On 05/29/2014 08:34 AM, m.roth@xxxxxxxxx wrote: > Johnny Hughes wrote: >> On 05/28/2014 02:26 PM, Bowie Bailey wrote: >>> On 5/28/2014 3:00 PM, Michael Hennebry wrote: >>>> On Wed, 28 May 2014, Bowie Bailey wrote: >>>> >>>>> On 5/28/2014 1:29 AM, Michael Hennebry wrote: >>>>>> On Tue, 27 May 2014, John R Pierce wrote: >>>>>> >>>>>>> On 5/27/2014 5:38 PM, Michael Hennebry wrote: > <snip> >>>>>>>> The later editions of fedora didn't like it, so I switched to >>>>>>>> CentOS. Now I have two 64-bit machines and two monitors and a > CenturyLink >>>>>>>> router. Also a KVM switch that I have not taken out of the package. >>>>>>>> My main machine has two video connections and two ethernet > connections, >>>>>>>> eth0 and eth1 .My secondary machine sometimes runs Windows, >>>>>>>> so I'd like it not to have its own global IP address. >>>>>>>> My first thought would be to connect it directly >>>>>>>> to one of the ethernet ports on my main machine. >>>>>>>> >>>>>>>> How do I go about this? > <snip> >>>>> Why do you want to connect the two computers like this? It is usually >>>>> more trouble than it's worth unless you want to use the first computer >>>>> as a firewall or something. Just connect both of them to your router >>>>> and everything should work fine. > <snip> >>>> I want the second computer to not have its own global IP address. >>>> It will at least occasionally run Windows. >>>> I'd prefer not to assume that Windows will >>>> not try to fetch an IP address behind my back. >>> The router should have a built-in switch with multiple network jacks. >>> Just plug the new computer into the router along with the old one and >>> you should be fine. > <snip> >> This is NORMALLY true ... although some ISPs provide multiple real IP >> addresses too. > AFAIK, not unless you pay extra. Well sure. But an ISP can provide you with a router that puts all the machines directly on the Internet with a global address. Since the OP did not seem to know how the router is set up, all I said was to verify how it is set up. It would not be a "Good Thing" to plug a default install of a Windows box into a router that is not also providing firewall features of some kind. While this is not the "normal" (or if you prefer, most common) ISP setup ... it is certainly a plausible setup, so one needs to understand what their ISP is providing and do a proper setup. We should not just assume (hahaha) that the ISP router is sent with the most common setup, we should check :) >> It is easy enough to test though ... plug in the computer that works, >> look at its IP address, if it is in the private range (192.168.x.x, >> 10.x.x.x, 172.16..x.x to 172.31.x.x) then the provided router is >> isolating the real IP on the outside port. >> >> It is also then also normally true that internal ports are NAT'ed and >> isolated from the outside world. > <snip> > I was under the impression that the OP actually doesn't want it visible to > the world, isn't intending to browse or email via it, but that it was for > *only* inside. IF that is the case, he'd have to go into the router and > tell it to assign it an internal IP, and to *not* NAT it. WIthout some type of NATing (if you have an internal IP) it can not touch the Internet .. makes reading email kind of hard :D (I did not say direct NATing .. some type of NAT is how things have an internal address and talk to things that have a real address somewhere else)
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