IAM Access Website Slow When Using Proxy – DNS Issue.

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Issue Description

IAM deploy as Single arm, Lan user use IAM as proxy server, proxy configuration is using pac script, user found it is slow when open website.

Handling Process

1. Configure proxy server with IP and port number, open web page normal, this means the IAM’s proxy server doesn’t has any issue.
2. If configure with “use automatic configuration script” as shown as below. it will shows when access to website.

3. Checked PAC script doesn;t has any issue, configure in testing environment will not has problem and PAC script doesn’t has any issues.
4. During the packet captured, found out the website access slow is because of slow between PC and proxy server, of unable to open the website will not use IAM as proxy.
Before access to the web proxy, it will use local DNS to resolve, after resolved successful, it will go through IAM’s proxy server.

Root Cause

Before use PAC script, it will use local DNS server to resolve, if unable to open or access slow is because of local dns no reply the request packet or the reply is slow.
If reply request dns packet is normal will open the website normally.

Solution

Ensure the PC able to communicate with DNS server.
Faisal Posted 12 Aug 2020 09:32
  
Thank you very much for the information ...
Faisal Posted 01 Nov 2020 16:23
  
Nice article ...
Faisal Posted 08 Dec 2020 07:26
  
Great Info
Faisal Posted 08 Mar 2021 07:06
  
Very informative …
Faisal Posted 26 May 2021 08:50
  
Nice guidance ...

I want to write a case
Doc ID: 2662
Author: Siva
Updated: 2019-12-24 14:04
Version: