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Re: network question - is this unusual?

Daniel B. Thurman wrote:
Gerhard Magnus wrote:
I recently had to deal with my ISP about a connectivity problem that
turned out to be on their end. (The tech referred to linux as lie-nux
and insisted on doing everything in XP which I fortunately had
dual-booted.) But in the process of working through this it was
necessary for me to describe the way I'd set up my LAN here and he
seemed incredulous. This wouldn't bother me except that I've gotten this
reaction before from people in the outside world but never an
explanation. So I'm asking: is there something weird about this
structure? Is there some "better" or more standard setup?

The DSL modem Actiontec modem provided by Quest plugs into the phone
jack. The Actiontec is an older model with only one ethernet plug. Since
I have four boxes, two of which are dual booting Fedora and XP, I have
an ethernet cable connecting the modem to the DSL plug of a Linksys
router. I then have separate cables connecting the four outlets on the
router to each of the four boxes. (I did all this cabling at a time
before wireless routing was as available and cheap as it is today.)

Each of the six operating systems (4 linux and 2 XP) has a static IP
address and each has a firewall. I have NFS running on the linux
systems. There's another firewall on the router, which is currently
port-forwarding only ssh and torrent data from the outside world.

I thought I'd check this out before going further....
I have done this many times, as far back as I can remember
so I'd think it's pretty common.  I have found that some of
the first-line techs can be pretty clueless, so you could force
escalate to a higher level tech if you are not getting anywhere
or, do the research yourself.  Kind of hard to do without an
Internet connection ;)

My home system  uses a Westell modem, in bridge mode,
and is hooked to a Trendnet 300Mb/s wireless router.

At another place, I have an ActionTec with Quest branding,
pretty azure/blue glow lights modem.  This is one is wireless
but without the module and I declined the upgrade (cuz it was at
rip-off prices at the time) and got a better deal for an Airlink 150N
wireless router at sale prices.

As with both modems mentioned abovet, the setup is to set the
modems in "bridge" mode  which means, all data is passed through
with no restrictions.  After that,  just hook up the Ethernet cable from
the modem to your (wireless) router's WAN connection.  What's left
then, is to configure the firewall settings on the router.

In bridge mode does you ISP see all the MAC addresses directly and assign IPs? I have been told by friends that the more typical thing is that the modem (wireless + four wires mostly) has DHCP and does NAT so everything takes but a single IP.

My firewall makes sure that happens, my one ISP is a business connection with static IPs rather than DHCP, but the other is a telco, and I keep a low profile.

Bill Davidsen <davidsen tmr com>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot

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