On Mon, Apr 03, 2000 at 04:31:53PM -0700, Sean W. Bravener wrote:
> I just had cable set up at home and I want to set up a firewall for
> security reasons. however there is a proble with the whole setup
> and that is: The address is configured via DHCP. IS there a way to
> set up a firewall without knowing what the perm address is? Also
> the ip address lease expires every wednesday (roughly)
You can start your ipchains script with something like this:
LOCALIF=eth0
LOCALIP=`ifconfig $LOCALIF | grep inet | cut -d : -f 2 | cut -d \ -f 1`
LOCALMASK=`ifconfig $LOCALIF | grep Mask | cut -d : -f 4`
LOCALNET="$LOCALIP/$LOCALMASK"
Just because the lease expires, does not mean the IP will change. Most
providers seem to be using 'sticky' IPs. If you want to be safe, you
could always run a cron job every so often and check if the IP has
changed. I worried about this too with DSL at first, but my IP only
has changed when I reboot, and stays the same for months at a time.
--
Hal B
[EMAIL PROTECTED]
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