User`s guide

Create and Manage Cloud Clusters with MathWorks Cloud Center
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Cluster Access and Security Groups
Set Cluster Access
Cluster Access settings control which computers can access your Amazon cluster from the
Internet. To access the Cluster Access setting in the Cloud Center, click Cluster Access
beneath Preferences in the navigator. Cluster access comprises a list of IP ranges for
the computers that can access your cloud cluster. Your access might already be set up for
your Amazon Web Services account, or you might have to create or modify them here.
The IP addresses in the listing must be those of the machines as seen from the Internet,
which is often different from their local IP addresses. To be sure you get the proper IP
address, see your administrator, or use one of the many available websites that can
return this information to you.
The format for an access listing is a 4-field IP address, optionally followed by a slash (/)
and a value identifying the number of bits of the address to use for matching starting
from the left of the address. There are eight bits per field in the IP address. For example,
suppose the IP address of your machine is 123.123.234.56. The format to allow only that
exact IP address access to your cluster is:
123.123.234.56/32
The /32 indicates 32 bits, which requires matching on all four fields of the address. (If no
field matching bits are specified, the default is 32, matching the entire address exactly.)
Matching only part of the address allows a range of IP addresses to access your cluster.
This might be useful when accessing the cluster from different client machines on the
same network, or if your client machine has an assigned IP address that might change.
For example, if you want to allow other machines from your network to access your
cluster if their IP addresses start with 123.123, regardless of what the last two fields are,
you could format the address this way: