Access Denied Page Does Not Pop Out When Accessing Http Website

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Issue Description

Customer did a URL classification and rejected some http and https websites, such as www.hao123.com. When accessing this http page, no access denied page is shown.

Handling Process

1. Verify the phenomenon, the access denied page really is no shown, instead it prompt can not access this page, re-do the URL, reject www.qq.com, and still no access denied page is shown.
2. Capture the packet on the interface: DNS resolution has not passed through the device.
3,Reconfigure the customer’s DNS to 114.114.114.114, test and access to www.qq.com and it can prompt access denied page, accessing www.hao123.com also will prompt access denied page.

Root Cause

DNS problem, DNS resolution did not pass through the device.

Solution

Modify the DNS to 114.114.114.114, testing result has no any issue.
Faisal Posted 24 Aug 2020 07:48
  
Thank you very much for the information ...
Faisal Posted 20 Oct 2020 21:04
  
Nice article ...
Faisal Posted 21 Dec 2020 08:56
  
Great info ...
Ellechar Lv4Posted 21 Jan 2021 14:45
  
Very nice infoooooooooooooooooooooooooooooo
Faisal Posted 22 Mar 2021 08:01
  
Very informative …
Faisal Posted 07 Jun 2021 07:02
  
Nice guidance ...

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Doc ID: 2502
Author: Newbie1212
Updated: 2019-12-21 12:59
Version: