VPN DNS Woes with a few hosts
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VPN DNS Woes with a few hosts

 
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Patrick
Guest
Posted: Fri Oct 28, 2005 4:51 pm    Post subject: VPN DNS Woes with a few hosts Reply with quote
Hello all,

I have vpn via pptp to our isa box. So far everything works beautifully but
some dns issues are preventing a ture happy ending. Here is the scenario:

A user vpn's from there laptop, home pc (etc.) to the external ip of our vpn
server. Connects fine. Is issued an ip address in a static pool defined on
the ISA box. The vpn user is handed out two internal dns server and two wins
servers as well.

I am able to ping every internal server by ip adress perfectly fine and each
internal hostname resolves to the proper IP except my mail server and web
server.

Both of these hosts have an external ip which is hosted by our isp and an
internal ip which is properly recorded on our internal dns servers. If i ping
either of these hosts by name while vpn'ed in it resolves there external ip.
So when I try to connect to my mail server it trys to resolve the name to its
external ip and does not connect.

If I ping the intenral ip's of the two hosts having the problems I get a
reply back but cannot resolve them by hostname?

Any idea what I am doing wrong? If any more info is needed, please let me
know.

Patrick
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Todd J Heron
Guest
Posted: Fri Oct 28, 2005 4:51 pm    Post subject: Re: VPN DNS Woes with a few hosts Reply with quote
Is the option "Use Default Gateway on remote network" enabled on the
client? To locate this setting on the client, go to Properties > TCP/IP
properties > Advanced > General. I think you need to enable this. When not
checked, the home PC will check the Internet DNS first to resolve the name.

--
Todd J Heron, MCSE
Windows Server 2003/2000/NT; CCA
----------------------------------------------------------------------------
This posting is provided "as is" with no warranties and confers no rights

"Patrick" <Patrick@discussions.microsoft.com> wrote in message
news:39F2EB12-99C8-4350-A076-1584DB7098DE@microsoft.com...
Hello all,

I have vpn via pptp to our isa box. So far everything works beautifully but
some dns issues are preventing a ture happy ending. Here is the scenario:

A user vpn's from there laptop, home pc (etc.) to the external ip of our vpn
server. Connects fine. Is issued an ip address in a static pool defined on
the ISA box. The vpn user is handed out two internal dns server and two wins
servers as well.

I am able to ping every internal server by ip adress perfectly fine and each
internal hostname resolves to the proper IP except my mail server and web
server.

Both of these hosts have an external ip which is hosted by our isp and an
internal ip which is properly recorded on our internal dns servers. If i
ping
either of these hosts by name while vpn'ed in it resolves there external ip.
So when I try to connect to my mail server it trys to resolve the name to
its
external ip and does not connect.

If I ping the intenral ip's of the two hosts having the problems I get a
reply back but cannot resolve them by hostname?

Any idea what I am doing wrong? If any more info is needed, please let me
know.

Patrick
Back to top
Patrick
Guest
Posted: Fri Oct 28, 2005 8:50 pm    Post subject: Re: VPN DNS Woes with a few hosts Reply with quote
Todd,

Thanks for the response. I did indeed check and it is checked. I tried both
ways and no luck.

one thing I did try was taking my wireless card and setting its dns settings
to the ip address of my internal dns server. Then initiated my connection and
everything worked. So for some reason it seems my nic interface is using the
external dns rather than internal evem when using vpn...this is happening for
all my users so I am so confused as to where the error may lie.

"Todd J Heron" wrote:

Quote:
Is the option "Use Default Gateway on remote network" enabled on the
client? To locate this setting on the client, go to Properties > TCP/IP
properties > Advanced > General. I think you need to enable this. When not
checked, the home PC will check the Internet DNS first to resolve the name.

--
Todd J Heron, MCSE
Windows Server 2003/2000/NT; CCA
----------------------------------------------------------------------------
This posting is provided "as is" with no warranties and confers no rights

"Patrick" <Patrick@discussions.microsoft.com> wrote in message
news:39F2EB12-99C8-4350-A076-1584DB7098DE@microsoft.com...
Hello all,

I have vpn via pptp to our isa box. So far everything works beautifully but
some dns issues are preventing a ture happy ending. Here is the scenario:

A user vpn's from there laptop, home pc (etc.) to the external ip of our vpn
server. Connects fine. Is issued an ip address in a static pool defined on
the ISA box. The vpn user is handed out two internal dns server and two wins
servers as well.

I am able to ping every internal server by ip adress perfectly fine and each
internal hostname resolves to the proper IP except my mail server and web
server.

Both of these hosts have an external ip which is hosted by our isp and an
internal ip which is properly recorded on our internal dns servers. If i
ping
either of these hosts by name while vpn'ed in it resolves there external ip.
So when I try to connect to my mail server it trys to resolve the name to
its
external ip and does not connect.

If I ping the intenral ip's of the two hosts having the problems I get a
reply back but cannot resolve them by hostname?

Any idea what I am doing wrong? If any more info is needed, please let me
know.

Patrick

Back to top
Todd J Heron
Guest
Posted: Sat Oct 29, 2005 12:50 am    Post subject: Re: VPN DNS Woes with a few hosts Reply with quote
Right-click My Network Places, select Properties, click Advanced, select
Advanced Settings. See if the local area NIC is at the top of the order, if
it is not, put it there.

"Patrick" <Patrick@discussions.microsoft.com> wrote in message
news:76B7A64E-5968-4340-893C-055C51E7098D@microsoft.com...
Todd,

Thanks for the response. I did indeed check and it is checked. I tried both
ways and no luck.

one thing I did try was taking my wireless card and setting its dns settings
to the ip address of my internal dns server. Then initiated my connection
and
everything worked. So for some reason it seems my nic interface is using the
external dns rather than internal evem when using vpn...this is happening
for
all my users so I am so confused as to where the error may lie.
Back to top
Patrick
Guest
Posted: Sun Oct 30, 2005 5:50 pm    Post subject: Re: VPN DNS Woes with a few hosts Reply with quote
Sounded like a great idea but it did not work either

"Todd J Heron" wrote:

Quote:
Right-click My Network Places, select Properties, click Advanced, select
Advanced Settings. See if the local area NIC is at the top of the order, if
it is not, put it there.

"Patrick" <Patrick@discussions.microsoft.com> wrote in message
news:76B7A64E-5968-4340-893C-055C51E7098D@microsoft.com...
Todd,

Thanks for the response. I did indeed check and it is checked. I tried both
ways and no luck.

one thing I did try was taking my wireless card and setting its dns settings
to the ip address of my internal dns server. Then initiated my connection
and
everything worked. So for some reason it seems my nic interface is using the
external dns rather than internal evem when using vpn...this is happening
for
all my users so I am so confused as to where the error may lie.

Back to top
 
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