Joe, Thanks. This is perfectly clear, and accurate. The DSL modem uses Ethernet, not USB; I *do* have two NICs (10/100) in the Mac, and the Mac is known by 192.168.1.2 to the DSL modem, while it is 192.168.2.1 to the LAN. I *do* have some control of the DSL modem, although as I said it seems it won't allow me to increase the number of LAN clients. (Maybe this is because I didn't change the LAN-side subnet mask from 255.255.255.252 to 255.255.255.0? I *can* change _Size of Client IP Pool_) There are more settings available to me using Telnet than using the Web-based configurator...
I wonder if an alternate solution is to reset the DSL modem's DHCP from _server_ to _relay_ (and toggle _bridge_ from _No_ to _Yes_, one of the Telnet-only _General_ settings?). I can set the Mac to access the WAN through PPPoE; wouldn't the Mac itself then be assigned the public IP address? In this case I would not be running two DHCP servers. But I'm a little hesitant to try this because I don't know what else would require setup. On the modem, there is a _NAT mode_ which can be _None_ or _SUA Only_ and a port/IP table under _SUA Only_; is this where I open ports? The OS X NAT router gives me no control at all other than 'on' and 'off.' (The only way I know what its IP range is, is by looking on a downstream machine.) Joe Brown -----Original Message----- From: Joe Kexel <[EMAIL PROTECTED]> Sent: Jan 8, 2005 9:57 PM To: [email protected] Subject: Re: Getting past *two* NAT routers I am uncertain of exactly what your network diagram would be. I will assume 2 nics in the Mac. One going to the modem (USB?) and one to your lan. In that case, the DHCP servers are not a problem for each serves a different network. Not knowing all the details of OS X Internet Sharing, I guess its a NAT configuration. Your big problem is that you are a running a NAT network behind another NAT network. You will need port forwards on both the router (to the Mac) and the Mac to each machine you wish to connect to. Use port 5900 to the Mac. Normally for my clients I just connect to one machine via port forwarding or SSH port forwarding and then use a vncviewer on that machine to get to the rest of the lan. The double NAT can be difficult, if you do not have control of the router. If, you wish to have open ports for each machine directly, then you continue with 5901 to the Mac and forward that to Machine A, 5902 to Machine B and so on. I hope this helps. I know more of Linux than OS X, I run Yellow Dog on a G4. Anyway, good luck! > Hello, > > My DSL is served by PPPoE; the DSL modem is a mini-router allowing only > one (192.168.1.2) address. I think I understand the port assignments when > a single router serves multiple boxes. But I serve my LAN via a second > DHCP server, the Mac OS X box itself (Internet Sharing). So not only the > modem but also the main box is both a LAN client and a DHCP server; it > doesn't have a "real" IP address to begin with, and in fact is known by > two (the PPPoE modem is given the real one). What will get me to the other > machines on the LAN? Manual port setting? > _______________________________________________ > VNC-List mailing list > [email protected] > To remove yourself from the list visit: > http://www.realvnc.com/mailman/listinfo/vnc-list _______________________________________________ VNC-List mailing list [email protected] To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list _______________________________________________ VNC-List mailing list [email protected] To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
