APT::Get::Show-Upgraded "true"; Acquire::https { // Peer-Verify-Level "0"; // no verification // Peer-Verify-Level "1"; // verify peer certificate if present - default // Peer-Verify-Level "2"; // verify peer certificate // Peer-Verify-Level "3"; // verify peer with locally installed // Debug-Level "0"; // emergency // Debug-Level "1"; // alert // Debug-Level "2"; // critical // Debug-Level "3"; // error // Debug-Level "4"; // warning - default // Debug-Level "5"; // notice // Debug-Level "6"; // info Debug-Level "7"; // debug // Pem "/etc/ssl/certs/apt.pem" // - default // CertDir "/etc/ssl/certs/" // - default // CertFile "/etc/ssl/certs/some_deb_server.pem" }