Part.1 WBEL での up2date

up2date --nox --configure で各種設定(proxy とか etc...)
up2date --nox -u でアップデート。

Your GPG keyring does not contain the Red Hat, Inc. public key.
Without it, you will be unable to verify that packages Update Agent downloads
are securely signed by Red Hat.

Your Update Agent options specify that you want to use GPG.

To install the key, run the following as root:

rpm --import /usr/share/rhn/RPM-GPG-KEY

…などと出たら、
rpm --import /usr/share/rhn/RPM-GPG-KEYrpm --import /usr/share/rhn/RPM-GPG-KEY-whitebox をやっておく。(必要なら RPM-GPG-KEY-fedoraRPM-GPG-KEY-fedora-test も import しておく)
ちなみに、参考にしたのはコレ

設定ファイルは /etc/sysconfig/rhn/sources。
ワタシは、念のため

yum WBEL-3.0 ftp://ftp.esat.net/mirrors/whiteboxlinux.org/3.0/en/os/i386
yum updates-released ftp://ftp.esat.net/mirrors/whiteboxlinux.org/3.0/en/updates/
yum WBEL-3.0 ftp://ftp.kspei.com/mirrors/whiteboxlinux.org/whitebox/3.0/en/os/i386
yum updates-released ftp://ftp.kspei.com/mirrors/whiteboxlinux.org/whitebox/3.0/en/updates/
yum WBEL-3.0 ftp://ftp.jach.hawaii.edu/pub/linux/whitebox/3.0/en/os/i386
yum updates-released ftp://ftp.jach.hawaii.edu/pub/linux/whitebox/3.0/en/updates/
yum WBEL-3.0 http://www.geekstyle.net/white_box/3.0/en/os/i386
yum updates-released http://www.geekstyle.net/white_box/3.0/en/updates/

あたりを追加してる。でも、普段は yum なので(以下略