Optional Configuration Settings
To make the host-based authentication more secure, you may want
to consider the following optional configuration settings:
- With the
keywords in the
file you can filter the
- If you want to allow only global configuration files
/etc/), make sure that you have
the following entry in your
After this modification the
.rhosts files will not be used in host-based
- To force an exact match between the hostname that the client
sends to the server and the client's DNS entry, make sure that you have
the following definition in your
In this case, make sure the
/etc/hosts file has the fully
qualified hostname listed before the short hostname, for example:
184.108.40.206 client.example.com client
Even if you are not using
/etc/hosts as your
primary resolver, you may need to add entries to it for the client and
the server to allow them to resolve each other's fully qualified domain
names (if they are not able to do so otherwise).
Please note that when
is used, host-based authentication through NAT (Network Address
Translation) will not work.
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