Group Policy ADM template for Internet Explorer Proxy Server settings

Create file and paste the code:

;----------------------------------------------------------------------------------------------
;IE_Proxy_Settings_AllBuilds.ADM
;------------------------------------------------------------------------------------------------
CLASS USER
CATEGORY "Windows Components"
CATEGORY "Internet Explorer"

 POLICY "Enable Proxy"
 EXPLAIN !!PVHelp
 KEYNAME "Software\Microsoft\Windows\CurrentVersion\Internet Settings"
  VALUENAME "ProxyEnable"
  VALUEON NUMERIC 1
  VALUEOFF NUMERIC 0
 END POLICY

 POLICY "Proxy Server"
 EXPLAIN !!ProxyServerHelp
 KEYNAME "Software\Microsoft\Windows\CurrentVersion\Internet Settings"
  PART "Proxy Server" EDITTEXT REQUIRED
  VALUENAME "ProxyServer"
  DEFAULT "192.168.0.254:8080"
 END PART
 END POLICY

 POLICY "Proxy ByPassList"
 EXPLAIN !!ProxyByPassList
 KEYNAME "Software\Microsoft\Windows\CurrentVersion\Internet Settings"
  PART "Proxy ByPassList" EDITTEXT REQUIRED
  VALUENAME "ProxyOverride"
  DEFAULT ".domain.com"
 END PART
 END POLICY

 END CATEGORY;
 END CATEGORY;
[strings]
PVHelp="Enable or Disable the Proxy"
ProxyServerHelp="Please type in the Proxy Server Address and include any port information. Example: 192.168.0.254:8080"
ProxyByPassList="Enter addresses separated by semicolon. To bypass local address use the format ;<local> for more info go to http://technet.microsoft.com/en-us/library/dd361953.aspx"


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After loading the template using Add/Remove for Administrative Templates, you'll find under User > Admin Templates > Classic Administrative templates the three settings which can be used to define the proxy server.

Source: columbiabrain.blogspot.com