A question just came up that I thought was pretty elementary, but 
apparently not.

The issue: can a router be used by more than one computer to share an 
internet connection if they use a static IP address?  It's done with 
dynamic IP's all the time.

A friend's system is set up with a static IP, and for some reason I 
wasn't able to tap into the wireless connection he uses to connect his 
second computer, even knowing the password.

Thanks for any insight.

Stu

On 11 Sep 2008 22:13:24 GMT, Stuart Bronstein 
enriched this group when s/he wrote:

>A question just came up that I thought was pretty elementary, but 
>apparently not.
>
>The issue: can a router be used by more than one computer to share an 
>internet connection if they use a static IP address?  It's done with 
>dynamic IP's all the time.
>
>A friend's system is set up with a static IP, and for some reason I 
>wasn't able to tap into the wireless connection he uses to connect his 
>second computer, even knowing the password.
>
>Thanks for any insight.
>
>Stu

Most systems under my control have static IP addresses. Can you give a
few more details?

My own system here has 4 computers, a network printer, a cable modem
and router plus a wireless access point. IP addresses work like this:-

192.168.0.1	Server.
192.168.0.21	Computer 2
192.168.0.23	Computer 3
192.168.0.25	Computer 4
192.168.0.201	Network printer
192.168.0.253	Wireless access point
192.168.0.254	Router.

DHCP server is set to allocate, when requested, numbers in the range
128-200 through the wireless access point. This means I can just fire
up machines that are in the workshop and get network/internet access
without a fixed address, but normally I do tend to give them a fixed
address as I use Real VNC for remote control quite a lot.

Any of that help?

-- 
Bob.

Ye Old One  wrote:
> Stuart Bronstein
>>
>>The issue: can a router be used by more than one computer to share
>>an internet connection if they use a static IP address?  It's done
>>with dynamic IP's all the time.
> 
> Most systems under my control have static IP addresses. Can you
> give a few more details?

I don't have a lot more details at the moment.  As far as I'm aware 
he has the same number of computers as he has IP addresses.  I'll be 
going into his office and assuming one of those addresses.  I'd also 
like to connect my laptop wirelessly, without getting more addresses 
if possible.  

What I'd like to do is to hook up a router to the connection 
associated with the one IP address and use that for both of my 
computers to connect to the internet.

Does that help?

> DHCP server is set to allocate, when requested, numbers in the
> range 128-200 through the wireless access point. This means I can
> just fire up machines that are in the workshop and get
> network/internet access without a fixed address, but normally I do
> tend to give them a fixed address as I use Real VNC for remote
> control quite a lot. 
> 
> Any of that help?

Too geeky for me at this point.  Thanks.

Stu

Stuart Bronstein wrote:
> A question just came up that I thought was pretty elementary, but 
> apparently not.
> 
> The issue: can a router be used by more than one computer to share an 
> internet connection if they use a static IP address?  It's done with 
> dynamic IP's all the time.
> 
which side of the router is static?

If it's the router - ISP side then it should make no difference.
If it's the router - computer side then it matters, as if fixed, then 
the router won't allocate you an IP address via DHCP so you won't be 
able to connect, even with a password. You have to manually assign your 
own (computer) IP and it has to be within the range the router accepts, 
which may be limited to just the computers it knows about so there won't 
be any free addresses for you without adding one to the router.

(that's kinda what Bob sed)

Nev

In article , 
spamtrap@lexregia.com says...
> A question just came up that I thought was pretty elementary, but 
> apparently not.
> 
> The issue: can a router be used by more than one computer to share an 
> internet connection if they use a static IP address?  It's done with 
> dynamic IP's all the time.

YES, but....

> A friend's system is set up with a static IP, and for some reason I 
> wasn't able to tap into the wireless connection he uses to connect his 
> second computer, even knowing the password.

You need to know the list of current IP addresses used, before doing 
anything else.

e.g.	192.168.x.a	router
      192.168.x.b computer 1
	192.168.x.c computer 2

Get the following details from the existing working computers network
connection

If using Windows XP
	Open network connection,
	right click on LAN/Wireless
	Select 'support' tab

	(or command prompt use 'ipconfig /a')

The following details are needed

	Netmask		(e.g. 255.255.255.0)
	Default Gateway	(probably the same as the router)
	DNS server(s)	(probably the same as the router)

First option is configure the router to allow a SMALL DHCP range that
will not interfer with the current fixed addresses.

Second option configure any new computers LAN/Wireless connections
to use different IP address, but ensure the other settings are done
as well to match other systems.

-- 
Paul Carpenter          | paul@pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/>    PC Services
<http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font
<http://www.gnuh8.org.uk/>  GNU H8 - compiler & Renesas H8/H8S/H8 Tiny
<http://www.badweb.org.uk/> For those web sites you hate

On 12 Sep 2008 00:23:33 GMT, Stuart Bronstein 
enriched this group when s/he wrote:

>Ye Old One  wrote:
>> Stuart Bronstein
>>>
>>>The issue: can a router be used by more than one computer to share
>>>an internet connection if they use a static IP address?  It's done
>>>with dynamic IP's all the time.
>> 
>> Most systems under my control have static IP addresses. Can you
>> give a few more details?
>
>I don't have a lot more details at the moment.  As far as I'm aware 
>he has the same number of computers as he has IP addresses.  I'll be 
>going into his office and assuming one of those addresses.  I'd also 
>like to connect my laptop wirelessly, without getting more addresses 
>if possible.  
>
>What I'd like to do is to hook up a router to the connection 
>associated with the one IP address and use that for both of my 
>computers to connect to the internet.
>
>Does that help?

Yes, I think I see what you mean. And yes, I've got a company in
London that is doing exactly that. You will need a cable router, that
will take the incoming line, sometimes with a cable modem in between,
and provide you with a private network on your side of the router.

I can highly recommend the Draytek Vigor 2910, not cheap but well
worth the money (http://www.draytek.co.uk/products/vigor2910.html).
There is also a version with built in wireless networking as well.

You will also find a number of guides on that site which may help
explain things for you.
>
>> DHCP server is set to allocate, when requested, numbers in the
>> range 128-200 through the wireless access point. This means I can
>> just fire up machines that are in the workshop and get
>> network/internet access without a fixed address, but normally I do
>> tend to give them a fixed address as I use Real VNC for remote
>> control quite a lot. 
>> 
>> Any of that help?
>
>Too geeky for me at this point.  Thanks.

Well, if you get stuck then give me a shout and I will do what I can
to help.
>
>Stu
-- 
Bob.

Ye Old One  wrote:
> Stuart Bronstein 

>>What I'd like to do is to hook up a router to the connection 
>>associated with the one IP address and use that for both of my 
>>computers to connect to the internet.
>>
>>Does that help?
> 
> Yes, I think I see what you mean. And yes, I've got a company in
> London that is doing exactly that. You will need a cable router,
> that will take the incoming line, sometimes with a cable modem in 
> between, and provide you with a private network on your side of the 
> router.

Thanks, Bob.  I'll give it a try and see what happens.

> I can highly recommend the Draytek Vigor 2910, not cheap but well
> worth the money (http://www.draytek.co.uk/products/vigor2910.html).
> There is also a version with built in wireless networking as well.

I'm using a Belkin router/wireless now with dynamic IP, and I'll see if 
it works.  If not I'll check out the Draytek.

> Well, if you get stuck then give me a shout and I will do what I can
> to help.

Thanks again.  I appreciate your help.

Stu

nev young  wrote:
> Stuart Bronstein wrote:
>> 
>> The issue: can a router be used by more than one computer to
>> share an internet connection if they use a static IP address? 
>> It's done with dynamic IP's all the time.
>> 
> which side of the router is static?

I don't think I understand the question.  The static IP's are from the 
internet service provider.  Is that what you meant?

> If it's the router - ISP side then it should make no difference.
> If it's the router - computer side then it matters, as if fixed,
> then the router won't allocate you an IP address via DHCP so you
> won't be able to connect, even with a password. You have to
> manually assign your own (computer) IP and it has to be within the
> range the router accepts, which may be limited to just the
> computers it knows about so there won't be any free addresses for
> you without adding one to the router.

I don't understand the concept of computer-side.  And if ISP side 
doesn't mean IP's assigned by the ISP, I don't understand that either.

Sometimes it frightens me that I'm much more knowledgeable than the 
average user, and I'm so woefully unknowledgeable.

Stu

Paul Carpenter  wrote:

> First option is configure the router to allow a SMALL DHCP range
> that will not interfer with the current fixed addresses.
> 
> Second option configure any new computers LAN/Wireless connections
> to use different IP address, but ensure the other settings are
> done as well to match other systems.

Thanks, Paul.  That's all a little beyond me at the moment.  I'm trying 
to avoid asking for additional static IP addresses because there's a 
fairly large charge for it.

I'll give it a try and see what happens.

Stu

Stuart Bronstein wrote:
> nev young  wrote:
>> Stuart Bronstein wrote:
>>> The issue: can a router be used by more than one computer to
>>> share an internet connection if they use a static IP address? 
>>> It's done with dynamic IP's all the time.
>>>
>> which side of the router is static?
> 
> I don't think I understand the question.  The static IP's are from the 
> internet service provider.  Is that what you meant?
> 
right lets try.

(All these numbers are made up and are arbitrary).

There is an ISP who assigns an IP address for the site eg 62.63.64.65

You can think of this as the IP address of the data on the telephone wire.

At your end of the phone is your modem and router.

Everything passes through the router to the local computer(s).

The local computers have their own local IP addresses assigned by the 
router. Something like 192.168.0.1

So to try and do it graphically.

ISP <-- phone line (62.63.64.65) --> router /

/ router <-- ethernet cable (192.168.0.1) --> computer1
          <-- ethernet cable (192.168.0.2) --> computer2
          <-- ethernet cable (192.168.0.3) --> computer3
          <- built inside the box (192.168.0.254) -> router / gateway

Now the 62.63.64.65 is assigned by the ISP. If it's always that IP then 
it's static, if it changes then it's dynamic and you don't really need 
to concern yourself with it. The ISP will make sure data goes to the IP 
you're using.

The IPs 192.168.etc are assigned by the router one for each local 
computer. If these are fixed then they are static. if they change they 
are dynamic. To be dynamic the router needs to be set up to use a range 
of addresses for dynamic IPs. These are allocated by the DHCP (Dynamic 
Host Configuration Protocol) within the router. eg. 192.168.0.100-149 
would set up 50 dynamic IPs in the range 100-149. These are used on a 
first come first served basis.

But sometimes (well often really) for security each computer is given a 
fixed IP and will always connect to the router using that IP and there 
are NO spares set up. So nobody can set up a new computer and join the 
network.

Any computer on the local network (the LAN) can talk to any other as the 
router will tell it the IP address of the machine. So computer1 
(192.168.0.1) can talk to computer2 (192.168.0.2). The router will take 
care of routing the data. Hence it's name; router, and pass the data 
down the correct bit of wire. If any computer on the LAN wishes to talk 
to the ISP they send their data to the gateway (192.168.0.254). When the 
reply comes back from the internet the router "magically" routes the 
reply back to the correct local IP.

Wireless works the same way (more or less) but instead of lengths of 
ethernet cable they use radio waves.

Does that make it clearer or have I made it worse?

Of course it's always possible that he is using a hub or a bridge and 
just calling it a router as they look the same but do different things 
as they work at different levels of the OSI layer.

But that's a whole different can of worms.

Nev

nev young  wrote:

> right lets try.
> 
> (All these numbers are made up and are arbitrary).
> 
> There is an ISP who assigns an IP address for the site eg
> 62.63.64.65 
> 
> You can think of this as the IP address of the data on the
> telephone wire. 

Ok, I'm familiar with that.

> At your end of the phone is your modem and router.
> 
> Everything passes through the router to the local computer(s).
> 
> The local computers have their own local IP addresses assigned by
> the router. Something like 192.168.0.1

I'm familiar with that as well, but more vaguely.

> So to try and do it graphically.
> 
> ISP <-- phone line (62.63.64.65) --> router /
> 
> / router <-- ethernet cable (192.168.0.1) --> computer1
>           <-- ethernet cable (192.168.0.2) --> computer2
>           <-- ethernet cable (192.168.0.3) --> computer3
>           <- built inside the box (192.168.0.254) -> router /
>           gateway 
> 
> Now the 62.63.64.65 is assigned by the ISP. If it's always that IP
> then it's static, if it changes then it's dynamic and you don't
> really need to concern yourself with it. The ISP will make sure
> data goes to the IP you're using.

My friend seems to think that having a static IP prevented a local 
router from dividing the signal and assigning local IP's.  It didn't 
make sense to me, but I didn't know enough about how it worked to be 
sure.

> The IPs 192.168.etc are assigned by the router one for each local 
> computer. If these are fixed then they are static. if they change
> they are dynamic. To be dynamic the router needs to be set up to
> use a range of addresses for dynamic IPs. These are allocated by
> the DHCP (Dynamic Host Configuration Protocol) within the router.
> eg. 192.168.0.100-149 would set up 50 dynamic IPs in the range
> 100-149. These are used on a first come first served basis.

This starts to be the part I have trouble understanding.  I 
understand the concept, but I didn't know that connections to a local 
router can be either static or dynamic.  Wouldn't that be a function 
of the programming of the router?  

> But sometimes (well often really) for security each computer is
> given a fixed IP and will always connect to the router using that
> IP and there are NO spares set up. So nobody can set up a new
> computer and join the network.

That may be what is being done with my friend's wireless connection.  
When his laptop wasn't connected (as far as I know) and I entered the 
password, the computer indicated that it was connected, but no web 
page would open.  I forget what the error message was.

When I move my office there I will be assigned a static IP address 
that I can connect by ethernet cable.  Actually the IP address is 
assigned to a particular plug, and as long as I plug my computer into 
it, it will work.

What I'm wondering is if I connect that plug to a wireless router, 
can I then connect both of my computers with it?  Sounds like you're 
saying the answer is probably yes.
 
> Does that make it clearer or have I made it worse?

You've made it a bit more clear.  I think what you're saying is that 
the way I simplistically thought it worked is about how it actually 
works.  I still don't understand if, based on the fact that 
connections to the local router can be either static or dynamic, is 
something I need to worry about at this point.
 
> Of course it's always possible that he is using a hub or a bridge
> and just calling it a router as they look the same but do
> different things as they work at different levels of the OSI
> layer. 

Actually he called his a bridge.  I'm not at all familiar with that.  
But I don't think it really matters much if I can connect my two 
computers to my own router.

Thanks again!  I always like to learn what I can about this kind of 
things.

Stu

In article ,
Stuart Bronstein   wrote:

>My friend seems to think that having a static IP prevented a local 
>router from dividing the signal and assigning local IP's.  It didn't 
>make sense to me, but I didn't know enough about how it worked to be 
>sure.

Hi Stu,

The technique is generally called masquerading, or sometimes NAT
(Network Address Translation).  The router translates between local and
external IP addresses according to whatever schemes apply on each side.
The translations can be one to one or can be many to one, the most comon
case where many internal computers share one outgoing address.

Obviously incoming packets all bear the same IP address but the
masquerading software knows which outwards connections were initiated by
which internal host and keeps track of where the various return packets
are to go to.

>This starts to be the part I have trouble understanding.  I 
>understand the concept, but I didn't know that connections to a local 
>router can be either static or dynamic.  Wouldn't that be a function 
>of the programming of the router?  

Yes they can, and yes it is.  Most routers will hand out dynamic addresses
to any local computers which aren't configured with static ones.  But to
confuse things further you can program the router so that it hands out
a fixed address to particular computers, giving the illusion of static
addresses.

This is how my home network works: my own machine and the hub machine have
configured static addresses because it is important that I can connect
to the hub when the dynamic addressing daemon (dhcpd) isn't running.

My work laptop and Sammi's PC have fixed addresses, allocated by dhcpd.
So I get the benefit of a known and fixed IP locally, but if I take the
laptop somewhere else it will configure itself for their network using
their dhcpd.  It's also easy to reconfigure them and their routing,
or to add new fixed IPs at the one central point.  Any other random PCs
and games consoles get fully dynamic addresses from a pool.

The firewall rules apply most strictly to the pool, and the fixed IPs
each have their own set of firewall permissions.

The router doesn't even have to be the machine which hands out the IP
addresses, masquerading is quite a separate function.  So I'm sure your
computers will both work on your friend's wireless network however you
get your address.

>                                       Actually the IP address is 
>assigned to a particular plug, and as long as I plug my computer into 
>it, it will work.

It's possible to restrict networks like this but IME it would be rare.
Only specialist networking kit tends to have the facility to restrict
IPs to physical ports, general purpose home/SOHO routers don't.

>What I'm wondering is if I connect that plug to a wireless router, 
>can I then connect both of my computers with it?  Sounds like you're 
>saying the answer is probably yes.

The router doesn't even have to be the machine which hands out the IP
addresses, masquerading is quite a separate function.  So I'm sure your
computers will both work on your friend's wireless network however you
get your address.

>> Of course it's always possible that he is using a hub or a bridge
>> and just calling it a router as they look the same but do
>> different things as they work at different levels of the OSI
>> layer. 
>
>Actually he called his a bridge.  I'm not at all familiar with that.  
>But I don't think it really matters much if I can connect my two 
>computers to my own router.

A hub connects a number of physical cables together into a network
segment.  It (generally) forwards everything from any port onto all of
the other ports and performs no filtering or translation.

A bridge connects two network segments and forwards everything between
them, performing any necessary translations.  You'd use it to connect
two office networks or parts of networks as if they were one.

A router connects two networks but not as one, it is selective in what it
forwards to where, according to rules it is programmed with.  Having said
that, bridging two wireless routers together is a common way to extend
wireless networks beyond the range of one.  But if you are being bridged
in the office it will be to another (fixed or wireless) network device,
to which the internet router is then probably attached.

You can even plug your own masquerading router into his bridge and it
ought to work, though you'd probably need to program it on its external
side with whatever static address, nameserver and gateway details he
gave you for his local network.

HTH

Nick
-- 
Serendipity: http://www.leverton.org/blosxom (last update 9th August 2008)
        "The Internet, a sort of ersatz counterfeit of real life"
                -- Janet Street-Porter, BBC2, 19th March 1996

Nick Leverton  wrote:

> Hi Stu,

Hi Nick!  How are the kids?

> Yes they can, and yes it is.  Most routers will hand out dynamic
> addresses to any local computers which aren't configured with
> static ones.  But to confuse things further you can program the
> router so that it hands out a fixed address to particular
> computers, giving the illusion of static addresses.

That makes sense.  I know there are some advantages of a static 
address - the only one I can think of is that you can run a website 
from the machine connected to one, if I recall correctly.  Are there 
others?

>>Actually the IP address is 
>>assigned to a particular plug, and as long as I plug my computer
>>into it, it will work.
> 
> It's possible to restrict networks like this but IME it would be
> rare. Only specialist networking kit tends to have the facility to
> restrict IPs to physical ports, general purpose home/SOHO routers
> don't. 

The reason I said that is that apparently all the static IP addresses 
are now in use.  I unplugged one of the computers already hooked up 
to one and plugged it into my laptop.  And I was able to connect 
without trouble. 

>>Actually he called his a bridge.  I'm not at all familiar with
>>that.  But I don't think it really matters much if I can connect
>>my two computers to my own router.
> 
> A hub connects a number of physical cables together into a network
> segment.  It (generally) forwards everything from any port onto
> all of the other ports and performs no filtering or translation.
> 
> A bridge connects two network segments and forwards everything
> between them, performing any necessary translations.  You'd use it
> to connect two office networks or parts of networks as if they
> were one. 

Thanks.  That makes sense in concept.  But why would he say that it's 
the bridge that allows his laptop to connect wirelessly to the 
system?  Sounds to me like it's connected by static IP as well, 
whether on the local or ISP level I don't know.

> But if you are being bridged in the office it will be to another
> (fixed or wireless) network device, to which the internet router
> is then probably attached. 

Perhaps it's a bridge between the fixed and the wireless networks.  
But why they would set it up that way eludes me.

> You can even plug your own masquerading router into his bridge and
> it ought to work, though you'd probably need to program it on its
> external side with whatever static address, nameserver and gateway
> details he gave you for his local network.

That's a little beyond me and actually makes me a little dizzy to 
read.  I'll see what I can do with the router I've got.

Thanks again!  I really appreciate all the help and information.

Stu

On 12 Sep 2008 20:37:43 GMT, Stuart Bronstein 
enriched this group when s/he wrote:

>What I'm wondering is if I connect that plug to a wireless router, 
>can I then connect both of my computers with it?  Sounds like you're 
>saying the answer is probably yes.
> 
Given the rest of the information you have given I would say yes.

-- 
Bob.

Ye Old One  wrote:
> Stuart Bronstein  wrote:
> 
>>What I'm wondering is if I connect that plug to a wireless router, 
>>can I then connect both of my computers with it?  Sounds like you're 
>>saying the answer is probably yes.
>> 
> Given the rest of the information you have given I would say yes.

Thanks, Bob, and Nev and Nick and Paul.  I'll let you know how it comes 
out.

Stu

In uk.singles,  (Stuart Bronstein) wrote in
::

>Ye Old One  wrote:
>> Stuart Bronstein
>>>
>>>The issue: can a router be used by more than one computer to share
>>>an internet connection if they use a static IP address?  It's done
>>>with dynamic IP's all the time.
>> 
>> Most systems under my control have static IP addresses. Can you
>> give a few more details?
>
>I don't have a lot more details at the moment.  As far as I'm aware 
>he has the same number of computers as he has IP addresses.  I'll be 
>going into his office and assuming one of those addresses.  I'd also 
>like to connect my laptop wirelessly, without getting more addresses 
>if possible.  
>
>What I'd like to do is to hook up a router to the connection 
>associated with the one IP address and use that for both of my 
>computers to connect to the internet.
>
>Does that help?

No problem.  Routers use NAT (Netword Address Translation) to hide your
non-routeable IPs from the outside world (you can choose not to do this,
and have real IPs, but it means that you then need to buy a block of
IPs).

The router remembers which PC instigated a connection, and routes return
packets accordingly, based on whence they came.

I've had as many as 20 PCs on one fixed IP.  I now have an 8-IP block,
but for other reasons.
-- 
Marc

Some cause happiness wherever they go; others whenever they go. (Oscar Wilde)

In uk.singles,  (Ye Old One) wrote in
::

>On 12 Sep 2008 00:23:33 GMT, Stuart Bronstein 
>enriched this group when s/he wrote:
>
>>Ye Old One  wrote:
>>> Stuart Bronstein
>>>>
>>>>The issue: can a router be used by more than one computer to share
>>>>an internet connection if they use a static IP address?  It's done
>>>>with dynamic IP's all the time.
>>> 
>>> Most systems under my control have static IP addresses. Can you
>>> give a few more details?
>>
>>I don't have a lot more details at the moment.  As far as I'm aware 
>>he has the same number of computers as he has IP addresses.  I'll be 
>>going into his office and assuming one of those addresses.  I'd also 
>>like to connect my laptop wirelessly, without getting more addresses 
>>if possible.  
>>
>>What I'd like to do is to hook up a router to the connection 
>>associated with the one IP address and use that for both of my 
>>computers to connect to the internet.
>>
>>Does that help?
>
>Yes, I think I see what you mean. And yes, I've got a company in
>London that is doing exactly that. You will need a cable router, that
>will take the incoming line, sometimes with a cable modem in between,
>and provide you with a private network on your side of the router.
>
>I can highly recommend the Draytek Vigor 2910, not cheap but well
>worth the money (http://www.draytek.co.uk/products/vigor2910.html).
>There is also a version with built in wireless networking as well.

+1 vote for Draytek.  Really solid gear, if you can't run to Cisco or
similar.
-- 
Marc

Some cause happiness wherever they go; others whenever they go. (Oscar Wilde)

In uk.singles,  (Stuart Bronstein) wrote in
::

>My friend seems to think that having a static IP prevented a local 
>router from dividing the signal and assigning local IP's.  It didn't 
>make sense to me, but I didn't know enough about how it worked to be 
>sure.

He's wrong.
-- 
Marc

Some cause happiness wherever they go; others whenever they go. (Oscar Wilde)

In uk.singles,  (Stuart Bronstein) wrote in
::

>Nick Leverton  wrote:
>
>> Hi Stu,
>
>Hi Nick!  How are the kids?
>
>> Yes they can, and yes it is.  Most routers will hand out dynamic
>> addresses to any local computers which aren't configured with
>> static ones.  But to confuse things further you can program the
>> router so that it hands out a fixed address to particular
>> computers, giving the illusion of static addresses.
>
>That makes sense.  I know there are some advantages of a static 
>address - the only one I can think of is that you can run a website 
>from the machine connected to one, if I recall correctly.  Are there 
>others?

Yes- I run my own mailserver, for instance.  You need a static IP, and a
PTR record and an SPF record to have much chance of doing this
successfully.
-- 
Marc

Some cause happiness wherever they go; others whenever they go. (Oscar Wilde)

In message , Stuart Bronstein
wrote:

> Paul Carpenter  wrote:
> 
>> First option is configure the router to allow a SMALL DHCP range
>> that will not interfer with the current fixed addresses.
>> 
>> Second option configure any new computers LAN/Wireless connections
>> to use different IP address, but ensure the other settings are
>> done as well to match other systems.
> 
> Thanks, Paul.  That's all a little beyond me at the moment.  I'm trying
> to avoid asking for additional static IP addresses because there's a
> fairly large charge for it.
> 
> I'll give it a try and see what happens.
> 
If he's got eight routeable addresses from the ISP then what you need to do
is program the WAN side of your NAT router to use one of those addresses
(preferably one he's not currently using) and to have it allocate DHCP
addresses on the LAN side to your PCs. Just make sure you've got the
security sorted if it's a wireless router.

-- 
Dave
mail da ve@llondel.org (without the space)
http://www.llondel.org
So many gadgets, so little time

Marc Wilson  wrote:
> (Ye Old One) wrote in

>>Yes, I think I see what you mean. And yes, I've got a company in
>>London that is doing exactly that. You will need a cable router,
>>that will take the incoming line, sometimes with a cable modem in
>>between, and provide you with a private network on your side of
>>the router. 
>>
>>I can highly recommend the Draytek Vigor 2910, not cheap but well
>>worth the money
>>(http://www.draytek.co.uk/products/vigor2910.html). There is also
>>a version with built in wireless networking as well. 
> 
> +1 vote for Draytek.  Really solid gear, if you can't run to Cisco
> or similar.

Thanks to everyone.  I did get it working.  I used the Belkin router 
that I'd had before, and it seems to be working well.  Mostly I was 
very pleased by their tech support people.  I had to call them twice - 
once for the initial hookup and then again for the wireless.  These 
were among the most pleasant, helpful and knowledgeable techs I've ever 
talked to.

I had earlier gotten a USB wireless card from D-Link.  As far as I can 
tell their software was horrid, and their tech support people were 
completely useless.  I called back six time, once talking to a level tw 
tech.  And none of them had a clue what to do with the problem I was 
having.  I'll be staying away from them in future.

Stu