SE/30 as a network router?

Hello,

I'd like to know if it is possible to make a SE/30 work as a
internet  
router. I've read about NAT but it says that we need two
NICs and SE/ 
30 only have one.

Can anyone point me to some solution?

I have a cable connection and I have a switch/hub. Currently
I have a  
PM G4 (MacOSX) sharing my connection with only one NIC so I
think it  
is possible to do it on a SE/30, I'm I right?

I have connected cable modem to swich and it works.

Any sugestions?

Thanks,


Nuno Teixeira

> I'd like to know if it is possible to make a SE/30 work
as a internet
> router. I've read about NAT but it says that we need
two NICs and SE/
> 30 only have one.

This is mostly true, I'm afraid.  (There are some exceptions
- such as
the case where you have an 802.1q-capable switch and NIC,
where you can
set it up as a trunk line and route between vlan interfaces
- but if
you know enough to set that up and make it work right you
wouldn't need
to ask this.)

It *is* possible to have a single-interface machine route
between
different subnets running in the same broadcast domain
("on the same
cable", except that these days Ethernet isn't a bus
technology any
longer, so the term is inaccurate).  This still inflicts
most of the
problems of not routing, so it's of questionable value.  (It
may be a
right answer for you, depending on why you want to route.)

> I have a cable connection and I have a switch/hub. 
Currently I have
> a PM G4 (MacOSX) sharing my connection with only one
NIC so I think
> it is possible to do it on a SE/30, I'm I right?

I'm not clear what you're trying to end up with - that is,
what problem
you think turning your SE/30 into a router would solve. 
Most of the
scenarios I can imagine end up with your box being not just
a router
but also a NAT system (or an application-level proxy, in
which case
it's not really a router in the usual sense of the term).

I can't see any reason, except possibly performance, why
your SE/30
would be unable to handle what your G4 can...but that's
speaking
conceptually; whether the software can do it out of the box
is a
completely different question.

/~ The ASCII				der Mouse
 / Ribbon Campaign
 X  Against HTML	       mouserodents.montreal.qc.ca
/  Email!	     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3
27 4B

Hello,

First I'm sorry because I don't express myself correctly. I
was  
thinking wrong about what I really want to do.

I will be more precise now:

First I want to give a job to do to my SE/30 and I think
that a SE/30  
as a gateway or NAT is a good start to my home network. I
have  
already Apache ready for future use too.

I think that I can connect 2 NICs on my SE/30 ataching a
Farallon in  
a Asante passthrough slot. Maybe I get no space inside SE/30
but then  
I will remove the external case.

I will test in NetBSD to see if both are recognised
correctly and  
then I will configure it as a NAT server.

Could you give me your oppinion about this?

Yours,

	Nuno Teixeira



On 2007/02/06, at 04:14, der Mouse wrote:

>> I'd like to know if it is possible to make a SE/30
work as a internet
>> router. I've read about NAT but it says that we
need two NICs and SE/
>> 30 only have one.
>
> This is mostly true, I'm afraid.  (There are some
exceptions - such as
> the case where you have an 802.1q-capable switch and
NIC, where you  
> can
> set it up as a trunk line and route between vlan
interfaces - but if
> you know enough to set that up and make it work right
you wouldn't  
> need
> to ask this.)
>
> It *is* possible to have a single-interface machine
route between
> different subnets running in the same broadcast domain
("on the same
> cable", except that these days Ethernet isn't a
bus technology any
> longer, so the term is inaccurate).  This still
inflicts most of the
> problems of not routing, so it's of questionable value.
 (It may be a
> right answer for you, depending on why you want to
route.)
>
>> I have a cable connection and I have a switch/hub. 
Currently I have
>> a PM G4 (MacOSX) sharing my connection with only
one NIC so I think
>> it is possible to do it on a SE/30, I'm I right?
>
> I'm not clear what you're trying to end up with - that
is, what  
> problem
> you think turning your SE/30 into a router would solve.
 Most of the
> scenarios I can imagine end up with your box being not
just a router
> but also a NAT system (or an application-level proxy,
in which case
> it's not really a router in the usual sense of the
term).
>
> I can't see any reason, except possibly performance,
why your SE/30
> would be unable to handle what your G4 can...but that's
speaking
> conceptually; whether the software can do it out of the
box is a
> completely different question.
>
> /~ The ASCII				der Mouse
>  / Ribbon Campaign
>  X  Against HTML	       mouserodents.montreal.qc.ca
> /  Email!	     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8
B3 27 4B

Nuno Teixeira

It's entirely possible to set up NAT with only one NIC, but
for it to
be truely secure you'd need "personal" firewalls
on each machine to
block traffic coming in from the internet (no thanks to ARP
spoofing
and whatnot). If you use a switch instead of a dumb router
the risk
will be minimal as well.

NetBSD has pf, which is amazingly simple to set up for this
task. I've
only done it with two or more NICs, but I'm quite sure it
would take
minimal changes to make it work with only one.

I say go for it 

If I had another NIC I'd be using my Centris 650 as a
router. More
than enough computing horsepower for simple networks,
although if you
have a huge network the ARP tables and DHCP (if you use it)
tables
will max out the RAM pretty quick. Each open connection eats
up memory
moreso than CPU power. I used a 486-66DX2 as a router for a
long time
without any preformance difference vs. what I use now. But
this was
before bittorrent came along...

Best of luck!

-
 Michael Griffith

On 2/7/07, Nuno Teixeira <nunotexmac.com> wrote:
> Hello,
>
> First I'm sorry because I don't express myself
correctly. I was
> thinking wrong about what I really want to do.
>
> I will be more precise now:
>
> First I want to give a job to do to my SE/30 and I
think that a SE/30
> as a gateway or NAT is a good start to my home network.
I have
> already Apache ready for future use too.
>
> I think that I can connect 2 NICs on my SE/30 ataching
a Farallon in
> a Asante passthrough slot. Maybe I get no space inside
SE/30 but then
> I will remove the external case.
>
> I will test in NetBSD to see if both are recognised
correctly and
> then I will configure it as a NAT server.
>
> Could you give me your oppinion about this?
>
> Yours,
>
>        Nuno Teixeira
>
>
>
> On 2007/02/06, at 04:14, der Mouse wrote:
>
> >> I'd like to know if it is possible to make a
SE/30 work as a internet
> >> router. I've read about NAT but it says that
we need two NICs and SE/
> >> 30 only have one.
> >
> > This is mostly true, I'm afraid.  (There are some
exceptions - such as
> > the case where you have an 802.1q-capable switch
and NIC, where you
> > can
> > set it up as a trunk line and route between vlan
interfaces - but if
> > you know enough to set that up and make it work
right you wouldn't
> > need
> > to ask this.)
> >
> > It *is* possible to have a single-interface
machine route between
> > different subnets running in the same broadcast
domain ("on the same
> > cable", except that these days Ethernet isn't
a bus technology any
> > longer, so the term is inaccurate).  This still
inflicts most of the
> > problems of not routing, so it's of questionable
value.  (It may be a
> > right answer for you, depending on why you want to
route.)
> >
> >> I have a cable connection and I have a
switch/hub.  Currently I have
> >> a PM G4 (MacOSX) sharing my connection with
only one NIC so I think
> >> it is possible to do it on a SE/30, I'm I
right?
> >
> > I'm not clear what you're trying to end up with -
that is, what
> > problem
> > you think turning your SE/30 into a router would
solve.  Most of the
> > scenarios I can imagine end up with your box being
not just a router
> > but also a NAT system (or an application-level
proxy, in which case
> > it's not really a router in the usual sense of the
term).
> >
> > I can't see any reason, except possibly
performance, why your SE/30
> > would be unable to handle what your G4 can...but
that's speaking
> > conceptually; whether the software can do it out
of the box is a
> > completely different question.
> >
> > /~ The ASCII                         der Mouse
> >  / Ribbon Campaign
> >  X  Against HTML             mouserodents.montreal.qc.ca
> > /  Email!         7D C8 61 52 5D E7 2D 39  4E F1
31 3E E8 B3 27 4B
>
> Nuno Teixeira
>
>
>
>

Hello,

Today I've tried to connect both cards on SE/30 but it
doesn't work.  
MacOS 7.5 reports an error about TCP and NetBSD only detects
Asante  
and not Farallon.

:(

Anyone knows why? I've read about a guy with 2 devices (vga
card and  
accelarator) attached to an Asante card.

Thanks,

	Nuno Teixeira


On 2007/02/08, at 01:34, mngrifgmail.com wrote:

> It's entirely possible to set up NAT with only one NIC,
but for it to
> be truely secure you'd need "personal"
firewalls on each machine to
> block traffic coming in from the internet (no thanks to
ARP spoofing
> and whatnot). If you use a switch instead of a dumb
router the risk
> will be minimal as well.
>
> NetBSD has pf, which is amazingly simple to set up for
this task. I've
> only done it with two or more NICs, but I'm quite sure
it would take
> minimal changes to make it work with only one.
>
> I say go for it 
>
> If I had another NIC I'd be using my Centris 650 as a
router. More
> than enough computing horsepower for simple networks,
although if you
> have a huge network the ARP tables and DHCP (if you use
it) tables
> will max out the RAM pretty quick. Each open connection
eats up memory
> moreso than CPU power. I used a 486-66DX2 as a router
for a long time
> without any preformance difference vs. what I use now.
But this was
> before bittorrent came along...
>
> Best of luck!
>
> -
> Michael Griffith
>
> On 2/7/07, Nuno Teixeira <nunotexmac.com> wrote:
>> Hello,
>>
>> First I'm sorry because I don't express myself
correctly. I was
>> thinking wrong about what I really want to do.
>>
>> I will be more precise now:
>>
>> First I want to give a job to do to my SE/30 and I
think that a SE/30
>> as a gateway or NAT is a good start to my home
network. I have
>> already Apache ready for future use too.
>>
>> I think that I can connect 2 NICs on my SE/30
ataching a Farallon in
>> a Asante passthrough slot. Maybe I get no space
inside SE/30 but then
>> I will remove the external case.
>>
>> I will test in NetBSD to see if both are recognised
correctly and
>> then I will configure it as a NAT server.
>>
>> Could you give me your oppinion about this?
>>
>> Yours,
>>
>>        Nuno Teixeira
>>
>>
>>
>> On 2007/02/06, at 04:14, der Mouse wrote:
>>
>> >> I'd like to know if it is possible to make
a SE/30 work as a  
>> internet
>> >> router. I've read about NAT but it says
that we need two NICs  
>> and SE/
>> >> 30 only have one.
>> >
>> > This is mostly true, I'm afraid.  (There are
some exceptions -  
>> such as
>> > the case where you have an 802.1q-capable
switch and NIC, where you
>> > can
>> > set it up as a trunk line and route between
vlan interfaces -  
>> but if
>> > you know enough to set that up and make it
work right you wouldn't
>> > need
>> > to ask this.)
>> >
>> > It *is* possible to have a single-interface
machine route between
>> > different subnets running in the same
broadcast domain ("on the  
>> same
>> > cable", except that these days Ethernet
isn't a bus technology any
>> > longer, so the term is inaccurate).  This
still inflicts most of  
>> the
>> > problems of not routing, so it's of
questionable value.  (It may  
>> be a
>> > right answer for you, depending on why you
want to route.)
>> >
>> >> I have a cable connection and I have a
switch/hub.  Currently I  
>> have
>> >> a PM G4 (MacOSX) sharing my connection
with only one NIC so I  
>> think
>> >> it is possible to do it on a SE/30, I'm I
right?
>> >
>> > I'm not clear what you're trying to end up
with - that is, what
>> > problem
>> > you think turning your SE/30 into a router
would solve.  Most of  
>> the
>> > scenarios I can imagine end up with your box
being not just a  
>> router
>> > but also a NAT system (or an application-level
proxy, in which case
>> > it's not really a router in the usual sense of
the term).
>> >
>> > I can't see any reason, except possibly
performance, why your SE/30
>> > would be unable to handle what your G4
can...but that's speaking
>> > conceptually; whether the software can do it
out of the box is a
>> > completely different question.
>> >
>> > /~ The ASCII                         der
Mouse
>> >  / Ribbon Campaign
>> >  X  Against HTML             mouserodents.montreal.qc.ca
>> > /  Email!         7D C8 61 52 5D E7 2D 39  4E
F1 31 3E E8 B3 27 4B
>>
>> Nuno Teixeira
>>
>>
>>
>>

Nuno Teixeira

Nuno Teixeira wrote:
> Hello,
> 
> Today I've tried to connect both cards on SE/30 but it
doesn't work. 
> MacOS 7.5 reports an error about TCP and NetBSD only
detects Asante and 
> not Farallon.
> 
> :(
> 
> Anyone knows why? I've read about a guy with 2 devices
(vga card and 
> accelarator) attached to an Asante card.
> 
> Thanks,
> 
>     Nuno Teixeira

I'm betting both are trying to use the same address.  One of
the two 
cards at least should have jumpers to let you choose between
one of four 
(A B C D) nubus addresses.  Change the address and you
should be set.

Joshua Coombs

Hello!!!

I did it! I configured Assante to slot A and both cards are 

recognised in NetBSD now.

Now I will configure SE/30 as a NAT!

Thanks very much,

	Nuno

On 2007/02/09, at 16:09, Joshua Coombs wrote:

>
>
> Nuno Teixeira wrote:
>> Hello,
>> Today I've tried to connect both cards on SE/30 but
it doesn't  
>> work. MacOS 7.5 reports an error about TCP and
NetBSD only detects  
>> Asante and not Farallon.
>> :(
>> Anyone knows why? I've read about a guy with 2
devices (vga card  
>> and accelarator) attached to an Asante card.
>> Thanks,
>>     Nuno Teixeira
>
> I'm betting both are trying to use the same address. 
One of the  
> two cards at least should have jumpers to let you
choose between  
> one of four (A B C D) nubus addresses.  Change the
address and you  
> should be set.
>
> Joshua Coombs

Nuno Teixeira