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Connecting to two networks at same time.

Author
18 Oct 2006 2:34 PM
Mike Hyndman
Is it possible to connect to two networks, one wirelessly and one via LAN
card  at the same time?
The IP addresses on both connection methods are assigned manually.
Wireless 10.74.***.***
LAN       10.121.***.***
Subnets same 255.255.255.0

Regards
MH

Author
18 Oct 2006 7:00 PM
MadDog
I don't see why not.  We have desktops with two NIC cards that connect to
different networks.

MD



Show quoteHide quote
"Mike Hyndman" wrote:

> Is it possible to connect to two networks, one wirelessly and one via LAN
> card  at the same time?
> The IP addresses on both connection methods are assigned manually.
> Wireless 10.74.***.***
> LAN       10.121.***.***
> Subnets same 255.255.255.0
>
> Regards
> MH
>
>
>
>
>
Author
18 Oct 2006 7:11 PM
Mike Hyndman
"MadDog" <Mad***@discussions.microsoft.com> wrote in message
news:107A9463-8067-41EF-8464-214FCB98BBA2@microsoft.com...
>I don't see why not.  We have desktops with two NIC cards that connect to
> different networks.
>
MD,

That's what I thought;)
but it's convincing the "owner" of the laptop.
Many thnks
MH
Show quoteHide quote
>
>
>
> "Mike Hyndman" wrote:
>
>> Is it possible to connect to two networks, one wirelessly and one via LAN
>> card  at the same time?
>> The IP addresses on both connection methods are assigned manually.
>> Wireless 10.74.***.***
>> LAN       10.121.***.***
>> Subnets same 255.255.255.0
>>
>> Regards
>> MH
>>
>>
>>
>>
>>
Author
18 Oct 2006 7:45 PM
Jack (MVP-Networking).
Hi
The answer is yes, and partial No.
You can establish a connection and use it in certain ways, depending on the
application.
E.g. You can surf independently the Internet through the two connections at
the same time.
Jack (MVP-Networking).

Show quoteHide quote
"Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
> Is it possible to connect to two networks, one wirelessly and one via LAN
> card  at the same time?
> The IP addresses on both connection methods are assigned manually.
> Wireless 10.74.***.***
> LAN       10.121.***.***
> Subnets same 255.255.255.0
>
> Regards
> MH
>
>
>
>
Author
18 Oct 2006 8:13 PM
Mike Hyndman
"Jack (MVP-Networking)." <J***@discussiongroup.com> wrote in message
news:OzyPg4u8GHA.3384@TK2MSFTNGP05.phx.gbl...
> Hi
> The answer is yes, and partial No.
> You can establish a connection and use it in certain ways, depending on
> the application.
> E.g. You can surf independently the Internet through the two connections
> at the same time.
> Jack (MVP-Networking).

Thanks Jack,

Each network has its own gateway, all the user hopes to do is move files
between networks.
Will the workgroups need to have the same name?

Regards
Mike H
Show quoteHide quote
>
> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
> wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
>> Is it possible to connect to two networks, one wirelessly and one via LAN
>> card  at the same time?
>> The IP addresses on both connection methods are assigned manually.
>> Wireless 10.74.***.***
>> LAN       10.121.***.***
>> Subnets same 255.255.255.0
>>
>> Regards
>> MH
>>
>>
>>
>>
>
>
Author
18 Oct 2006 8:33 PM
Jack (MVP-Networking).
Hi
Yeah, moving files would work at the same time.
The name does not need to be the same.
Jack (MVP-Networking).

Show quoteHide quote
"Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
wrote in message news:eh61tv$lth$1$830fa79f@news.demon.co.uk...
>
> "Jack (MVP-Networking)." <J***@discussiongroup.com> wrote in message
> news:OzyPg4u8GHA.3384@TK2MSFTNGP05.phx.gbl...
>> Hi
>> The answer is yes, and partial No.
>> You can establish a connection and use it in certain ways, depending on
>> the application.
>> E.g. You can surf independently the Internet through the two connections
>> at the same time.
>> Jack (MVP-Networking).
>
> Thanks Jack,
>
> Each network has its own gateway, all the user hopes to do is move files
> between networks.
> Will the workgroups need to have the same name?
>
> Regards
> Mike H
>>
>> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
>> wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
>>> Is it possible to connect to two networks, one wirelessly and one via
>>> LAN card  at the same time?
>>> The IP addresses on both connection methods are assigned manually.
>>> Wireless 10.74.***.***
>>> LAN       10.121.***.***
>>> Subnets same 255.255.255.0
>>>
>>> Regards
>>> MH
>>>
>>>
>>>
>>>
>>
>>
>
>
Author
18 Oct 2006 8:46 PM
Mike Hyndman
"Jack (MVP-Networking)." <J***@discussiongroup.com> wrote in message
news:%233J6TTv8GHA.4012@TK2MSFTNGP04.phx.gbl...
> Hi
> Yeah, moving files would work at the same time.
> The name does not need to be the same.
> Jack (MVP-Networking).

Jack,

Many thanks

Mike H
Show quoteHide quote
>
> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
> wrote in message news:eh61tv$lth$1$830fa79f@news.demon.co.uk...
>>
>> "Jack (MVP-Networking)." <J***@discussiongroup.com> wrote in message
>> news:OzyPg4u8GHA.3384@TK2MSFTNGP05.phx.gbl...
>>> Hi
>>> The answer is yes, and partial No.
>>> You can establish a connection and use it in certain ways, depending on
>>> the application.
>>> E.g. You can surf independently the Internet through the two connections
>>> at the same time.
>>> Jack (MVP-Networking).
>>
>> Thanks Jack,
>>
>> Each network has its own gateway, all the user hopes to do is move files
>> between networks.
>> Will the workgroups need to have the same name?
>>
>> Regards
>> Mike H
>>>
>>> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
>>> wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
>>>> Is it possible to connect to two networks, one wirelessly and one via
>>>> LAN card  at the same time?
>>>> The IP addresses on both connection methods are assigned manually.
>>>> Wireless 10.74.***.***
>>>> LAN       10.121.***.***
>>>> Subnets same 255.255.255.0
>>>>
>>>> Regards
>>>> MH
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>
Author
18 Oct 2006 9:52 PM
Diamontina Cocktail
"Jack (MVP-Networking)." <J***@discussiongroup.com> wrote in message
news:OzyPg4u8GHA.3384@TK2MSFTNGP05.phx.gbl...
> Hi
> The answer is yes, and partial No.
> You can establish a connection and use it in certain ways, depending on
> the application.
> E.g. You can surf independently the Internet through the two connections
> at the same time.
> Jack (MVP-Networking).
>

Eh?

I had a wired network AND wireless and bridged them at the one computer. I
could get through the network from any machine to any other and I could also
get internet from any machine.

So what doesn't work there?
Author
18 Oct 2006 9:51 PM
Diamontina Cocktail
Show quote Hide quote
"Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
> Is it possible to connect to two networks, one wirelessly and one via LAN
> card  at the same time?
> The IP addresses on both connection methods are assigned manually.
> Wireless 10.74.***.***
> LAN       10.121.***.***
> Subnets same 255.255.255.0
>
> Regards
> MH
>
>
>
>

Yep you can. You BRIDGE the networks but you lose manual assign of IP
numbers at that point. Been there and done it myself, before.
Author
18 Oct 2006 10:29 PM
David Hettel
Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants to
retain the two IP address ranges. He actually wants/needs two different LANs
he does not simply wish to combine them into one big LAN. In that case Jack
is correct, it will work, somethings will become more difficult however.

--
David Hettel

Please post any reply as a follow-up message in the news group
for everyone to see.  I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

DISCLAIMER: This posting is provided "AS IS" with no warranties, and
confers no rights


Show quoteHide quote
"Diamontina Cocktail" <l**@australia.com> wrote in message
news:%23xGST%23v8GHA.3620@TK2MSFTNGP04.phx.gbl...
>
> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
> wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
>> Is it possible to connect to two networks, one wirelessly and one via LAN
>> card  at the same time?
>> The IP addresses on both connection methods are assigned manually.
>> Wireless 10.74.***.***
>> LAN       10.121.***.***
>> Subnets same 255.255.255.0
>>
>> Regards
>> MH
>>
>>
>>
>>
>
> Yep you can. You BRIDGE the networks but you lose manual assign of IP
> numbers at that point. Been there and done it myself, before.
>
>
Author
19 Oct 2006 8:49 AM
Mike Hyndman
"David Hettel" <No***@NoWhere.net> wrote in message
news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
> Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants to
> retain the two IP address ranges. He actually wants/needs two different
> LANs he does not simply wish to combine them into one big LAN. In that
> case Jack is correct, it will work, somethings will become more difficult
> however.

David,

Correct, the user needs (would like) to connect to the two networks with the
one PC (laptop) purely for sharing files between the two.
At the moment, he has a desktop PC hardwired through a hub to one network
(fixed IP addresses and "set in stone") and a laptop which he connects to
the second network, wirelessly, again the network using manual IP addresses.
He is using a USB pendrive to transfer files between the two networks.
I have configured the laptop's  LAN to the same address range as the
desktop's but as of yet, not connected it to the hub as he is worried that
things could go "pear shaped" leading to data loss, equipment damage and the
end of civilisation as we know it. ;)

Regards

Mike Hyndman
--
Show quoteHide quote
> David Hettel
>
> Please post any reply as a follow-up message in the news group
> for everyone to see.  I'm sorry, but I don't answer questions
> addressed directly to me in E-mail or news groups.
>
> Microsoft Most Valuable Professional Program
> http://mvp.support.microsoft.com
>
> DISCLAIMER: This posting is provided "AS IS" with no warranties, and
> confers no rights
>
>
> "Diamontina Cocktail" <l**@australia.com> wrote in message
> news:%23xGST%23v8GHA.3620@TK2MSFTNGP04.phx.gbl...
>>
>> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
>> wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
>>> Is it possible to connect to two networks, one wirelessly and one via
>>> LAN card  at the same time?
>>> The IP addresses on both connection methods are assigned manually.
>>> Wireless 10.74.***.***
>>> LAN       10.121.***.***
>>> Subnets same 255.255.255.0
>>>
>>> Regards
>>> MH
>>>
>>>
>>>
>>>
>>
>> Yep you can. You BRIDGE the networks but you lose manual assign of IP
>> numbers at that point. Been there and done it myself, before.
>>
>>
>
>
Author
19 Oct 2006 12:35 PM
Diamontina Cocktail
Show quote Hide quote
"Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
wrote in message news:eh7e81$qag$1$8302bc10@news.demon.co.uk...
>
> "David Hettel" <No***@NoWhere.net> wrote in message
> news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
>> Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants to
>> retain the two IP address ranges. He actually wants/needs two different
>> LANs he does not simply wish to combine them into one big LAN. In that
>> case Jack is correct, it will work, somethings will become more difficult
>> however.
>
> David,
>
> Correct, the user needs (would like) to connect to the two networks with
> the one PC (laptop) purely for sharing files between the two.

Are you saying that he wants to, at times, connect wi-fi to one network and
then at others to the wired one but never both at the same time and share
files by basically using the laptop like a USB drive? Easy really to keep
those two apart but using a USB drive is much less hassle.

> At the moment, he has a desktop PC hardwired through a hub to one network
> (fixed IP addresses and "set in stone") and a laptop which he connects to
> the second network, wirelessly, again the network using manual IP
> addresses. He is using a USB pendrive to transfer files between the two
> networks.
> I have configured the laptop's  LAN to the same address range as the
> desktop's but as of yet, not connected it to the hub as he is worried that
> things could go "pear shaped" leading to data loss, equipment damage and
> the end of civilisation as we know it. ;)

Why is it fixed in stone at the wired one? He could connect wirelessly with
the laptop and have that also connect wired to the wired network and apply a
bridge at the laptop to the networks. If he didnt have to have "set in
stone" manual IP then he could have all he wants easily. It would just be
auto assigned IP.

Failing that, you could have the two networks independent of each other on
the laptop and a shared files folder be the go between.
Author
19 Oct 2006 3:00 PM
Mike Hyndman
Show quote Hide quote
"Diamontina Cocktail" <l**@australia.com> wrote in message
news:uQ1ITs38GHA.4116@TK2MSFTNGP03.phx.gbl...
>
> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
> wrote in message news:eh7e81$qag$1$8302bc10@news.demon.co.uk...
>>
>> "David Hettel" <No***@NoWhere.net> wrote in message
>> news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
>>> Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants to
>>> retain the two IP address ranges. He actually wants/needs two different
>>> LANs he does not simply wish to combine them into one big LAN. In that
>>> case Jack is correct, it will work, somethings will become more
>>> difficult however.
>>
>> David,
>>
>> Correct, the user needs (would like) to connect to the two networks with
>> the one PC (laptop) purely for sharing files between the two.
>
> Are you saying that he wants to, at times, connect wi-fi to one network
> and then at others to the wired one but never both at the same time and
> share files by basically using the laptop like a USB drive? Easy really to
> keep those two apart but using a USB drive is much less hassle.
>
>> At the moment, he has a desktop PC hardwired through a hub to one network
>> (fixed IP addresses and "set in stone") and a laptop which he connects to
>> the second network, wirelessly, again the network using manual IP
>> addresses. He is using a USB pendrive to transfer files between the two
>> networks.
>> I have configured the laptop's  LAN to the same address range as the
>> desktop's but as of yet, not connected it to the hub as he is worried
>> that things could go "pear shaped" leading to data loss, equipment damage
>> and the end of civilisation as we know it. ;)
>
> Why is it fixed in stone at the wired one? He could connect wirelessly
> with the laptop and have that also connect wired to the wired network and
> apply a bridge at the laptop to the networks. If he didnt have to have
> "set in stone" manual IP then he could have all he wants easily. It would
> just be auto assigned IP.
>
> Failing that, you could have the two networks independent of each other on
> the laptop and a shared files folder be the go between.

He has got similar now by using the USB pendrive surely.
>
The wired network consists of three pc's only with one acting as a file
server, (the admin/office network, where all the money info is kept) all
running WXPPro, there is nothing to act as a DHCP server.
The second network (the handrags) consists of 18 hard wired PC's with
wireless access points for laptop access.
He would like to connect to both at the same time.

regards

MH
Show quoteHide quote
>
Author
19 Oct 2006 9:41 PM
Diamontina Cocktail
Show quote Hide quote
"Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
wrote in message news:eh8411$kqq$1$8302bc10@news.demon.co.uk...
>
> "Diamontina Cocktail" <l**@australia.com> wrote in message
> news:uQ1ITs38GHA.4116@TK2MSFTNGP03.phx.gbl...
>>
>> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
>> wrote in message news:eh7e81$qag$1$8302bc10@news.demon.co.uk...
>>>
>>> "David Hettel" <No***@NoWhere.net> wrote in message
>>> news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
>>>> Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants
>>>> to retain the two IP address ranges. He actually wants/needs two
>>>> different LANs he does not simply wish to combine them into one big
>>>> LAN. In that case Jack is correct, it will work, somethings will become
>>>> more difficult however.
>>>
>>> David,
>>>
>>> Correct, the user needs (would like) to connect to the two networks with
>>> the one PC (laptop) purely for sharing files between the two.
>>
>> Are you saying that he wants to, at times, connect wi-fi to one network
>> and then at others to the wired one but never both at the same time and
>> share files by basically using the laptop like a USB drive? Easy really
>> to keep those two apart but using a USB drive is much less hassle.
>>
>>> At the moment, he has a desktop PC hardwired through a hub to one
>>> network (fixed IP addresses and "set in stone") and a laptop which he
>>> connects to the second network, wirelessly, again the network using
>>> manual IP addresses. He is using a USB pendrive to transfer files
>>> between the two networks.
>>> I have configured the laptop's  LAN to the same address range as the
>>> desktop's but as of yet, not connected it to the hub as he is worried
>>> that things could go "pear shaped" leading to data loss, equipment
>>> damage and the end of civilisation as we know it. ;)
>>
>> Why is it fixed in stone at the wired one? He could connect wirelessly
>> with the laptop and have that also connect wired to the wired network and
>> apply a bridge at the laptop to the networks. If he didnt have to have
>> "set in stone" manual IP then he could have all he wants easily. It would
>> just be auto assigned IP.
>>
>> Failing that, you could have the two networks independent of each other
>> on the laptop and a shared files folder be the go between.
>
> He has got similar now by using the USB pendrive surely.
>>
> The wired network consists of three pc's only with one acting as a file
> server, (the admin/office network, where all the money info is kept) all
> running WXPPro, there is nothing to act as a DHCP server.
> The second network (the handrags) consists of 18 hard wired PC's with
> wireless access points for laptop access.
> He would like to connect to both at the same time.
>

Well, as I said you can bridge at the one PC but the easiest thing assuming
the wired PCs are capable of reaching the other network is to put in a
wireless smart bridge capable router for the 3 wired ones if you are trying
to segregate access and limit access to that network to those 3 that you
want to have it then have it also access the other wi-fi router.

Personally, your place has made it hard. I would just have had, assuming
they CANT get wi-fi access reliably, a repeater somewhere in the middle and
a wi-fi router at each end. The end where the secret stuff is that 3
machines ONLY can get on accepts no incoming connections that weren't
initiated at one of those 3 machines. Smart bridging costs more but it
depends what you are doing as to whether it is worth it or not. You could
also have enforced policy restrictions to keep people who aren't hackers out
of those 3 machines.

One thing that I do for companies such as medical practices and tax agents
when they want wi-fi is to set up wi-fi with the best encryption possible
THEN set up access lists. So, the wireless router will accept no incoming
connection from a wi-fi device of a different MAC number. I know you can
EASILY spoof a MAC but most people do NOT know how to do it so it is a
reasonable addition to security. So, you can set up MAC access to the router
with those 3 machines so as to allow them access to it and also get the MAC
address of the router down the other end of the office where all the other
machines are grouped and allow IT access to the router where the other 3
are. However, the individual wi-fi devices on each computer cant get down to
the router where the other 3 are as they are rejected there. You set up the
router down the end with the 3 to NOT give out IP addresses and to relay
DHCP to the other router and then all are on the same network.

It wouldn't be hard to do. No doubt some "IT guy" in your area could do it
in an hour if all the parts are on hand.

While I personally believe that, with XP, manual IP assign is better simply
because the computer gets on to the network and active a lot sooner than
auto assign, in your case, I think the two wi-fi routers set as I explained
above are better. You overcome every problem that way.
Author
20 Oct 2006 10:33 AM
Mike Hyndman
----- Original Message -----
From: "Diamontina Cocktail" <l**@australia.com>
Newsgroups: microsoft.public.windows.networking.wireless
Sent: Thursday, October 19, 2006 10:41 PM
Subject: Re: Connecting to two networks at same time.


Show quoteHide quote
>
> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
> wrote in message news:eh8411$kqq$1$8302bc10@news.demon.co.uk...
>>
>> "Diamontina Cocktail" <l**@australia.com> wrote in message
>> news:uQ1ITs38GHA.4116@TK2MSFTNGP03.phx.gbl...
>>>
>>> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
>>> wrote in message news:eh7e81$qag$1$8302bc10@news.demon.co.uk...
>>>>
>>>> "David Hettel" <No***@NoWhere.net> wrote in message
>>>> news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
>>>>> Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants
>>>>> to retain the two IP address ranges. He actually wants/needs two
>>>>> different LANs he does not simply wish to combine them into one big
>>>>> LAN. In that case Jack is correct, it will work, somethings will
>>>>> become more difficult however.
>>>>
>>>> David,
>>>>
>>>> Correct, the user needs (would like) to connect to the two networks
>>>> with the one PC (laptop) purely for sharing files between the two.
>>>
>>> Are you saying that he wants to, at times, connect wi-fi to one network
>>> and then at others to the wired one but never both at the same time and
>>> share files by basically using the laptop like a USB drive? Easy really
>>> to keep those two apart but using a USB drive is much less hassle.
>>>
>>>> At the moment, he has a desktop PC hardwired through a hub to one
>>>> network (fixed IP addresses and "set in stone") and a laptop which he
>>>> connects to the second network, wirelessly, again the network using
>>>> manual IP addresses. He is using a USB pendrive to transfer files
>>>> between the two networks.
>>>> I have configured the laptop's  LAN to the same address range as the
>>>> desktop's but as of yet, not connected it to the hub as he is worried
>>>> that things could go "pear shaped" leading to data loss, equipment
>>>> damage and the end of civilisation as we know it. ;)
>>>
>>> Why is it fixed in stone at the wired one? He could connect wirelessly
>>> with the laptop and have that also connect wired to the wired network
>>> and apply a bridge at the laptop to the networks. If he didnt have to
>>> have "set in stone" manual IP then he could have all he wants easily. It
>>> would just be auto assigned IP.
>>>
>>> Failing that, you could have the two networks independent of each other
>>> on the laptop and a shared files folder be the go between.
>>
>> He has got similar now by using the USB pendrive surely.
>>>
>> The wired network consists of three pc's only with one acting as a file
>> server, (the admin/office network, where all the money info is kept) all
>> running WXPPro, there is nothing to act as a DHCP server.
>> The second network (the handrags) consists of 18 hard wired PC's with
>> wireless access points for laptop access.
>> He would like to connect to both at the same time.
>>
>
> Well, as I said you can bridge at the one PC but the easiest thing
> assuming the wired PCs are capable of reaching the other network is to put
> in a wireless smart bridge capable router for the 3 wired ones if you are
> trying to segregate access and limit access to that network to those 3
> that you want to have it then have it also access the other wi-fi router.
>
> Personally, your place has made it hard. I would just have had, assuming
> they CANT get wi-fi access reliably, a repeater somewhere in the middle
> and a wi-fi router at each end. The end where the secret stuff is that 3
> machines ONLY can get on accepts no incoming connections that weren't
> initiated at one of those 3 machines. Smart bridging costs more but it
> depends what you are doing as to whether it is worth it or not. You could
> also have enforced policy restrictions to keep people who aren't hackers
> out of those 3 machines.
>
> One thing that I do for companies such as medical practices and tax agents
> when they want wi-fi is to set up wi-fi with the best encryption possible
> THEN set up access lists. So, the wireless router will accept no incoming
> connection from a wi-fi device of a different MAC number. I know you can
> EASILY spoof a MAC but most people do NOT know how to do it so it is a
> reasonable addition to security. So, you can set up MAC access to the
> router with those 3 machines so as to allow them access to it and also get
> the MAC address of the router down the other end of the office where all
> the other machines are grouped and allow IT access to the router where the
> other 3 are. However, the individual wi-fi devices on each computer cant
> get down to the router where the other 3 are as they are rejected there.
> You set up the router down the end with the 3 to NOT give out IP addresses
> and to relay DHCP to the other router and then all are on the same
> network.
>
> It wouldn't be hard to do. No doubt some "IT guy" in your area could do it
> in an hour if all the parts are on hand.
>
> While I personally believe that, with XP, manual IP assign is better
> simply because the computer gets on to the network and active a lot sooner
> than auto assign, in your case, I think the two wi-fi routers set as I
> explained above are better. You overcome every problem that way.

D
Many thanks for a most informative  reply.
It is also a matter af cost, he already has a a number of spare connections
on the hub his "wired" PC is connected to and his laptop has wifi
capability. The only "expense" involved would be the cost of the patch cable
between the laptop and the hub. (I think he can afford that ;)) I haven't
been able to try it out as of yet as he has been away most of the week.

Regards

Mike H
Author
27 Oct 2006 5:40 PM
Leo
This is interesting to me because I'm trying to stop this behavior. We have
several laptop users who notoriously bridge our network and the Internet. Bit
of a security issue with this. Does anyone know of an GPO or other methods to
limit the adapter or network connections to one at a time?



Show quoteHide quote
"Mike Hyndman" wrote:

>
> ----- Original Message -----
> From: "Diamontina Cocktail" <l**@australia.com>
> Newsgroups: microsoft.public.windows.networking.wireless
> Sent: Thursday, October 19, 2006 10:41 PM
> Subject: Re: Connecting to two networks at same time.
>
>
> >
> > "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
> > wrote in message news:eh8411$kqq$1$8302bc10@news.demon.co.uk...
> >>
> >> "Diamontina Cocktail" <l**@australia.com> wrote in message
> >> news:uQ1ITs38GHA.4116@TK2MSFTNGP03.phx.gbl...
> >>>
> >>> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
> >>> wrote in message news:eh7e81$qag$1$8302bc10@news.demon.co.uk...
> >>>>
> >>>> "David Hettel" <No***@NoWhere.net> wrote in message
> >>>> news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
> >>>>> Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants
> >>>>> to retain the two IP address ranges. He actually wants/needs two
> >>>>> different LANs he does not simply wish to combine them into one big
> >>>>> LAN. In that case Jack is correct, it will work, somethings will
> >>>>> become more difficult however.
> >>>>
> >>>> David,
> >>>>
> >>>> Correct, the user needs (would like) to connect to the two networks
> >>>> with the one PC (laptop) purely for sharing files between the two.
> >>>
> >>> Are you saying that he wants to, at times, connect wi-fi to one network
> >>> and then at others to the wired one but never both at the same time and
> >>> share files by basically using the laptop like a USB drive? Easy really
> >>> to keep those two apart but using a USB drive is much less hassle.
> >>>
> >>>> At the moment, he has a desktop PC hardwired through a hub to one
> >>>> network (fixed IP addresses and "set in stone") and a laptop which he
> >>>> connects to the second network, wirelessly, again the network using
> >>>> manual IP addresses. He is using a USB pendrive to transfer files
> >>>> between the two networks.
> >>>> I have configured the laptop's  LAN to the same address range as the
> >>>> desktop's but as of yet, not connected it to the hub as he is worried
> >>>> that things could go "pear shaped" leading to data loss, equipment
> >>>> damage and the end of civilisation as we know it. ;)
> >>>
> >>> Why is it fixed in stone at the wired one? He could connect wirelessly
> >>> with the laptop and have that also connect wired to the wired network
> >>> and apply a bridge at the laptop to the networks. If he didnt have to
> >>> have "set in stone" manual IP then he could have all he wants easily. It
> >>> would just be auto assigned IP.
> >>>
> >>> Failing that, you could have the two networks independent of each other
> >>> on the laptop and a shared files folder be the go between.
> >>
> >> He has got similar now by using the USB pendrive surely.
> >>>
> >> The wired network consists of three pc's only with one acting as a file
> >> server, (the admin/office network, where all the money info is kept) all
> >> running WXPPro, there is nothing to act as a DHCP server.
> >> The second network (the handrags) consists of 18 hard wired PC's with
> >> wireless access points for laptop access.
> >> He would like to connect to both at the same time.
> >>
> >
> > Well, as I said you can bridge at the one PC but the easiest thing
> > assuming the wired PCs are capable of reaching the other network is to put
> > in a wireless smart bridge capable router for the 3 wired ones if you are
> > trying to segregate access and limit access to that network to those 3
> > that you want to have it then have it also access the other wi-fi router.
> >
> > Personally, your place has made it hard. I would just have had, assuming
> > they CANT get wi-fi access reliably, a repeater somewhere in the middle
> > and a wi-fi router at each end. The end where the secret stuff is that 3
> > machines ONLY can get on accepts no incoming connections that weren't
> > initiated at one of those 3 machines. Smart bridging costs more but it
> > depends what you are doing as to whether it is worth it or not. You could
> > also have enforced policy restrictions to keep people who aren't hackers
> > out of those 3 machines.
> >
> > One thing that I do for companies such as medical practices and tax agents
> > when they want wi-fi is to set up wi-fi with the best encryption possible
> > THEN set up access lists. So, the wireless router will accept no incoming
> > connection from a wi-fi device of a different MAC number. I know you can
> > EASILY spoof a MAC but most people do NOT know how to do it so it is a
> > reasonable addition to security. So, you can set up MAC access to the
> > router with those 3 machines so as to allow them access to it and also get
> > the MAC address of the router down the other end of the office where all
> > the other machines are grouped and allow IT access to the router where the
> > other 3 are. However, the individual wi-fi devices on each computer cant
> > get down to the router where the other 3 are as they are rejected there.
> > You set up the router down the end with the 3 to NOT give out IP addresses
> > and to relay DHCP to the other router and then all are on the same
> > network.
> >
> > It wouldn't be hard to do. No doubt some "IT guy" in your area could do it
> > in an hour if all the parts are on hand.
> >
> > While I personally believe that, with XP, manual IP assign is better
> > simply because the computer gets on to the network and active a lot sooner
> > than auto assign, in your case, I think the two wi-fi routers set as I
> > explained above are better. You overcome every problem that way.
>
> D
> Many thanks for a most informative  reply.
> It is also a matter af cost, he already has a a number of spare connections
> on the hub his "wired" PC is connected to and his laptop has wifi
> capability. The only "expense" involved would be the cost of the patch cable
> between the laptop and the hub. (I think he can afford that ;)) I haven't
> been able to try it out as of yet as he has been away most of the week.
>
> Regards
>
> Mike H
>
>
>
Author
29 Oct 2006 8:50 PM
Diamontina Cocktail
You'd be better asking for a GPO in the GPO newsgroup from Microsoft really.
More knowledge on GPOs there.

However, at a router, you can set up accepted connections via MAC. This
doesn't stop bridging at the local computer. If the local computer used by
those people is their own laptop, you can enforce a COMPANY policy saying it
isn't allowed and knock them and anyone not officially approved off the
network, forcing them to use approved and controlled computers only. If it
is a company computer, that should be done in any case.

What you are saying is happening is, in fact, a Human Resources dept issue
and not so much a computer issue. They are known to do it. Do they really
WANT to put the company at risk or do they want to keep their jobs?

Show quoteHide quote
"Leo" <L**@discussions.microsoft.com> wrote in message
news:FD808117-7CE5-476A-BAF4-82BCE9DEEC1A@microsoft.com...
>
> This is interesting to me because I'm trying to stop this behavior. We
> have
> several laptop users who notoriously bridge our network and the Internet.
> Bit
> of a security issue with this. Does anyone know of an GPO or other methods
> to
> limit the adapter or network connections to one at a time?
>
>
>
> "Mike Hyndman" wrote:
>
>>
>> ----- Original Message -----
>> From: "Diamontina Cocktail" <l**@australia.com>
>> Newsgroups: microsoft.public.windows.networking.wireless
>> Sent: Thursday, October 19, 2006 10:41 PM
>> Subject: Re: Connecting to two networks at same time.
>>
>>
>> >
>> > "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
>> > wrote in message news:eh8411$kqq$1$8302bc10@news.demon.co.uk...
>> >>
>> >> "Diamontina Cocktail" <l**@australia.com> wrote in message
>> >> news:uQ1ITs38GHA.4116@TK2MSFTNGP03.phx.gbl...
>> >>>
>> >>> "Mike Hyndman" <tell me yours and I'll send
>> >>> m***@suspisiousbastard.com>
>> >>> wrote in message news:eh7e81$qag$1$8302bc10@news.demon.co.uk...
>> >>>>
>> >>>> "David Hettel" <No***@NoWhere.net> wrote in message
>> >>>> news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
>> >>>>> Perhaps I'm wrong, but I am reading this like Jack is, and Mike
>> >>>>> wants
>> >>>>> to retain the two IP address ranges. He actually wants/needs two
>> >>>>> different LANs he does not simply wish to combine them into one big
>> >>>>> LAN. In that case Jack is correct, it will work, somethings will
>> >>>>> become more difficult however.
>> >>>>
>> >>>> David,
>> >>>>
>> >>>> Correct, the user needs (would like) to connect to the two networks
>> >>>> with the one PC (laptop) purely for sharing files between the two.
>> >>>
>> >>> Are you saying that he wants to, at times, connect wi-fi to one
>> >>> network
>> >>> and then at others to the wired one but never both at the same time
>> >>> and
>> >>> share files by basically using the laptop like a USB drive? Easy
>> >>> really
>> >>> to keep those two apart but using a USB drive is much less hassle.
>> >>>
>> >>>> At the moment, he has a desktop PC hardwired through a hub to one
>> >>>> network (fixed IP addresses and "set in stone") and a laptop which
>> >>>> he
>> >>>> connects to the second network, wirelessly, again the network using
>> >>>> manual IP addresses. He is using a USB pendrive to transfer files
>> >>>> between the two networks.
>> >>>> I have configured the laptop's  LAN to the same address range as the
>> >>>> desktop's but as of yet, not connected it to the hub as he is
>> >>>> worried
>> >>>> that things could go "pear shaped" leading to data loss, equipment
>> >>>> damage and the end of civilisation as we know it. ;)
>> >>>
>> >>> Why is it fixed in stone at the wired one? He could connect
>> >>> wirelessly
>> >>> with the laptop and have that also connect wired to the wired network
>> >>> and apply a bridge at the laptop to the networks. If he didnt have to
>> >>> have "set in stone" manual IP then he could have all he wants easily.
>> >>> It
>> >>> would just be auto assigned IP.
>> >>>
>> >>> Failing that, you could have the two networks independent of each
>> >>> other
>> >>> on the laptop and a shared files folder be the go between.
>> >>
>> >> He has got similar now by using the USB pendrive surely.
>> >>>
>> >> The wired network consists of three pc's only with one acting as a
>> >> file
>> >> server, (the admin/office network, where all the money info is kept)
>> >> all
>> >> running WXPPro, there is nothing to act as a DHCP server.
>> >> The second network (the handrags) consists of 18 hard wired PC's with
>> >> wireless access points for laptop access.
>> >> He would like to connect to both at the same time.
>> >>
>> >
>> > Well, as I said you can bridge at the one PC but the easiest thing
>> > assuming the wired PCs are capable of reaching the other network is to
>> > put
>> > in a wireless smart bridge capable router for the 3 wired ones if you
>> > are
>> > trying to segregate access and limit access to that network to those 3
>> > that you want to have it then have it also access the other wi-fi
>> > router.
>> >
>> > Personally, your place has made it hard. I would just have had,
>> > assuming
>> > they CANT get wi-fi access reliably, a repeater somewhere in the middle
>> > and a wi-fi router at each end. The end where the secret stuff is that
>> > 3
>> > machines ONLY can get on accepts no incoming connections that weren't
>> > initiated at one of those 3 machines. Smart bridging costs more but it
>> > depends what you are doing as to whether it is worth it or not. You
>> > could
>> > also have enforced policy restrictions to keep people who aren't
>> > hackers
>> > out of those 3 machines.
>> >
>> > One thing that I do for companies such as medical practices and tax
>> > agents
>> > when they want wi-fi is to set up wi-fi with the best encryption
>> > possible
>> > THEN set up access lists. So, the wireless router will accept no
>> > incoming
>> > connection from a wi-fi device of a different MAC number. I know you
>> > can
>> > EASILY spoof a MAC but most people do NOT know how to do it so it is a
>> > reasonable addition to security. So, you can set up MAC access to the
>> > router with those 3 machines so as to allow them access to it and also
>> > get
>> > the MAC address of the router down the other end of the office where
>> > all
>> > the other machines are grouped and allow IT access to the router where
>> > the
>> > other 3 are. However, the individual wi-fi devices on each computer
>> > cant
>> > get down to the router where the other 3 are as they are rejected
>> > there.
>> > You set up the router down the end with the 3 to NOT give out IP
>> > addresses
>> > and to relay DHCP to the other router and then all are on the same
>> > network.
>> >
>> > It wouldn't be hard to do. No doubt some "IT guy" in your area could do
>> > it
>> > in an hour if all the parts are on hand.
>> >
>> > While I personally believe that, with XP, manual IP assign is better
>> > simply because the computer gets on to the network and active a lot
>> > sooner
>> > than auto assign, in your case, I think the two wi-fi routers set as I
>> > explained above are better. You overcome every problem that way.
>>
>> D
>> Many thanks for a most informative  reply.
>> It is also a matter af cost, he already has a a number of spare
>> connections
>> on the hub his "wired" PC is connected to and his laptop has wifi
>> capability. The only "expense" involved would be the cost of the patch
>> cable
>> between the laptop and the hub. (I think he can afford that ;)) I haven't
>> been able to try it out as of yet as he has been away most of the week.
>>
>> Regards
>>
>> Mike H
>>
>>
>>
Author
19 Oct 2006 12:26 PM
Diamontina Cocktail
Didn't sound like it to me but the answer is, nonetheless, correct. You CAN
have both wired and wi-fi at once if you bridge the two on one computer
somewhere. You cant retain IP addresses because it all gets handed out DHCP
from the bridge but it does everything you would want - network between
computers, get to internet and so on.

Show quoteHide quote
"David Hettel" <No***@NoWhere.net> wrote in message
news:e7t5bTw8GHA.4644@TK2MSFTNGP04.phx.gbl...
> Perhaps I'm wrong, but I am reading this like Jack is, and Mike wants to
> retain the two IP address ranges. He actually wants/needs two different
> LANs he does not simply wish to combine them into one big LAN. In that
> case Jack is correct, it will work, somethings will become more difficult
> however.
>
> --
> David Hettel
>
> Please post any reply as a follow-up message in the news group
> for everyone to see.  I'm sorry, but I don't answer questions
> addressed directly to me in E-mail or news groups.
>
> Microsoft Most Valuable Professional Program
> http://mvp.support.microsoft.com
>
> DISCLAIMER: This posting is provided "AS IS" with no warranties, and
> confers no rights
>
>
> "Diamontina Cocktail" <l**@australia.com> wrote in message
> news:%23xGST%23v8GHA.3620@TK2MSFTNGP04.phx.gbl...
>>
>> "Mike Hyndman" <tell me yours and I'll send m***@suspisiousbastard.com>
>> wrote in message news:eh5e2c$2q0$1$8300dec7@news.demon.co.uk...
>>> Is it possible to connect to two networks, one wirelessly and one via
>>> LAN card  at the same time?
>>> The IP addresses on both connection methods are assigned manually.
>>> Wireless 10.74.***.***
>>> LAN       10.121.***.***
>>> Subnets same 255.255.255.0
>>>
>>> Regards
>>> MH
>>>
>>>
>>>
>>>
>>
>> Yep you can. You BRIDGE the networks but you lose manual assign of IP
>> numbers at that point. Been there and done it myself, before.
>>
>>
>
>