Need to block port 1521 for all machines except one.

[Rohit khaladkar]

Hi vijay,Thanks for the reply. I applied this rule and restarted service for
iptables. I can still connect to Oracle through other machine.

Thanks!
Rohit

On Tue, Mar 31, 2009 at 2:05 PM, ~~~0Pen ~~~ S0uRce ~~~ <vijay1313 at gmail.com
> wrote:

> Hi Rohit
>
> On Tue, Mar 31, 2009 at 1:16 PM, Rohit khaladkar
> <rohit.khaladkar at gmail.com> wrote:
> > Hi All,As a security measure, I need to block port 1521on the database
> > server , which is used by Oracle for all machines, except one.I tried
> using
> > the following commands to block the port, but for some reason it is not
> > working.Can someone please help me.
> >
> >
> > iptables -A INPUT -s $1 -p tcp --dport 1521 -j ACCEPT
> > iptables -A INPUT -p tcp --dport 1521 -j DROP
> >
> > where $1 is the machine name or ip address of the machine which needs
> access
> > to the port.
>
> try with this rule
> iptables -A INPUT -s ! $1 -p tcp --dport 1521 -j REJECT/DROP
> this is an except rule ! except this machine all would be denied to
> access 1521 port !!!
>
> Just reply me back if this works for you
>
>
> Thanks
> Vijay
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>
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> ~~~ 0Pen ~~~ S0uRce ~~~
>
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