One other solution would be to take advantage of a "quirk" in the TCP/IP
definitions.
The range of subnets defined by 192.168.xxx.yyy are defined to be
independent of the Internet. So no router on the Internet will pass on
information packets from a computer with an IP address in that range.
This means that if you define all of the computers on your home LAN except
for your router (I'm assuming you're using a software router like
IPNetRouter if you're talking about using a 2300 to split an Internet
connection, see www.sustworks.com), and then use your one valid IP address
on your router, you can get the same effect.
In other words, if you're using 8.1 or higher (I think it's OT 1.1.3), you
can do what's called multihoming- where you support multiple IP addresses on
one physical interface. So one ethernet port can respond to two different
IP addresses. In this case, one address will be the valid IP address your
DSL modem assigns, and the other address will be something like 192.168.0.1
Since all the machines except the router are in the 192.168.xxx.yyy subnets,
the DSL modem won't pass on any packets from those addresses, and will only
pass on packets from your legitimate address. This way, your router
provides network address translation, and can be "hardened" into being a
more complete firewall, and you only need one ethernet port to do it.
Again, Sustainable Softworks, www.sustworks.com has some fantastic
instructions on how to go about doing all of this with their IPNetRouter
product. Mind you, I don't work for them, I've simply used their product
and been happy with it.
Of course, if performance is something you're really worried about, you
might consider a dedicated DSL modem router-
Yesterday's DealMac.com had a SOHO dedicated broadband router for $78 after
a $50 mail-in rebate.
http://dealmac.com/view.html?d=dayold
I hope this helps,
-Nathan
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 25, 2000 9:16 AM
To: Multiple recipients of DuoList
Subject: [Duo] Ethernet & Server Speed
I am using my new Pismo as my desktop computer and have just gotten DSL.
However, in trying to establish "firewall" security I have found that I must
connect my DSL line directly to my server computer. Unfortunately on the
Pismo,
I only have one Ethernet port, and because it does not have built-in SCSI, I
can't add an Ethernet card for the direct DSL connection since I already
have a
SCSI card in my cardbus slot.
So, here's my question, what if I were to use my 2300 as a server? There is
built-in Ethernet in the dock and I could easily add an Ethernet card in the
Nubus slots. While I know I can do this, would there be any drawbacks? Would
the
DSL connection run slower since the 2300 is a much slower machine? Would the
whole network run slower since everything is now routed through the 2300?
The main drawback I see, is that the 2300 would have to be turned on all the
time now.
----------
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Be sure to visit Mac2400! <http://www.sineware.com/mac2400>
XRouter | Share your DSL or cable modem between multiple computers!
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After-market parts for Macs. ][ 888-356-1104 ][
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----------
Duo/2400 List, The friendliest place on the Net!
A listserv for users and fans of Mac subportables.
FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml>
Be sure to visit Mac2400! <http://www.sineware.com/mac2400>
XRouter | Share your DSL or cable modem between multiple computers!
Dr. Bott | Now $199.99 <http://www.drbott.com/prod/MIH120.html>
PowerBook Guy is | Click here!
Everything PowerBook! | http://www.powerbookguy.com
Midwest Mac Parts ][ <http://www.midwestmac.com>
After-market parts for Macs. ][ 888-356-1104 ][
MacResQ Reader Specials: 2.5GB Seagate SCSI: $119, 4GB IBM SCSI: $199,
Norton Util. 4.0: $29, Mac Parts, Systems & Repairs <http://www.macresq.com>
