.8.8.8 and 8.8.4.4 and reboot after - didn't work, and yes it does load on TWC for TWC support as well that's why they think we're crazy and don't help

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I'm not TWC support but on TWC
Feb 24, 2016 6:30PM PST

Before we move to traceroutes and such (did they do that?) did you reset your browser?

I don't hold a lot of hope here since more than one Apple does this. I missed if a phone fails when on WiFi only via TWC.

Post was last edited on February 24, 2016 6:30 PM PST

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We tried in different browsers
Feb 24, 2016 6:36PM PST

We did try in Chrome and Safari as well as on our phones. Same result - works on LTE everywhere (works on laptop as well if I use LTE I share from my phone) - doesn't work on wifi anywhere

We did do ping and traceroute

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Looks to be a confirmed TWC issue.
Feb 24, 2016 6:42PM PST

I'm in SoCal so routes may differ. Wish I had more ideas. Remember I only have what details you gave. As in "nothing works." Now that you did ping and traceroute, well did those work or not? As to the browser, resets are common for Chrome so I can't tell if you did but the fact that a smart phone on wifi fails is the tell all.

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Seems to be TWC issue to us too but they couldn't figure out
Feb 24, 2016 7:45PM PST

Ping doesn't work but it's just the security of those school servers. Traceroute works, shows our ip, then several TWC (roadrunner) iterations then atlas.cogentco iterations

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OK. PING details.
Feb 25, 2016 7:06AM PST

PING has TWO phases.

1. If you tried ping sts.med.cornell.edu then the DNS must resolve and then the ping goes out.

2. If you know the IP addresss of sts.med.cornell.edu then you ping the number.

I can't tell how advanced you are but if ping by name fails but ping by number works we're back to DNS issues.

---> Did you use NSLOOKUP to check the sts.med.cornell.edu address?
(In short, run nslookup, type in sts.med.cornell.edu)

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Ping by name and IP address returns the same result
Feb 25, 2016 7:27AM PST

Exactly the same

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That's not good.
Feb 25, 2016 12:46PM PST

It does look like it's some TWC network error. We tried a lot here.