using the web gui, check into "Controller > Interfaces > virtual" if "DNS Host Name" is filled or not. If it is, then the guest clients will have to be able to resolve that name with 188.8.131.52 (usually with an A record in the provided DNS).
In the WLAN configuration, are you using a "Preauthentication ACL"? If so, please put 184.108.40.206 as allowed.
Have you tried with different browsers? The page at 220.127.116.11 is an https resource, with a self signed certificate that some browsers could not love so much :)
On WLC versions earlier than 18.104.22.168, you must manually enter https://22.214.171.124/login.html in order to navigate to the web authentication window.
The next step in the process is DNS resolution of the URL in the web browser. When a WLAN client connects to a WLAN configured for web authentication, the client obtains an IP address from the DHCP server. The user opens a web browser and enters a website address. The client then performs the DNS resolution to obtain the IP address of the website. Now, when the client tries to reach the website, the WLC intercepts the HTTP Get session of the client and redirects the user to the web authentication login page.
Therefore, ensure that the client is able to perform DNS resolution for the redirection to work. On Windows, choose Start > Run, enter CMD in order to open a command window, and do a “nslookup www.cisco.com"; and see if the IP address comes back.
On Macs/Linux: open a terminal window and do a “nslookup www.cisco.com"; and see if the IP address comes back.
If you believe the client is not getting DNS resolution, you can either:
Does entering this URL bring up the web page? If yes, it is most likely a DNS problem. It might also be a certificate problem. The controller, by default, uses a self-signed certificate and most web browsers warn against using them.
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...