Unable to connect to internet via the proxy - Proxy set up OEM 12c

Question

Windows server 2008 64 bit
OEM 12.1
I have to get agent software for Windows server 2003, and as far as I know the only way is through self update in OEM, is this the only way?
But when I input my Oracle support credentials I get an error :
Unable to complete network operation against My Oracle Support. Please check network connectivity to Oracle Support Site.
Proxy settings in EOM are set for https, but not sure about the realm, I input our damain address "company.corp"
test successful :
https://updates.oracle.com was tested successfully using the Proxy.
Go to set oracle support credentials error :
Unable to complete network operation against My Oracle Support. Please check network connectivity to Oracle Support Site.
In the emoms.log file :
2012-07-22 18:28:50,753 [EMUI_18_28_49_/console/admin/rep/proxy/server] ERROR core.patch logp.251 - [EM-01942] Unable to connect to internet via the proxy. Http Proxy - company:80. Destination URL - https://server:proxy/emd/main/. Protocol - https. Error Message - Cannot establish proxy connection: 502 Proxy Error ( The specified Secure Sockets Layer (SSL) port is not allowed. Forefront TMG is not configured to allow SSL requests from this port. Most Web browsers use port 443 for SSL requests.  ).
java.io.IOException: Cannot establish proxy connection: 502 Proxy Error ( The specified Secure Sockets Layer (SSL) port is not allowed. Forefront TMG is not configured to allow SSL requests from this port. Most Web browsers use port 443 for SSL requests.  )

Answer 1

Please check the following section in
http://docs.oracle.com/cd/E24628_01/install.121/e24089/firewalls.htm#EMADV626
Enabling Oracle Management Service to Access My Oracle Support
Unless online access to the Internet is strictly forbidden in your environment, Oracle Management Service should be enabled to access My Oracle Support. This access is necessary to enable updates and patches to be downloaded, for example.
At minimum, the following URLs should be made available through the firewall:
aru-akam.oracle.com
ccr.oracle.com
login.oracle.com
support.oracle.com
updates.oracle.com
About the dontProxyfor Property
When you configure the Oracle Management Service or a Management Agent to use a proxy server, it is important to understand the purpose of the dontProxyFor property, which identifies specific URL domains for which the proxy will not be used.
For example, suppose the following were true:
You have installed the Oracle Management Service and several Management Agents on hosts that are inside the company firewall. These hosts are in the internal .example.com and .example.us.com domains.
You have installed several additional Management Agents on hosts that are outside the firewall. These hosts are installed in the .example.uk domain.
You have configured Enterprise Manager to automatically check for critical software patches on My Oracle Support.
In this scenario, you want the Oracle Management Service to connect directly to the Management Agents inside the firewall without using the proxy server. On the other hand, you want the Oracle Management Service to use the proxy server to contact the Management Agents outside the firewall, as well as the My Oracle Support site, which resides at the following URL:
http://support.oracle.com
The following properties will prevent the Oracle Management Service from using the proxy server for connections to the Management Agents inside the firewall. Connections to My Oracle Support and to Management Agents outside the firewall will be routed through the proxy server:
proxyHost=proxy42.example.com
proxyHost=80
dontProxyFor=.example.com, .example.us.com
PS: Cygwin has nothing to do with My Oracle Support connection. Cygwin is ONLY required for agent deployment using agent push from OMS.