Solved: Re: WLC central web authentication and http management

Xeladona · ‎07-08-2021

Hi Guys,

i'm having strange issue with my wlc (9800-CL) and central web authentication with ISE

Everithing works fine and if i connect to mu guest (both with mobile or PC) i'm immediately redirected to the web portal (PC) and my mobile show a pop up for authenticating the network.

If i disable on the wlc the http (port 80) management i have different be behavior and i have to open the browser to be redirected to the web portal?

any idea about this?

(i would like to disable http access and still maintain autmatic redirect)

Rich R · ‎07-08-2021

Captive portal detection on all device types uses http (port 80, unencrypted) because it's impossible to use https because of certificate mismatches on redirects. On a browser you can manually bypass the invalid certificate warnings (depending on browser type/version and OS) but it would be unsafe to do that automatically in a captive portal assistant. So if you want that functionality to work then you have no choice but to leave http enabled.

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Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
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TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390

View solution in original post

Rich R · ‎07-08-2021

Captive portal detection on all device types uses http (port 80, unencrypted) because it's impossible to use https because of certificate mismatches on redirects. On a browser you can manually bypass the invalid certificate warnings (depending on browser type/version and OS) but it would be unsafe to do that automatically in a captive portal assistant. So if you want that functionality to work then you have no choice but to leave http enabled.

------------------------------
Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390