http://50.173.197.70/atc_cacert.crt
http://50.173.197.70/atc_cacert_chain.crt
http://50.173.197.70/atc_intermediate_cacert.crt
http://50.173.197.70/crl/ad.crl
http://50.173.197.70/crl/atc_intermediate_ca.crl
http://50.173.197.70/crl/atcorp_ca.crl
http://50.173.197.70/crl/vpn.crl