For each of the files below, make sure the proxy settings are added (and obviously change the user/pass/domain/port)
These need to be set for both the MHN server and the honey systems you intend to deploy on (assuming the honeypots are behind the firewall).
ALL_PROXY=http://user:[email protected]:8080
HTTP_PROXY=http://user:[email protected]:8080
HTTPS_PROXY=http://user:[email protected]:8080