Hello,
I've set up in the office a VPN-Server based on Windows Server 2003 and this
server has only one network card configured for 10.0.x.x network with
255.255.0.0 subnet.
The default gateway for this machine is a cisco Firewall 10.0.0.101 that
supply internet broadband connection.
Internal DNS is 10.0.10.0
VPN Server has a pool of static IP addresses for the clients: from 10.0.51.1
to 10.0.51.50

From outside, there's a dedicated IP adress and all connection requests on
dedicated PPTP & L2TP ports are routed by the firewall at VPN Server.

So, if I try to make a VPN connection from a notebook with a dialup
connection all works perfectly: i can see all the LAN in which VPN server
is....but....If I try to connect from home i've no connection problem (i can
see my connection on server logs) but i can see nothing on office LAN

From home I've a ADSL connection and a D-Link DSL 504-Router with this
configuration

DHCP from 192.168.0.1 to 192.168.0.253
Subnet 255.255.255.0
Ethernet IP Address 192.168.0.254
Proxy DNS enabled
NAT enabled

---------------------------------------------------------

This is the ipconfig /all result from home


Configurazione IP di Windows

Host Name . . . . . . . . . . . . . . : xxxxxxxxxx
IP Routing enabled. . . . . . . . . : No
Proxy WINS enabled . . . . . . . .  : No

Home LAN:

Description . . . . . . . . . . . . . : SiS 900-Based PCI Fast
EthernetAdapter
DHCP enabled. . . . . . . . . . . . : No
IP address. . . . . . . . . . . . . : 192.168.0.1
Subnet mask . . . . . . . . . . . . . : 255.255.255.0
Gateway............ . . . . . . . . . : 192.168.0.254
DNS Server . . . . . . . . . . . . .  : 85.38.28.70

VPN:

Descrizione . . . . . . . . . . . . . : WAN (PPP/SLIP) Interface
DHCP enable. . . . . . . . . . . . : No
IP address. . . . . . . . . . . . . : 10.0.51.5
Subnet mask . . . . . . . . . . . . . : 255.255.255.255
Default gateway . . . . . . . . . : 10.0.51.5
DNS Server . . . . . . . . . . . . .  : 10.0.10.0
151.99.125.1
-------------------------------------------------------------------

Anyone can help me?

Thanks

Diego.

[ Post a follow-up to this message ]

Did you make sure that your router is allowing the proper protocols to pass
thru?

If it works on dial-up and not thru DSL, then it sounds like the router
config for your ADSL link is the problem.

You may also want to try and hook up your ADSL directly to your
laptop and use PPPOE software.  This will let you know if your ADSL
ISP allows VPN protocols to go over their network.

moncho

"Diego" <diegotune@supereva.it> wrote in message
news:440f3fcc$0$29734$4fafbaef@reader2.news.tin.it...
> Hello,
> I've set up in the office a VPN-Server based on Windows Server 2003 and
> this server has only one network card configured for 10.0.x.x network with
> 255.255.0.0 subnet.
> The default gateway for this machine is a cisco Firewall 10.0.0.101 that
> supply internet broadband connection.
> Internal DNS is 10.0.10.0
> VPN Server has a pool of static IP addresses for the clients: from
> 10.0.51.1 to 10.0.51.50
>
> From outside, there's a dedicated IP adress and all connection requests on
> dedicated PPTP & L2TP ports are routed by the firewall at VPN Server.
>
> So, if I try to make a VPN connection from a notebook with a dialup
> connection all works perfectly: i can see all the LAN in which VPN server
> is....but....If I try to connect from home i've no connection problem (i
> can see my connection on server logs) but i can see nothing on office LAN
>
> From home I've a ADSL connection and a D-Link DSL 504-Router with this
> configuration
>
> DHCP from 192.168.0.1 to 192.168.0.253
> Subnet 255.255.255.0
> Ethernet IP Address 192.168.0.254
> Proxy DNS enabled
> NAT enabled
>
> ---------------------------------------------------------
>
> This is the ipconfig /all result from home
>
>
> Configurazione IP di Windows
>
>        Host Name . . . . . . . . . . . . . . : xxxxxxxxxx
>        IP Routing enabled. . . . . . . . . : No
>        Proxy WINS enabled . . . . . . . .  : No
>
> Home LAN:
>
>        Description . . . . . . . . . . . . . : SiS 900-Based PCI Fast
> EthernetAdapter
>        DHCP enabled. . . . . . . . . . . . : No
>        IP address. . . . . . . . . . . . . : 192.168.0.1
>        Subnet mask . . . . . . . . . . . . . : 255.255.255.0
>        Gateway............ . . . . . . . . . : 192.168.0.254
>        DNS Server . . . . . . . . . . . . .  : 85.38.28.70
>
> VPN:
>
>        Descrizione . . . . . . . . . . . . . : WAN (PPP/SLIP) Interface
>        DHCP enable. . . . . . . . . . . . : No
>        IP address. . . . . . . . . . . . . : 10.0.51.5
>        Subnet mask . . . . . . . . . . . . . : 255.255.255.255
>        Default gateway . . . . . . . . . : 10.0.51.5
>        DNS Server . . . . . . . . . . . . .  : 10.0.10.0
>                                            151.99.125.1

[ Post a follow-up to this message ]

On Sat, 11 Mar 2006 11:41:10 GMT, "moncho"
<moncho990009@somehownowhere.net> wrote:

>You may also want to try and hook up your ADSL directly to your
>laptop and use PPPOE software.  This will let you know if your ADSL
>ISP allows VPN protocols to go over their network.


Can you expand on what you mean here a little? How do you check the
protocols?

cheers
-Rob

[ Post a follow-up to this message ]

"Rob" <robathomeDeleteMe@mail.com> wrote in message
 news:ver512thbsfm282gtmf07h303kvb2b5ilt@
4ax.com...
> On Sat, 11 Mar 2006 11:41:10 GMT, "moncho"
> <moncho990009@somehownowhere.net> wrote:
> 
>
>
> Can you expand on what you mean here a little? How do you check the
> protocols?
>
> cheers
> -Rob
Some DSL providers, although they are far and few between, do not allow
IPSec specific ports and so on.  You will need to check your usage agreement
with your DSL supplier.  If it is one of the big ILEC's, blocked ports on
the
vendor's network is not your problem.

What you want to do is get your router out of the way first to make sure it
is not the problem.

Did you make sure to allow VPN pass-thru on your router?

moncho

[ Post a follow-up to this message ]