Vembu BDR Suite has a web console that allows you to manage whole backup and replication infrastructure. There is no need to install any client and management console will be accessible from anywhere you want.
VMware has released patches for fixing security issues on ESXi. ESXi 6.0, 6.5 and 6.7 are live versions and there is no patch for older version. So if there is any older version in your environment, update the ESXi server immediately to supported versions.