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@xxxxxxxxx > wrote: > Hi Rohit > > On Tue, Mar 31, 2009 at 1:16 PM, Rohit khaladkar > <rohit.khaladkar@xxxxxxxxx> 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 > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > > -- > ~~~ 0Pen ~~~ S0uRce ~~~ > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
