On Mon, 2001-12-31 at 10:33 -0700, leo wrote: > hello, > > is there any problem configuring a firewall in an dhcp client machine > when an IP address change every time I reboot. In the firewall rules I > denied (DROP) all incoming and OUTCOMING packet messages and after that > this line: > > iptables -A INPUT -s 192.168.16.118 -j ACCEPT > iptables -A OUTPUT -d 192.168.16.118 -j ACCEPT > > lets my IP address can do anything although in the next reboot this IP > changes so that line will not be valid anymore > > my idea to fix this is copying this IP to an enviroment variable (with > export command?) to use it in my firewall rules script taking it's value > for example: > > iptables -A INPUT -s $myIP -j ACCEPT > iptables -A OUTPUT -d $myIP -j ACCEPT > > the part I don't know is how can I copy the IP address from boot > >
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