Assuming you run the operator on an agent you can modify the JVM parameters and specify the proxy settings in the c2oagtsvcw.conf file:
wrapper.java.additional.20=-Dhttp.proxyHost=proxyhostURL
wrapper.java.additional.21=-Dhttp.proxyPort=proxyPortNumber
wrapper.java.additional.22=-Dhttp.proxyUser=someUserName
wrapper.java.additional.23=-Dhttp.proxyPassword=somePassword
Where in this example 20 is the next available number in the list of additional parameters, you should match it to yours.
Also, replace
Dhttp with
Dhttps if applicable.
I suggest you submit an
Idea to add Proxy support for the PAM SOAP Operators.