6.5

2 Create a custom firewall rule on each ESXi server that hosts replication source machines.
See Creating custom firewall rules in VMware ESXi 5.0 (KB 2008226).
3 Enable the custom firewall rule that you created on each ESXi host.
See Allow or Deny Access to an ESXi Service or Management Agent with the vSphere Web Client.
What to do next
Configure the vCloud Tunneling Agent to use the ports that you configured on ESXi hosts.
Customize the Ports that vSphere Replication Uses for Tunneling
By default, the vCloud Tunneling Agent in the vSphere Replication appliance is configured to use TCP
ports ranging between 10000 and 10010 to create tunnels to the cloud. All ESXi instances that might host
replication source virtual machines must have their firewall configured to allow outgoing traffic on these
ports.
For each tunnel to cloud, the vCloud Tunneling Agent allocates one unique port from the specified range.
You can reconfigure ESXi hosts and the vCloud Tunneling Agent to reduce the number of open ports or to
change the ports that are used to create tunnels to cloud.
After you reconfigure the ESXi hosts to use custom ports, you must configure the vCloud Tunneling Agent
to use the same custom ports.
Prerequisites
n
Verify that the ports you selected to use for cloud tunnels are open for outgoing traffic on all ESXi
servers that host replication sources.
n
Verify that you know the IP address of the vSphere Replication appliance in your environment. To
check the IP address of the vSphere Replication appliance, select the vCenter Server in the inventory
tree, click the Configure tab, and click vSphere Replication > About.
n
Verify that you have root user credentials for the vSphere Replication appliance.
n
Verify that TCP port 22 is open on the vSphere Replication appliance, and that SSH connections are
enabled. See topic Unable to Establish an SSH Connection to the vSphere Replication Appliance in
the Using vSphere Replication document.
Procedure
1 Use an SSH client to connect to the vSphere Replication appliance and log in as the root user.
2 Run the following command to configure the ports for tunnel connections.
/opt/vmware/vcta/bin/cell-management-tool
configure-vcta-server -prl LOW -prh HIGH
Where LOW and HIGH define the range of ports to be used for tunnel connections. To use only one
port, type the port number as the value for LOW and HIGH.
vSphere Replication for Disaster Recovery to Cloud
VMware, Inc. 11