If I try to backup , then i get a failure message saying that the credentials could not be tested, sometimes "server did not answer". vCenter 5.x: 902: UDP: vCenter Server: ESXi 5.x: Managed hosts send a regular heartbeat to the vCenter Server system. hotadd port requirments in vmware | Community - Commvault This article provides information on troubleshooting network and TCP/UDP port connectivity issues using these troubleshooting tools: ping/vmkping to troubleshoot network connectivity between two servers. You should have a process named "vmware-hostd". Check the ESX server's record in DNS to see if the proxy used for this group backup can resolve this ESX host with the same record. vCenter Server, ESXi hosts, and other network components are accessed using predetermined TCP and UDP ports. Note: Log in to your firewall and configure it to allow bi-directional traffic using these ports. 902 – Used to send data to managed hosts. Avoid trouble: If you are creating the MKS Console IP Group for the purposes of connecting to a remote virtual machine console, make sure ports 443, 902, and 903 are open for the IP addresses you define in the IP group. ports Então, estou fazendo isso com SSH. THC SSL Renegotiation DoS Tool for ESXi authd (port 902)