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DHCP WPAD and slow Internet Explorer page loads (SQUID Proxy)

Posted on 2014-11-19
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Last Modified: 2015-02-27
We use SQUID Proxy (Symantec's CSP) in our environment. I have configured WPAD.dat on our DHCP and it is working successfully however, it is also often causing slow Internet Explorer page loads.  
 
So, if I configure the Proxy server settings within Internet Explorer (Local Area Network (LAN) Settings), Page loads are a lot quicker.
 
Any ideas on how to improve Page load performance using configured WPAD.dat through DHCP?
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Question by:the_omnific
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7 Comments
 
LVL 62

Expert Comment

by:gheist
ID: 40454765
This is a problem with your DHCP server.
You can use WPAD over DNS instead, which in comparison is lightning fast.
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LVL 46

Expert Comment

by:Craig Beck
ID: 40454835
...if your DNS is working well 😊
0
 
LVL 1

Author Comment

by:the_omnific
ID: 40456263
Awesome! Do you have any information on how to setup / deploy WPAD in DNS?
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LVL 62

Accepted Solution

by:
gheist earned 500 total points
ID: 40456702
If your AD domain's DNS name is say example.com and some department/subsidiary uses sub.example.com, it would suffice to add host wpad.example.com and put there wpad.dat file (or another wpad.dat in subsidiary DNS domain's wpad host if you look to override)
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LVL 1

Author Comment

by:the_omnific
ID: 40461036
So just create a CNAME in DNS pointing to the server hosting the wpad file?
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LVL 1

Author Comment

by:the_omnific
ID: 40461037
No other configuration require on the client end?
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LVL 62

Expert Comment

by:gheist
ID: 40461531
Client has to have the hostname in that DNS domain (99.99% true in a windows domain)
Configuration in client;s end is same as for DHCP WPAD - "automatically get proxy settings for this network"
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