Hi,
I know you can block access to oracle database through listener using following configuration in
sqlnet.ora
tcp.validnode_checking = yes
tcp.invited_nodes = (hostname1, hostname2)
tcp.excluded_nodes = (192.168.10.3)
but, is there a way to give IP-Range rather than giving individual address one-by-one.
for e.g
tcp.validnode_checking = yes
tcp.invited_nodes = (192.168.10.*,192.168.20.*)
tcp.excluded_nodes = (192.168.222.*,192.168.333.*)
Thanks.