That's why I originally said that it depends on things like IP addressing
and where you locate your firewall. My firewall is in my router. I have an
Ascend router, with their SecureConnect Manager software, which can be
administered through the ethernet from a desktop. I inherited this
configuration when was hired on here. I don't know if I would have chosen
it had I had the opportunity, but, nevertheless, it works fine for us.
Someone else also responded regarding the fact that I have a block of ip
addresses. As I said, I inherited this configuration. But I have also
installed systems with similar configurations elsewhere. The reason is that
the T1 is shared between voice and data (a number of channels are split off
for voice, and a number for data using a CSU/DSU). A block of IP addresses
is included in the package from AT&T. I have found that it is possible to
save enough money on the voice side, to completely pay for the data side.
Of course this all depends on how much the origination fees are for the T1,
how much voice traffic you can channel over the T1, how many channels you
configure for data, and other factors. It is also very possible to spend
way too much money in this configuration.
B
-----Original Message-----
From: H. Dale Puls [mailto:DPuls@...]
Sent: Friday, February 02, 2001 9:28 AM
To: vantage@yahoogroups.com
Subject: RE: [Vantage] (off topic)Internet Connection alternatives
Brian,
Your system is wide open to outside hackers if you do not have some type of
firewall between your T1 and a simple network hub. Any published shares are
directly available to anyone who stumbles onto the IP address of any of your
computers. Each machine, if I understand your configuration correctly, is
effectively directly connected to the internet and could easily be
compromised.
H. Dale Puls
-----Original Message-----
From: Brian Davis [mailto:bdavis@...]
Sent: Friday, February 02, 2001 8:45 AM
To: 'vantage@yahoogroups.com'
Subject: RE: [Vantage] (off topic)Internet Connection alternatives
Maybe I'm confused too, but in my network, the T1 goes to a network hub.
There is only one NIC in my server, which also goes to a network hub. It
seems to me that there are multiple options, depending on things like IP
addressing, and where you locate your firewall. I'm not an expert, but it
may be that two NICs would allow you to have internal IP addressing and a
single published address. I can't see any other reason for it, unless there
are security benefits.
B
-----Original Message-----
From: Wendy Bowen (Pursche) [mailto:wpursche@...]
Sent: Friday, February 02, 2001 6:09 AM
To: vantage@yahoogroups.com
Subject: Re: [Vantage] (off topic)Internet Connection alternatives
I'm confused again..............for dial-up, the workstations go to the hub,
then to the NIC in the NAT computer, then to the modem in the NAT computer,
then dials-up, then goes out to the Internet through the phone line from the
NAT computer modem, right? For DSL & T1, the workstations go to the hub,
then to the NIC in the NAT/Firewall, then through another NIC out to the
router, then through a DSL/T1 connection out to the Internet, right? So, in
that scenario one NIC receives/sends info. from the workstations to the
other NIC, and the other NIC sends/receives info. from the Internet to the
other NIC, right?
Really, I'm not hopeless, it's just a new thing to me!
~Wendy
and where you locate your firewall. My firewall is in my router. I have an
Ascend router, with their SecureConnect Manager software, which can be
administered through the ethernet from a desktop. I inherited this
configuration when was hired on here. I don't know if I would have chosen
it had I had the opportunity, but, nevertheless, it works fine for us.
Someone else also responded regarding the fact that I have a block of ip
addresses. As I said, I inherited this configuration. But I have also
installed systems with similar configurations elsewhere. The reason is that
the T1 is shared between voice and data (a number of channels are split off
for voice, and a number for data using a CSU/DSU). A block of IP addresses
is included in the package from AT&T. I have found that it is possible to
save enough money on the voice side, to completely pay for the data side.
Of course this all depends on how much the origination fees are for the T1,
how much voice traffic you can channel over the T1, how many channels you
configure for data, and other factors. It is also very possible to spend
way too much money in this configuration.
B
-----Original Message-----
From: H. Dale Puls [mailto:DPuls@...]
Sent: Friday, February 02, 2001 9:28 AM
To: vantage@yahoogroups.com
Subject: RE: [Vantage] (off topic)Internet Connection alternatives
Brian,
Your system is wide open to outside hackers if you do not have some type of
firewall between your T1 and a simple network hub. Any published shares are
directly available to anyone who stumbles onto the IP address of any of your
computers. Each machine, if I understand your configuration correctly, is
effectively directly connected to the internet and could easily be
compromised.
H. Dale Puls
-----Original Message-----
From: Brian Davis [mailto:bdavis@...]
Sent: Friday, February 02, 2001 8:45 AM
To: 'vantage@yahoogroups.com'
Subject: RE: [Vantage] (off topic)Internet Connection alternatives
Maybe I'm confused too, but in my network, the T1 goes to a network hub.
There is only one NIC in my server, which also goes to a network hub. It
seems to me that there are multiple options, depending on things like IP
addressing, and where you locate your firewall. I'm not an expert, but it
may be that two NICs would allow you to have internal IP addressing and a
single published address. I can't see any other reason for it, unless there
are security benefits.
B
-----Original Message-----
From: Wendy Bowen (Pursche) [mailto:wpursche@...]
Sent: Friday, February 02, 2001 6:09 AM
To: vantage@yahoogroups.com
Subject: Re: [Vantage] (off topic)Internet Connection alternatives
I'm confused again..............for dial-up, the workstations go to the hub,
then to the NIC in the NAT computer, then to the modem in the NAT computer,
then dials-up, then goes out to the Internet through the phone line from the
NAT computer modem, right? For DSL & T1, the workstations go to the hub,
then to the NIC in the NAT/Firewall, then through another NIC out to the
router, then through a DSL/T1 connection out to the Internet, right? So, in
that scenario one NIC receives/sends info. from the workstations to the
other NIC, and the other NIC sends/receives info. from the Internet to the
other NIC, right?
Really, I'm not hopeless, it's just a new thing to me!
~Wendy
----- Original Message -----
From: Joe Konecny <jkonecn@...>
To: <vantage@yahoogroups.com>
Sent: Thursday, February 01, 2001 3:34 PM
Subject: Re: [Vantage] (off topic)Internet Connection alternatives
> That was if you were going to use DSL or T1. For dialup
> you only need one.
>
> "Wendy Bowen (Pursche)" wrote:
> >
> > I'm curious, why would 2 NICs be needed for the box?
> >
> > Wendy Bowen (Pursche)
> > Network Administrator
> > Schmald Tool & Die, Inc.
> > (810) 743-1600 ext.323
> > wpursche@...
> >
> > ----- Original Message -----
> > From: Wayne Cox <wmc@...>
> > To: <vantage@yahoogroups.com>
> > Sent: Tuesday, January 30, 2001 4:03 PM
> > Subject: Re: [Vantage] (off topic)Internet Connection alternatives
> >
> > > At 03:01 PM 1/30/2001 , you wrote:
> > > >........is NAT (Network Address Translation) software? Or is it
> > > >something that you get with your router or LAN modem? Or is it
something
> > >
> > > Yes, and Yes. It's a software based protocol; probably originated on
> > unix
> > > systems, and is included with almost all of them today. You can grab
an
> > > old PC, throw in two NICs, load up FreeBSD or Linux, and roll your own
> > > Router / NAT / Firewall box.
> > >
> > > Nearly all IP routers have it too; and surprise... most of them are
also
> > > running some striped down unix in their firmware.
> > >
> > > I haven't messed with many cable and DSL "modems" yet, but I think
most
> > > require a separate router. The el'cheapo SMC Barricade I blabbed
about
> > > last week will work for many simple situations.
> > >
> > > -Wayne
> > >
> > >
> > >
> > > To unsubscribe from this group, send an email to:
> > > vantage-unsubscribe@egroups.com
> > >
> > >
> >
> >
> > To unsubscribe from this group, send an email to:
> > vantage-unsubscribe@egroups.com
>
>
> To unsubscribe from this group, send an email to:
> vantage-unsubscribe@egroups.com
>
>
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