Routing, Port Mapping, Internet Sharing etc etc

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Special Forums IP Networking Routing, Port Mapping, Internet Sharing etc etc
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Old 03-30-2004
Question Routing, Port Mapping, Internet Sharing etc etc

I'm running OS X. (OS X Server actually) and right now I use a program called BrickHouse to handle my router configuration. But this program kind of sucks. I'd much rather learn how to configure these programs manually. By these programs, I mean the programs OS X comes with to handle these jobs (natd, ipfw right?). I know BrickHouse is basically just a GUI front end for those. I'd like to be able to manually configure them. So I can SSH into the machine and add a port mapping if I need to, easily and quickly. I can't seem to find any good info on how to do this on the web, I don't know if I'm searching for the wrong thing or what. But if someone wants to walk me through setting something like this up, it would be really appreciated. Thanks.
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iprsetup(8)						      System Manager's Manual						       iprsetup(8)

iprsetup - Internet Protocol router setup SYNOPSIS
/usr/sbin/iprsetup -s /usr/sbin/iprsetup -sd /usr/sbin/iprsetup -r /usr/sbin/iprsetup -rd /usr/sbin/iprsetup -fvalue /usr/sbin/iprsetup -fvalued /usr/sbin/iprsetup -d OPTIONS
Sets ipforwarding and ipgateway to one, which means the system functions as an IP router. This option cannot be combined with the -r option. Resets ipforwarding and ipgateway to zero, which means the system does not function as an IP router. This option cannot be com- bined with the -s and -f options. Sets ipforwarding and ipgateway to one (like the -s option), and also sets ipfirewall to one, which means the system functions as an IP firewall. Additionally, sets ipsrcroute and ipchkredirects according to the specified value. The fol- lowing table shows the valid values and their meaning: ---------------------------------------------------------- Value Meaning ---------------------------------------------------------- 0 Sets both ipsrcroute and ipchkredirects to zero 1 Sets ipsrcroute to zero and ipchkredirects to one 2 Sets ipsrcroute to one and ipchkredirects to zero 3 Sets both ipsrcroute and ipchkredirects to one ---------------------------------------------------------- This option cannot be combined with the -r option. Only application gateways for firewall services use this option. Displays the values of ipforwarding and ipgateway. The values are displayed after the values are changed when combined with the -s, -r, and -f options. DESCRIPTION
The iprsetup command sets the ipgateway and ipforwarding variables in the running kernel allowing your system to function as an Internet Protocol router. When ipfirewall variable is set to one, the following variables are also set: Indicates whether IP source-routed packets are accepted (1) or dropped immediately (0). Indicates whether ICMP Redirect messages are authenticated (1) or accepted with no authentication (0). The iprsetup command is automatically executed by netsetup when you configure your network daemons. It is also executed by the /sbin/init.d/inet script when you reboot your system or restart the network on your system. FILES
Contains the /usr/sbin/iprsetup command Contains the /usr/sbin/iprsetup command SEE ALSO
Network Administration iprsetup(8)

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