12-02-2011 07:56 AM
Any idea why the captive portal for our guest network would stop displaying? IE I join the guest network and attempt to get on the internet and I should be redirected to the sign-in portal, but that never happens. User are given an IP address on the guest network so that is not the issue.
No changes were made between today and yesterday and I can see users connected to the guest portal now. I just dont know what to check or where to look.
12-02-2011 07:58 AM
What OS are the Clients? Do you know about the OCSP and CRL issues with Macs?
Several of the major cert providers changed the addresses of their OCSP and CRL servers this week.
12-02-2011 08:12 AM
As Zach stated, most common issue recently is the OCSP one mentioned in a number of other threads like this one http://community.arubanetworks.com/t5/Command-of-the-Day/COTD-Allow-OCSP-Requests-In-Logon-Role/m-p/14624/highlight/true#M321. the issue is NOT OS specific, it will manifest itself on Firefox on Windows or Mac and Also I believe Chrome.
12-02-2011 08:33 AM
Another easy one to check is DNS resolution for the guest devices. If they can't resolve DNS then their web browser will not generate a HTTP request and hence never get redirected.
A quick way to eliminate this as an issue is to open a browser on the guest device and attempt to browse to http://126.96.36.199 or something similar and this should be enough to trigger a HTTP request.