[SATLUG] Bridging ADSL to my private network
Jaret Pfluger
jaret at aberlorn.com
Wed Sep 25 12:34:02 CDT 2002
Woops, I meant my valid connection was 208.191.120.249 and verified by a
ping but then my route -n showed:
Destination Gateway Genmask Flags Metric Ref
Use Iface
208.191.127.254 0.0.0.0 255.255.255.255 UH 0 0 0
ppp0
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0
0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0
0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0
0 lo
0.0.0.0 208.191.127.254 0.0.0.0 UG 0 0
0 ppp0
Sorry for the confusion....
-----Original Message-----
From: satlug-admin at satlug.org [mailto:satlug-admin at satlug.org]On Behalf
Of Jaret Pfluger
Sent: Wednesday, September 25, 2002 11:29 AM
To: satlug at satlug.org
Subject: RE: [SATLUG] Bridging ADSL to my private network
Thanks for the advice re. ppp0. I looked at your website,
http://www.theratshack.net/projects/dns-2/index.html, and tried following
along and am learning quite a bit... I could get my setup to the point where
I can browse the internet but could not get my clients in my internal LAN to
surf the net. My box is using the DHCP server. Then I did the Mandrake 8.2
install and FINALLY was able to get my inside network to talk to the
internet. (after a call to their tech support) Sigh. However, now things
have changed and so I can't surf with Mozilla. Can anyone help correcting my
problem? Am I going to have to re-install Mandrake? Diagnosis follows:
After I do an "adsl-start", then ifconfig shows that I have a ppp0
connection (208.191.127.254) and I verified the connection is valid using
ping.
However, my routing tables have a different IP for ppp0. What's up with
that??? Help? Doing route -n my routing table shows:
Destination Gateway Genmask Flags Metric Ref
Use Iface
208.191.127.254 0.0.0.0 255.255.255.255 UH 0 0
0 ppp0
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0
0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0
0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0
0 lo
0.0.0.0 208.191.127.254 0.0.0.0 UG 0 0
0 ppp0
When I successfully installed Mandrake and allowed it to set up my adsl
config and I was then ABLE to surf the internet, it changed the routing
table to this:
Destination Gateway Genmask Flags Metric Ref
Use Iface
adsl-208.191.12 * 255.255.255.255 UH 0 0
0 ppp0
10.0.0.0 * 255.255.255.0 U 0 0
0 eth0
192.168.0.0 * 255.255.255.0 U 0 0
0 eth1
127.0.0.0 * 255.0.0.0 U 0 0
0 lo
default adsl-208.191.12 0.0.0.0 UG 0 0
0 ppp0
Thanks for any help,
Jaret
-----Original Message-----
From: satlug-admin at satlug.org [mailto:satlug-admin at satlug.org]On Behalf
Of FIRESTORM_v1
Sent: Friday, September 13, 2002 6:09 PM
To: satlug at satlug.org
Subject: Re: [SATLUG] Bridging ADSL to my private network
oh! <badlanguage here>
there is a caveat when using PPPoE... your outside interface is not
the ETHx network card but rather PPP0
Do a /sbin/ifconfig when the connection is up and adjust PMFirewall
accordingly.!
At 08:26 AM 9/13/02 -0700, you wrote:
>Hi. Thanks for the replies. I apologize for the
>confusion b/c I'm learning as I go along here. Let me
>try to clarify my thoughts... Thanks, again. :)
>
>Here's a "graphic" of what I want to do...
>
>Internet
><-->
>{ pppoe(208.x.x.x)/eth0(10.0.0.10)
> RouterComputer eth1(198.168.1.9) }
><-->
>{ private network (198.168.1.x }
>
>I have some more questions.
>
>(1) I used pmfirewall to set up my ipchain
>configuration but now Mozilla doesn't connect to the
>internet. (even though I have a pppoe connection, when
>using ifconfig) Are there some command line tools I can
>use to pinpoint what's going wrong (right) here? And
>fix it? (Is the presentation Chuck gave at the Aug
>SATLug meeting on the internet yet?)
>
>(2) On my private networked computers, what do I use as
>the gateway address to connect to the internet? I
>assume, it's the ip address of eth1, shown in the
>illustration above.
>
>(3) On my router linux box, how do I tell it to "route"
>private network internet requests from eth1 to eth0 and
>then get replies?
>
>Thanks, again, for any advice...
>
>Jaret
>
>
>1) trying to learn about DNS b/c it's something I'm not
>proficient at, new at and it's interesting. I've a good
>book by Craig Hunt, called DNS Server Administration,
>that I've been experimenting with.
>
>2) Practically speaking, I don't know if I need it.
>Maybe someone else can chime in. For my situation, if I
>have a company with 50-150 employees, I was looking for
>a way to manage the network but not forsaking security.
>
>Oh, if there is gobbledegook below, I apologize. (can't
>wait to get this network setup and using Ximian or like
>email client)
>
>On Thu, 12 September 2002, Bruce Dubbs wrote:
>
> >
> > jaret at aberlorn.com wrote:
> >
> > >Hi. In theory maybe I'm starting to answer my own
> > >questions... Am I on the right track?
> > >
> > >On my firewall box (Computer1Router with the two
> > >ethernet cards), I need a proxy DNS.
> > >
> > >On my private network, I configure the gateway.
>Can I
> > >do this on my private network DNS server? Is that
>what
> > >the "Forward" option does?
> > >
> > Why do you need DNS at all? You can use your ISP's
>dns
> > server with a
> > lot less hassle. There is generally no need to roun
> > your own.
> > -- Bruce
> >
> > _______________________________________________
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> > Satlug at satlug.org
> > <a
>href="http://mail.aberlorn.com//jump/http://alamo.satlug.org/mailman/listin
fo/satlug">http://alamo.satlug.org/mailman/listinfo/satlug</a>
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