TCP.invited_nodes settings for the entire network


I have a test 11.2.0.4 DB which will eventually become a production DB. I am applying the MARINE DISA to. One of the parameters is to use either the Oracle connection manager or apply tcp.invited_nodes. I have about 100 computers that will access the DB via their client software. What is the best way to apply control STIG. I can't foresee adding all 100 ip addresses in the sqlnet.ora file. Thank you.

Emad Al-Mousa wrote:

Hello

I don't think that 1000 hostnames in your file sqlnet can be easily. If your objective to protect illegal database access, while they cannot access unless you have the name of user and password to one account in the database.

But if someone does not have the credentials (for the argument, let's say he stole their) he can get to the database from anywhere if the network routing allows.

And, uh, the OP said 100 jobs, not 1000.  This fault of typing is an order of magnitude difference.

I feed the pain of the OP.  I also had to deal with the DISA STIG spotted requirements which, in this case, are very short.  Secruity level network (for example invited_nodes of tns) should really be done by the router/firewall. TCP.invited nodes requires constant manual adjustment.  Suppose we go to the effort of registering manually the IP 100.  (The parameter even that accepts several?) One could assume that those are the addresses of the workstations that receive their address from the DHCP server.  So as soon as the administrator creates the list, it starts wrong as data workstations will receive new addresses.  And they will receive them often.  Also, the same environment that requires this solution requires that all windows machines apply to all windows updates "immediately".  So every Tuesday you get a group of workstations is restarted and quite probably get new IP addresses.

Not to mention the new machines to come on the line and old machines being purchased - all without notifying the ADMINISTRATOR to update its list.

To the op.  In the light of what I have described above, if your list of 100 workstations all in the same subnet, your job is actually quite easy.  You just need to crack coding these 100 addresses.  You could do it now.  To avoid the question of maintenance I have indicated above, you want to go ahead and list all * addresses of potential.

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