YUM server installation and configuration

Hi,

I have install and configure(using http) YUM server in my Environment. initialy is working fine.

suddenly I have notice the error during installing package using YUM.

[root@localhost ~]# yum repolist
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
http://192.168.5.1:80/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 403 Forbidden"
Trying other mirror.
http://192.168.5.1:80/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 403 Forbidden"
Trying other mirror.
repo id repo name status
RHEL6-DVD1 RedHat Linux 6 . x86_64 Base 0
repolist: 0

Guys, pls help on this issue.......