sudo wget -q -O /usr/share/rhn/RHN-ORG-TRUSTED-SSL-CERT \
http://swksvr_FQDN/pub/RHN-ORG-TRUSTED-SSL-CERT
sudo rhnreg_ks --sslCACert=/usr/share/rhn/RHN-ORG-TRUSTED-SSL-CERT \
--serverUrl=https://swksvr_FQDN/XMLRPC --activationkey=activation_key