Background
YUM stands for Yellow dog Updated Modified. When you are working on linux server which is behind ISA Proxy Server that requires authentication (user & password) will fail to install a rpm package from remote repository using YUM. So without full filling ISA authentication you will not be able to install anything from remote repositories using YUM and will throw ERROR code 407 with message “The ISA Server requires authorization to fulfill the request..”
how to install package using YUM behind authenticated proxy server?
vim /etc/yum.conf