IPtables Configuration

 echo " ---"
 
 # Determine the external IP automatically:
 # ----------------------------------------
 
 EXTIP="`$IFCONFIG $EXTIF | $AWK /$EXTIF/'{next}//{split($0,a,":");split(a[2],a," ");print a[1];exit}'`"
 
 # For users who wish to use STATIC IP addresses:
 #EXTIP="your.static.PPP.address"
 echo " External IP: $EXTIP"
 echo " ---"
 
 # Assign the internal TCP/IP network and IP address
 INTNET="192.168.1.0/24"
 INTIP="192.168.1.1/24"
 echo " Internal Network: $INTNET"
 echo " Internal IP: $INTIP"
 echo " ---"
 # Setting a few other local variables
 #
 UNIVERSE="0.0.0.0/0"
 
 #======================================================================
 # Need to verify that all modules have all required dependencies
 #
 echo " - Verifying that all kernel modules are ok"
 $DEPMOD -a
 echo -en " Loading kernel modules: "
 # With the new IPTABLES code, the core MASQ functionality is now either
 # modular or compiled into the kernel. This HOWTO shows ALL IPTABLES
 # options as MODULES. If your kernel is compiled correctly, there is
 # NO need to load the kernel modules manually.
 
 # NOTE: The following items are listed ONLY for informational reasons.
 # There is no reason to manual load these modules unless your