NFS not mounting using ipaddress of client

Linux and Unix-Like Red Hat
1

Dear All,

I have an NFS Server and client. I am trying to include the ipaddress of the client in servers exports file /etc/exports.

In this case , I could not mount , saying permission denied.

But when I give * symbol in the place of ipaddress ( Global , any IPS )

it is mounting.

Kindly let me know what is the reason behind this.

Rgds
Rj

2

Most types of NFS servers try to resolve the IP to a hostname then do a string comparison with exports (or with netgroup).
To find how the server resolves the IP run the command

getent hosts IP