TCP Wrappers is useless in this case, because I doubt Oracle is compiled with libwrap support.

You need to troubleshoot why iptables isn't working correctly.  check /var/log/messages, dmesg, any output when you try to start it...
The previous sysadmin didn't harden the system.  If you can't get iptables to run, something is broken, not hardened.

Can you not just talk to the windows admin and have him figure out what is trying to use oracle on your cluster and have him disable it?  

Rob Marti
________________________________________
From: redhat-list-bounces@redh... [redhat-list-bounces@redh...] On Behalf Of sunhux G [sunhux@gmai...]
Sent: Friday, September 18, 2009 05:44
To: General Red Hat Linux discussion list
Subject: Re: Exact syntax and examples for iptables

and do I need Tcp wrapper to be running & how to
check/enable Tcp wrapper to run in this case?

On Fri, Sep 18, 2009 at 6:42 PM, sunhux G <sunhux@gmai...> wrote:

>
> and what's the syntax to use in /etc/hosts.deny
> to block the Windows server 10.5.5.25     from
> accessing the cluster for all Tcp/Udp ports?
>
> "ALL:ALL"    is not there in the hosts.deny currently
>
>
>
>
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