Originally Posted by dheeraj_pr10
I have tried
#sudo yum install httpd and came across this issue.
This system is not registered with RHN.
RHN support will be disabled.
why this mgs is coming even though REDHAT is open souce.
Red Hat products aren't free, if you want/need to use their products you need to register (pay for) to get access to their repositories.
Alternatives for RedHat are: CentOS, Scientific Linux or Fedora. These are free and the first 2 are identical to current RedHat.