Internet and telnet not working simultaneously

[SURINDER K. ARORA]

Dear Sir,
I have windowsxp on pentium 4 with modem and networking card. I have a
problem that I can not access internet and telnet simultaneously. They
connect individually fine but when one is connected other does not get
connected.
kindly help.
regards
arora sk

 

[Ron Lowe]

Dear Sir,
I have windowsxp on pentium 4 with modem and networking card. I have a
problem that I can not access internet and telnet simultaneously. They
connect individually fine but when one is connected other does not get
connected.
kindly help.
regards
arora sk

You'd need to describe the configuration better.

Are you using the modem or LAN to connect to the Internet?
Whats the network layout the LAN card is connected to:
is it one local LAN, or is it a larger network connected by routers?

What are you trying to telnet to?
A machine on the LAN or the Internet or where?

Where on the LAN is it?
Across a router? or on the same local network as your machine?

I'm guessing that whats happening is that when you connect to the Internet,
the Default Route is being taken over to point to the ISP's gateway. That
needs to happen to let you access the Internet.

The problem is, it's over-riding the LANs default route.
This breaks routing to the machine you are trying to telnet to.

We can possibly fix it by messing with static routes.
But we'd need a detailed description of:

LAN Layout ( as queried above )
Your LAN IP address/ subnet mask;
IP address of machine you are attempting to telnet to;
Output or 'route print' in each case ( when telnet works, and when it
doesnt. )

 

[SURINDER K. ARORA]

"
Dear Sir,
I have tried to give details below as per your querries.
Regards
Arora SK
----- Original Message -----
From: "Ron Lowe" <ron.lowe@{DELETE}btopenworld.com>
Newsgroups: microsoft.public.windowsxp.network_web
Sent: Friday, March 12, 2004 4:19 PM
Subject: Re: Internet and telnet not working simultaneously

You'd need to describe the configuration better.

Are you using the modem or LAN to connect to the Internet?
Whats the network layout the LAN card is connected to:
is it one local LAN, or is it a larger network connected by routers?

Sir, I am using MODEM for internet.

What are you trying to telnet to?
A machine on the LAN or the Internet or where?

Telnet I am using to get connected to a server. Or I try to get connected

to intranet via MICN using realtalk network card

Where on the LAN is it?
Across a router? or on the same local network as your machine?

My machine is connected to MICN as stated above.

I'm guessing that whats happening is that when you connect to the Internet,
the Default Route is being taken over to point to the ISP's gateway. That
needs to happen to let you access the Internet.

The problem is, it's over-riding the LANs default route.
This breaks routing to the machine you are trying to telnet to.

We can possibly fix it by messing with static routes.
But we'd need a detailed description of:

IP Address 11.64.2.65

Subnet mask 255.255.0.0
Default gateway 11.64.200.1
Preferred DNS server 192.30.29.24
IP address of the machine which I wanyt to access is 11.60.2.21

 

[Ron Lowe]

I'm sorry, I don't know what MICN is.

But working from this:

IP Address 11.64.2.65
Subnet mask 255.255.0.0
Default gateway 11.64.200.1
Preferred DNS server 192.30.29.24
IP address of the machine which I wanyt to access is 11.60.2.21

try the following:

Go to a command prompt, and issue this command:

route -p add 11.60.0.0 mask 255.255.0.0 11.64.200.1

Then type 'route print'.
At the end of the route table, this should be there:

Persistent Routes:
Network Address Netmask Gateway Address Metric
11.60.0.0 255.255.0.0 11.64.200.1 1


This should force routing to all 11.60.x.x machines via the
router at 11.64.200.1, and not out to the Internet.

 

[Ron Lowe]

Telnet I am using to get connected to a server. Or I try to get
connected

to intranet via MICN using realtalk network card

Something has just occoured to me.
This MICN network you are connected to.......

Who owns it?
Do the administrators know you are trying to have
network copnnections and dial up at the same time?

If it's your employers network, then I'd not do what
I suggested untill you have checked with IT.

You may be in serious breach of security policies by doing this.
You are possibly about to create an unauthorised insecure route past their
firewall.

Now, so long as IP forwarding is not enabled, then you are
not in fact creating an unauthorised way in to the network.

But even so, corporate security types take a very dim view of these kind of
things.

So _please_ be sure you are not about to get in serious trouble before
proceeding.

 

[SURINDER K. ARORA GM EAST]

Dear Sir,
There is no security breach. I am at a pretty senior level in the
organistion with permission and passwords to use intranet and other servers
of the organisation. I will try the suggestion given by you in oyher e mail.
regards
arora SK

 

[SURINDER K. ARORA GM EAST]

Dear Sir,
There is no problem of this type. I am at a senior position in organisation
authorised with passwords to log on various intranets.
Regards
Arora SK

 

[SURINDER K. ARORA GM EAST]

Dear Sir,
Thank you very much for giving correct and ready to use solution for my
problem. I am able to access internet and telnet simultaneously.
Now I am optimistic to find solution of my second problem.
My organsation MTNL is having a MICN meaning MTNL integrated computer
Network Coonecting all the servers of delhi through routers. On this MICN
they have connected a server for MTNL INTRANET accessible with IE5 AND OE5
and above with IP address as 192.30.29.24 with name of site address as
www.mtnl.com. I am able to access this site when I am not connected to
intermet. I want to access internet and intranet simultaneously without
switching off internet and secondly I want to configure my OE in such a way
that new mails are watched evey minute on intranet while mails on internet
to be watched only when iternet is on. How to go ahead.
Regards
Arora SK

 

[Ron Lowe]

Dear Sir,
Thank you very much for giving correct and ready to use solution for my
problem. I am able to access internet and telnet simultaneously.
Now I am optimistic to find solution of my second problem.
My organsation MTNL is having a MICN meaning MTNL integrated computer
Network Coonecting all the servers of delhi through routers. On this MICN
they have connected a server for MTNL INTRANET accessible with IE5 AND OE5
and above with IP address as 192.30.29.24 with name of site address as
www.mtnl.com. I am able to access this site when I am not connected to
intermet. I want to access internet and intranet simultaneously without
switching off internet and secondly I want to configure my OE in such a way
that new mails are watched evey minute on intranet while mails on internet
to be watched only when iternet is on. How to go ahead.
Regards
Arora SK

Ah, now look see.
We created a route to the 11.60.x.x. addresses.
And that works.

But now you're telling me there's another address range in use on your
Intranet.
From your description, that's a fairly large network.
Alarm bells are ringing loudly.

This is in danger of getting out of hand.
You are going to come here asking for a new static route every time
you need to access a different machine on your LAN.
This is not a sensible way forward.

You would need to determine ALL the IP address ranges used within
the internal network, and route them all explicitly like I just did.

So I could just give you another 'route' command.

But hold on there.
You are describing a big lan configured with routers.
This didn't configure itself.
That was configured by administrators who understand routing etc.
You MUST talk to the administrators of this network.
Do _they_ know what you are trying to do?

On a network of that size, with multiple routed subnets, Internet access is
almost always available via the LAN to authorised people. The idea of
having individuals dialing up and directly exposing the network to the
Internet in an uncontrolled way is unthinkable. If your IT staff permit
that, it's time to ask some searching questions of them.

I simply can't believe that an administered network with multiple routed
subnets ( which you are not the administrator of ) is happy with you adding
static routes to their LAN on a machine which you are creating an ad-hoc
dial-up Internet connection.

I'm sorry, I'm going to have to back out here.
You should show your network administrators what you have done so far,
and ask their advice on how to route further internal subnets.

 

[SURINDER K. ARORA GM EAST]

Dear Sir,
Thank you very much for the reply.
I have been trying to get solution of the problem from the administrator and
I have passed on the problem to my collegue incharge of IT group in my
organisation for solution , who are working on it without success.
I think I have not been able to tell my problem correctly to you that is why
it is creating doubt in your mind.
I want to use my computer for three things simultaneously.
1. Internet via IE6 and OE6
2. My local servers working on unix accessible through telnet for which you
solved my problem successfully..
3. Our organisational Intranet connected on dedicated cable network
available to organisation only with IP address 192.30.29.24.This works on
IE5 OR OE5 and above.It is here only my problem troubling me. As you are
doubting there is no ethical or unauthorised using of the network.
To make my saying more logical and convincing I may remind you that every
network is protected by passwords and this network is not a public network
also.
I hope this will satisfy you and you will help me in finding the solution.
In case you want a request from me on my organisational lettehead asking for
help in a hardcopy (signed) I can send you a request by post provided you
give me your adress.
Regards
Arora Sk
General Manager East
MTNL