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Home > Archive > VPN > December 2004 > VPN between ISDN and ADSL
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VPN between ISDN and ADSL
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| Iiro Arvola 2004-11-14, 5:47 pm |
| Hello!
Can i have some help? I need some advisory/opinions concerning my
efforts on establishing a VPN connection.
Here´s the scenario: Server is a WinXpPro sp2 which has a
ADSL-connection. Client is a WinXpHome sp2 with ISDN-connection. I
dont have any specific VPN client/server softaware. Is there a
possibility of a conflict because these differences between connection
types?
In a matter of fact, the client can make the connection itself. Server
sees the client, but client won´t see the shared folders of the
server. I used the "Search" in Windows Explorer to seek for computers,
with the servers computer name. Also, no VPN-server seen at "network
neighbourhood".
Plain nothing...  I also shutted down firewalls at both ends but it
did not help. So why won´t the client see the server?
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| Mike Schumann 2004-11-14, 8:45 pm |
| Can you ping from one VPN to the other? With the newer versions of Windows,
most of the time you only get a TCP/IP connection, and traditional browsing
doesn't work. If you can ping, try running \\RemoteComputerName and you
should see all of the shared resources on the remote computer.
If you can't ping, then your tunnel is not working. What kind of routers
are in between the two computers? If you have a router rather than a simple
cable or adsl modem, you need to set up the DMZ so that all incoming traffic
gets forwarded to your PC.
Mike Schumann
"Iiro Arvola" <hat.vorrang@gmail.com> wrote in message
news:4a1aa49f.0411141113.ffcd0b@posting.google.com...
> Hello!
> Can i have some help? I need some advisory/opinions concerning my
> efforts on establishing a VPN connection.
> Here´s the scenario: Server is a WinXpPro sp2 which has a
> ADSL-connection. Client is a WinXpHome sp2 with ISDN-connection. I
> dont have any specific VPN client/server softaware. Is there a
> possibility of a conflict because these differences between connection
> types?
> In a matter of fact, the client can make the connection itself. Server
> sees the client, but client won´t see the shared folders of the
> server. I used the "Search" in Windows Explorer to seek for computers,
> with the servers computer name. Also, no VPN-server seen at "network
> neighbourhood".
> Plain nothing... I also shutted down firewalls at both ends but it
> did not help. So why won´t the client see the server?
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| Iiro Arvola 2004-11-15, 8:45 pm |
| "Mike Schumann" <mike-nospam@traditions-nospam.com> wrote in message news:<hcVld.11311$_J2.9790@newsread2.news.atl.earthlink.net>...
> Can you ping from one VPN to the other? With the newer versions of Windows,
> most of the time you only get a TCP/IP connection, and traditional browsing
> doesn't work. If you can ping, try running \\RemoteComputerName and you
> should see all of the shared resources on the remote computer.
>
> If you can't ping, then your tunnel is not working. What kind of routers
> are in between the two computers? If you have a router rather than a simple
> cable or adsl modem, you need to set up the DMZ so that all incoming traffic
> gets forwarded to your PC.
>
> Mike Schumann
Hello Mr. Schumann, and thanks for replying!
Devices between these machines go like this: The server is connected
to a ADSL-modem (Telewell EA-500) which has a four port switch, a
router and a firewall. It can be also set up to a bridging mode
instead of routed by altering the firmware but then the firewall is
not applicable.
DMZ has been set up and it is pointing to the server´s LAN ip.
About the virtual server port forwarding i´m not quite shure... I´ve
got ports 1723 tcp and udp both forwarded, also 500 tcp/udp, 50
tcp/udp, and 51 tcp/udp. Next to Telewell comes my ISP and their gear.
At the other end, about 20 km from here is an wall mounted ISDN
"interface box", and the client machine.
After setting up the VPN connection, the client can´t ping the server
(operation timed out). Server is able to ping the client. Gotta double
check those port forwarding settings... By the way, should the server
see the clients shared folder for example?
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| Mike Schumann 2004-11-15, 8:45 pm |
| Nothing will work until you are able to ping in both directions. I am
assuming at the ISDN end the computer is directly attached to the internet,
so pinging this address works because you are just going thru the net, not
thru a VPN connection.
At the server end, if your DSL router is configured as a router (which must
be the case if you have a 4 port switch), the internet address assigned by
your ISP is the address of the router, not your server. The router needs to
forward all traffic to your server (that's what the DMZ setting does).
If you use the default VPN settings on the server, the server will assign an
IP address to the remote computer for the VPN link. This is the address you
need to be able to ping from the server. In addition, on the remote
computer, you need to be able to ping the internal LAN address of the
server. At both ends you should be able to see all the IP addresses that
are assigned by executing "ipconfig /all".
Good luck,
Mike Schumann
"Iiro Arvola" <hat.vorrang@gmail.com> wrote in message
news:4a1aa49f.0411151023.5f714839@posting.google.com...
> "Mike Schumann" <mike-nospam@traditions-nospam.com> wrote in message
> news:<hcVld.11311$_J2.9790@newsread2.news.atl.earthlink.net>...
>
> Hello Mr. Schumann, and thanks for replying!
> Devices between these machines go like this: The server is connected
> to a ADSL-modem (Telewell EA-500) which has a four port switch, a
> router and a firewall. It can be also set up to a bridging mode
> instead of routed by altering the firmware but then the firewall is
> not applicable.
> DMZ has been set up and it is pointing to the server´s LAN ip.
> About the virtual server port forwarding i´m not quite shure... I´ve
> got ports 1723 tcp and udp both forwarded, also 500 tcp/udp, 50
> tcp/udp, and 51 tcp/udp. Next to Telewell comes my ISP and their gear.
> At the other end, about 20 km from here is an wall mounted ISDN
> "interface box", and the client machine.
>
> After setting up the VPN connection, the client can´t ping the server
> (operation timed out). Server is able to ping the client. Gotta double
> check those port forwarding settings... By the way, should the server
> see the clients shared folder for example?
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| Peter Brühlmann 2004-12-19, 7:45 am |
| Hi friends
I have a similar problem posted today and would appreciate your help! I
wrote to Mike directyl too!
Kind regards
Peter
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| Peter Brühlmann 2004-12-19, 7:45 am |
| Hi friends
I have a similar problem posted today and would appreciate your help! I
wrote to Mike directyl too!
Kind regards
Peter
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