Enable service in VMWare ESXI firewall

To list your current configuration:
# esxcli network firewall ruleset list

To enable sshClient to enable copying using ssh:

#esxcli network firewall ruleset set -e true -r sshClient

For older esxi versions (5 and below)
# esxcli network firewall ruleset set –ruleset-id sshClient –enabled yes

To refresh the configuration:
# esxcli network firewall refresh