Ok, just a minute here, I was slightly wrong. The DNS entries shouldn't
matter assuming that they can be pinged from anywhere on the net. If ip
masquerading is turned on, each laptop would work just fine.
p.s.
Here are the steps to take to make it work.
I will assume that xxx.xxx.xxx.xxx is your ip address on your laptop. I
will then assume that yyy.yyy.yyy.yyy is your wife's ip address on her
laptop. I will further assume that these IP addresses are not valid
Internet IP addresses (ie They are LAN addresses). And last but not least,
I will assume that these DNS entries "CAN" accept DNS requests from anywhere
on the net.
#1 Read the IP Masquerading howto at
http://metalab.unc.edu/mdw/HOWTO/mini/IP-Masquerade.html
#2 Once you know that IP_forwarding and IPMasquerading are supported by the
kernel, and that IP_fowarding is turned on, goto step 3. Make sure that
/etc/sysconfig/network has a line that says something to the affect of
"IP_FOWARDING="YES"". Oh, make sure IP aliasing is supported by your kernel
too. If you installed using Red Hat 5.2, all the previous options should be
supported by the kernel. The IP_FOWARDING is turned of by default though,
so you will have to turn it on.
#3 Issue the following commands.
- ifconfig eth0 xxx.xxx.xxx.xxx netmask yournetmask
- ifconfig eth0:1 yyy.yyy.yyy.yyy netmask hernetmask
- route add -net xxx.xxx.xxx.0 netmask yournetmask eth0
- route add -net yyy.yyy.yyy.0 netmask hernetmask eth0:1
- ipfwadm -F -p deny
- ipfwadm -F -a m -S xxx.xxx.xxx.xxx/yournetmask -D 0.0.0.0/0
- ipfwadm -F -a m -S yyy.yyy.yyy.yyy/hernetmask -D 0.0.0.0/0
#4 This step is an alternate config. If you and your wife's computers are
on similar networks, then do the commands in this step. By similar networks
I mean, you have an IP address of 192.168.1.xxx and netmask of 255.255.0.0
and she has an IP address of 192.168.0.yyy and netmask of 255.255.0.0.
- ifconfig eth0 192.168.0.whatever netmask yournetmask
- route add -net 192.168.0.0 netmask 255.255.0.0 eth0
- ipfwadm -F -p deny
- ipfwadm -F -a m -S 192.168.0.0/16 -D 0.0.0.0/0
The 16 above stands for 255.255.0.0!!!
I hope this helps. If both your configuration and your wife's configuration
were known, it would make it a lot easier to show you what to do! If you
want to, you can send the configuration information.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Trenton D. Adams
> Sent: July 19, 1999 2:31 PM
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: RE: Home network w/ work IP setup?
>
>
> I'd like to add to everyone's information about IP aliasing, and
> masquerading. These are definite needs for what you want. I
> don't know how
> to do what I am about to suggest, but I would think it could be done.
>
> You said that your wife has different DNS's, etc. There might be a way of
> making the linux box intercept the request for, say your wife's DNS, and
> route it to your's. That way, you can setup the linux box for
> your machine,
> and it would also then work with her's!
>
> Could this be done? Anyone???
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of David E. Bernholdt
> > Sent: July 19, 1999 9:30 AM
> > To: [EMAIL PROTECTED]
> > Cc: [EMAIL PROTECTED]
> > Subject: Home network w/ work IP setup?
> >
> >
> > I have a desktop machine at home which runs Linux. My wife and I each
> > have laptops running Win95 and Win3.11 (!) which often come home from
> > work.
> >
> > I'd like to be able to setup a local network & use the desktop machine
> > as a gateway to our ISP, but because changing network configurations
> > in Windows is such a pain, I'd like to be able to plug in the laptops
> > without changing their network configuration. When at home, the
> > laptops don't need to be visible to the outside world -- they'll
> > basically be originating connections only: telnet, ssh, ftp, smtp,
> > pop.
> >
> > I've been looking through the documentation for NAT, but it is still
> > not clear to me if it can support this kind of thing -- it doesn't
> > seem to match up to any of the various configurations they describe.
> >
> > Can anyone tell me whether such a network setup is possible with NAT
> > (or some other way) and point me to the best model(s)/example(s) which
> > I can use to understand how to configure my setup properly?
> >
> > Thanks in advance!
> > --
> > David E. Bernholdt | Email: [EMAIL PROTECTED]
> > Northeast Parallel Architectures Center | Phone: +1 315 443 3857
> > 111 College Place, Syracuse University | Fax: +1 315 443 1973
> > Syracuse, NY 13244-4100 | URL:
http://www.npac.syr.edu
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