Wireless laptop IP is different than what router sees

I have a laptop connected to internet through a wireless router. When I
do ipconfig on the laptop it shows 192.168.0.3. However, the user list
on the router web interface doesn't have this IP. Instead, the list
shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
correspond to other wired PCs on the same network. TCP/IP settings on
the laptop obtain IP address and DNS server automatically.

Basically, I am trying to setup a ftp server on my wireless laptop at
home but to be able to do that the router needs to see this laptop
correctly after which I can forward ports 20-21 to the laptop's IP.

This works perfectly if I "wire" the laptop to the router. The laptop
gets 192.168.1.4 and the router's user list show the same IP as well.
So it all makes perfect sense when the laptop is wired. I am not sure
how to get this to work for wireless connection. I have been fiddling
with this for a few days now, any pointers will be greatly appreciated.

Thanks,

John22

john22 wrote:
> I have a laptop connected to internet through a wireless router. When I
> do ipconfig on the laptop it shows 192.168.0.3. However, the user list
> on the router web interface doesn't have this IP. Instead, the list
> shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
> correspond to other wired PCs on the same network. TCP/IP settings on
> the laptop obtain IP address and DNS server automatically.
>
> Basically, I am trying to setup a ftp server on my wireless laptop at
> home but to be able to do that the router needs to see this laptop
> correctly after which I can forward ports 20-21 to the laptop's IP.

You should be using a static IP on the router and not a DHCP IP from the
router when doing the above, because if those ports are forwarded to a
machine using a DHCP IP, the IP might change and the forwarding rules
will not work any more.
>
> This works perfectly if I "wire" the laptop to the router. The laptop
> gets 192.168.1.4 and the router's user list show the same IP as well.
> So it all makes perfect sense when the laptop is wired. I am not sure
> how to get this to work for wireless connection. I have been fiddling
> with this for a few days now, any pointers will be greatly appreciated.
>

Configure the wireless NIC to use a static IP on the router.

Duane

"Duane Arnold" <"Do forget about it"@PleaeDo.BET> wrote in message
news:c_ptg.7243$(E-Mail Removed) ink.net...
> john22 wrote:
>> I have a laptop connected to internet through a wireless router. When I
>> do ipconfig on the laptop it shows 192.168.0.3. However, the user list
>> on the router web interface doesn't have this IP. Instead, the list
>> shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
>> correspond to other wired PCs on the same network. TCP/IP settings on
>> the laptop obtain IP address and DNS server automatically.

Are you are sure you are connected to YOUR wireless network and not some
other access point?

David

David wrote:
>
> "Duane Arnold" <"Do forget about it"@PleaeDo.BET> wrote in message
> news:c_ptg.7243$(E-Mail Removed) ink.net...
>
>> john22 wrote:
>>
>>> I have a laptop connected to internet through a wireless router. When I
>>> do ipconfig on the laptop it shows 192.168.0.3. However, the user list
>>> on the router web interface doesn't have this IP. Instead, the list
>>> shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
>>> correspond to other wired PCs on the same network. TCP/IP settings on
>>> the laptop obtain IP address and DNS server automatically.
>
>
> Are you are sure you are connected to YOUR wireless network and not some
> other access point?
>
> David
>
You got a point there.

Duane

I am connected to mine. I confirmed it by matching with the external IP
address.


David wrote:
> "Duane Arnold" <"Do forget about it"@PleaeDo.BET> wrote in message
> news:c_ptg.7243$(E-Mail Removed) ink.net...
> > john22 wrote:
> >> I have a laptop connected to internet through a wireless router. When I
> >> do ipconfig on the laptop it shows 192.168.0.3. However, the user list
> >> on the router web interface doesn't have this IP. Instead, the list
> >> shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
> >> correspond to other wired PCs on the same network. TCP/IP settings on
> >> the laptop obtain IP address and DNS server automatically.
>
> Are you are sure you are connected to YOUR wireless network and not some
> other access point?
>
> David

I am connected to mine. I confirmed it by matching with the external IP
address.


David wrote:
> "Duane Arnold" <"Do forget about it"@PleaeDo.BET> wrote in message
> news:c_ptg.7243$(E-Mail Removed) ink.net...
> > john22 wrote:
> >> I have a laptop connected to internet through a wireless router. When I
> >> do ipconfig on the laptop it shows 192.168.0.3. However, the user list
> >> on the router web interface doesn't have this IP. Instead, the list
> >> shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
> >> correspond to other wired PCs on the same network. TCP/IP settings on
> >> the laptop obtain IP address and DNS server automatically.
>
> Are you are sure you are connected to YOUR wireless network and not some
> other access point?
>
> David

Thank you for your resonse!

1) When I wired the laptop and still used DHCP, I could get my ftp
server to work. Although, I understand with dynamic IP this should stop
working as soon as the IP changes since all forwarding rules will no
longer hold. However, it should work atleast for one session. Moreover,
the laptop seems to get the same dynamic IP address everytime.i.e.
192.168.0.3.

2) When I do run->cmd->arp -a the table shows the following (if that
is relevant here):

Interface: 192.168.0.3 --- 0x2
Internet Address Physical Address Type
192.168.1.1 00-03-47-b1-99-3d dynamic
The user list on router's web interface shows 192.168.1.1 as one of the
IPs.

3)Without changing router settings, when I setup TCP/IP properties on
the laptop to use static IP (like 192.168.1.6 or sth) and DNS the
internet stops working. But if I setup the IP to 192.168.0.3 the static
addressing works and so does the internet. How do I setup the router
for static addressing? Is it possible to use static addressing for the
laptop and dynamic addressing for other computers at the same time?

Thanks for any help!

John22



Duane Arnold wrote:
> john22 wrote:
> > I have a laptop connected to internet through a wireless router. When I
> > do ipconfig on the laptop it shows 192.168.0.3. However, the user list
> > on the router web interface doesn't have this IP. Instead, the list
> > shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
> > correspond to other wired PCs on the same network. TCP/IP settings on
> > the laptop obtain IP address and DNS server automatically.
> >
> > Basically, I am trying to setup a ftp server on my wireless laptop at
> > home but to be able to do that the router needs to see this laptop
> > correctly after which I can forward ports 20-21 to the laptop's IP.
>
> You should be using a static IP on the router and not a DHCP IP from the
> router when doing the above, because if those ports are forwarded to a
> machine using a DHCP IP, the IP might change and the forwarding rules
> will not work any more.
> >
> > This works perfectly if I "wire" the laptop to the router. The laptop
> > gets 192.168.1.4 and the router's user list show the same IP as well.
> > So it all makes perfect sense when the laptop is wired. I am not sure
> > how to get this to work for wireless connection. I have been fiddling
> > with this for a few days now, any pointers will be greatly appreciated.
> >
>
> Configure the wireless NIC to use a static IP on the router.
>
> Duane

john22 <(E-Mail Removed)> wrote:
>
> Interface: 192.168.0.3 --- 0x2
> Internet Address Physical Address Type
> 192.168.1.1 00-03-47-b1-99-3d dynamic
> The user list on router's web interface shows 192.168.1.1 as one of the
> IPs.

Could you post the result of "ipconfig /all"?

>
> 3)Without changing router settings, when I setup TCP/IP properties on
> the laptop to use static IP (like 192.168.1.6 or sth) and DNS the
> internet stops working. But if I setup the IP to 192.168.0.3 the static
> addressing works and so does the internet. How do I setup the router
> for static addressing?

DHCP knows about 'manual DHCP', registering a mac address to use a
'fixed' IP address. Of course, you always could assign an IP address
on your laptop outside the DHCP pool.

Could it be that your router has all wired PCs on a different LAN
than the wireless ones? Maybe VLAN tagging?

> Is it possible to use static addressing for the
> laptop and dynamic addressing for other computers at the same time?

Yes, it is.

Peter

--
http://www.boosten.org

Mail: peter at boosten dot org

In article <(E-Mail Removed) .com>, "john22" <(E-Mail Removed)> wrote:
>Thank you for your resonse!
>
>1) When I wired the laptop and still used DHCP, I could get my ftp
>server to work. Although, I understand with dynamic IP this should stop
>working as soon as the IP changes since all forwarding rules will no
>longer hold. However, it should work atleast for one session. Moreover,
>the laptop seems to get the same dynamic IP address everytime.i.e.
>192.168.0.3.
>
>2) When I do run->cmd->arp -a the table shows the following (if that
>is relevant here):
>
>Interface: 192.168.0.3 --- 0x2
> Internet Address Physical Address Type
> 192.168.1.1 00-03-47-b1-99-3d dynamic
>The user list on router's web interface shows 192.168.1.1 as one of the
>IPs.
>
>3)Without changing router settings, when I setup TCP/IP properties on
>the laptop to use static IP (like 192.168.1.6 or sth) and DNS the
>internet stops working. But if I setup the IP to 192.168.0.3 the static
>addressing works and so does the internet. How do I setup the router
>for static addressing? Is it possible to use static addressing for the
>laptop and dynamic addressing for other computers at the same time?
>
>Thanks for any help!

What brand of Wireless Router are you using, DLink? (model and firmware
also if you could). Just for reference sake. Also when you Open Avaialbe
Wirelss networks, do any others besides yours show up?

>
>John22
>
>
>
>Duane Arnold wrote:
>> john22 wrote:
>> > I have a laptop connected to internet through a wireless router. When I
>> > do ipconfig on the laptop it shows 192.168.0.3. However, the user list
>> > on the router web interface doesn't have this IP. Instead, the list
>> > shows 192.168.1.1, 192.168.1.2 and 192.168.1.3. Some of these IPs
>> > correspond to other wired PCs on the same network. TCP/IP settings on
>> > the laptop obtain IP address and DNS server automatically.
>> >
>> > Basically, I am trying to setup a ftp server on my wireless laptop at
>> > home but to be able to do that the router needs to see this laptop
>> > correctly after which I can forward ports 20-21 to the laptop's IP.
>>
>> You should be using a static IP on the router and not a DHCP IP from the
>> router when doing the above, because if those ports are forwarded to a
>> machine using a DHCP IP, the IP might change and the forwarding rules
>> will not work any more.
>> >
>> > This works perfectly if I "wire" the laptop to the router. The laptop
>> > gets 192.168.1.4 and the router's user list show the same IP as well.
>> > So it all makes perfect sense when the laptop is wired. I am not sure
>> > how to get this to work for wireless connection. I have been fiddling
>> > with this for a few days now, any pointers will be greatly appreciated.
>> >
>>
>> Configure the wireless NIC to use a static IP on the router.
>>
>> Duane
>

fundamentalism, fundamentally wrong.

john22 wrote:
> I am connected to mine. I confirmed it by matching with the external IP
> address.
>
>

What external IP? If the machine is using a DHCP IP on the router as you
claim, then the machine wireless NIC MAC would be linked to an IP in the
router's DHCP table, when you look at the table.

Duane