IP Addresses

[Guest]

Hi -
Permit me to show my ignorance - I am working on a Win2k server with 5 XP home/XP Professional clients and 3 Win 98 users. The server is connected to a Linksys Hub which is then connected to a network hub. The linksys IP (internal) address is 192.168.1.1. The client machines have IP addresses starting from 192.168.1.100. The server, however, had an IP address of 216.44.150.xxx. I could not ping the server either by name or by IP from any of the client machines, yet somehow they are mapped to the server. I assume there is a bat file somewhere. How do I find this out?
Thank you for any help.
Rich

 

[David Robbins]

Hi -
Permit me to show my ignorance - I am working on a Win2k server with 5 XP

home/XP Professional clients and 3 Win 98 users. The server is connected to
a Linksys Hub which is then connected to a network hub. The linksys IP
(internal) address is 192.168.1.1. The client machines have IP addresses
starting from 192.168.1.100. The server, however, had an IP address of
216.44.150.xxx. I could not ping the server either by name or by IP from
any of the client machines, yet somehow they are mapped to the server. I
assume there is a bat file somewhere. How do I find this out?

Thank you for any help.
Rich

ask the administrator who set it up.

pings can be blocked so they are not always a reliable test. with your
client machines having non-routable ip addresses there must be a router
somewhere that is doing NAT and handling the routing from those machines to
the server and the rest of the world. so one or maybe both of those boxes
you are calling 'hubs' may be a router. how the machines are 'mapped' to
the server will depend on a bunch of things that the admin should be able to
explain.

 

[Guest]

Hi David -

Thanks for getting back to me. The problem is the admin who set up the machine moved to Isreal and we are not able to reach him. Can you suggest a place to start my search?

Thanks again,
Rich

----- David Robbins wrote: -----

Hi -
Permit me to show my ignorance - I am working on a Win2k server with 5 XP

home/XP Professional clients and 3 Win 98 users. The server is connected to
a Linksys Hub which is then connected to a network hub. The linksys IP
(internal) address is 192.168.1.1. The client machines have IP addresses
starting from 192.168.1.100. The server, however, had an IP address of
216.44.150.xxx. I could not ping the server either by name or by IP from
any of the client machines, yet somehow they are mapped to the server. I
assume there is a bat file somewhere. How do I find this out?

Thank you for any help.
Rich

ask the administrator who set it up.

pings can be blocked so they are not always a reliable test. with your
client machines having non-routable ip addresses there must be a router
somewhere that is doing NAT and handling the routing from those machines to
the server and the rest of the world. so one or maybe both of those boxes
you are calling 'hubs' may be a router. how the machines are 'mapped' to
the server will depend on a bunch of things that the admin should be able to
explain.

 

[David Robbins]

try the following, but will be a research project to figure out setup from
scratch, and if you are not familiar with routers and network setup it could
be tough.

take a good look at the 'hubs' and see if they are really routers. look for
setup software for them or maybe use web browser to access the router setup
that way. some older routers had to be set up by telnet so try that also.

try tracert from the clients to the server, see if that shows where the
router is.

try tracert from the server to the clients and to someplace on the internet
to see where the routers are that way.

if the server is visible from the internet as a webserver or mail server it
may be in what is called a DMZ which is kind of an isolated part of a
network to prevent spread of worms and stuff back to the internal network.
this could make the setup harder to figure out unless you can get into the
router to see the specifics.

maybe looking at winipcfg (on 98 machines) or ipconfig/all (on nt/w2k/xp
machines) would help locate dns servers and gateway addresses. the gateway
address is probably the router, try using web browser or telnet to connect
to it to see it's configuration.

if you do find a way into the router don't change anything unless you really
understand what it is or you may lose everything.

other options:
pray that the admin wrote down the setup somewhere.
hire a temp from a local computer service company to come in and sort it
out.

Hi David -

Thanks for getting back to me. The problem is the admin who set up the

machine moved to Isreal and we are not able to reach him. Can you suggest a
place to start my search?

 

[Guest]

Hi David,

Wow - Thanks for the leads - I am not at the client's today, but have checked the following (I made notes yesterday)
the Linksys router (BEFSR41) does provide the DHCP (192.168.1.1) - the router goes into a hub. The internal Server IP address (216.44.150.213) is not accessable from the outside (checked the status tab which showes an external IP different from the server internal ip address). The external IP (provided by Verizon) responds to a ping from the command prompt from my office but does not have a web port open. The firm does not use e-mail (except for hotmail). I did check the DMZ and it was not set (at least in the router). I did do the winipcfg/ipconfig/all from the 98 and XP addresses. They all had 192.168.1.10x - 255.255.255.0 - 192.168.1.1 on up. They all pointed to 192.168.1.1 as their DNS's. The server was setup static with IP (216.44.150.213) but interestingly enough the DNS's did not point to the Verizon's DNS'.
As a temporary fix I changed the Server's IP to 192.168.1.10 and the DNS's to the Verizon's DNS' ip. The problem started because I purchased 2 new machines for them and could not connect them to the server. I suspect there is a logon script which actually does the logical connection to the server. If that is true, how would I check for the script?
Thanks for all of your help.
Rich

----- David Robbins wrote: -----

try the following, but will be a research project to figure out setup from
scratch, and if you are not familiar with routers and network setup it could
be tough.

take a good look at the 'hubs' and see if they are really routers. look for
setup software for them or maybe use web browser to access the router setup
that way. some older routers had to be set up by telnet so try that also.

try tracert from the clients to the server, see if that shows where the
router is.

try tracert from the server to the clients and to someplace on the internet
to see where the routers are that way.

if the server is visible from the internet as a webserver or mail server it
may be in what is called a DMZ which is kind of an isolated part of a
network to prevent spread of worms and stuff back to the internal network.
this could make the setup harder to figure out unless you can get into the
router to see the specifics.

maybe looking at winipcfg (on 98 machines) or ipconfig/all (on nt/w2k/xp
machines) would help locate dns servers and gateway addresses. the gateway
address is probably the router, try using web browser or telnet to connect
to it to see it's configuration.

if you do find a way into the router don't change anything unless you really
understand what it is or you may lose everything.

other options:
pray that the admin wrote down the setup somewhere.
hire a temp from a local computer service company to come in and sort it
out.

Hi David -

machine moved to Isreal and we are not able to reach him. Can you suggest a
place to start my search?

 

[David Robbins]

it might be set up in their hosts file. look in
windows\system32\drivers\etc\hosts or lmhosts.sam files to see if the server
name is mapped to the ip address you found. there are ways to run scripts
at system startup and also at user logon. i have never had to set those up
so i'm not really sure where you would find them.

i would guess that the server may have been set up for a different isp
originally. that ip address comes back to a company called verio.

what you have setup now probably makes more sense as long as all the
machines can still access the server.

Hi David,

Wow - Thanks for the leads - I am not at the client's today, but have

checked the following (I made notes yesterday)

the Linksys router (BEFSR41) does provide the DHCP (192.168.1.1) - the

router goes into a hub. The internal Server IP address (216.44.150.213) is
not accessable from the outside (checked the status tab which showes an
external IP different from the server internal ip address). The external IP
(provided by Verizon) responds to a ping from the command prompt from my
office but does not have a web port open. The firm does not use e-mail
(except for hotmail). I did check the DMZ and it was not set (at least in
the router). I did do the winipcfg/ipconfig/all from the 98 and XP
addresses. They all had 192.168.1.10x - 255.255.255.0 - 192.168.1.1 on up.
They all pointed to 192.168.1.1 as their DNS's. The server was setup static
with IP (216.44.150.213) but interestingly enough the DNS's did not point to
the Verizon's DNS'.

As a temporary fix I changed the Server's IP to 192.168.1.10 and the DNS's

to the Verizon's DNS' ip. The problem started because I purchased 2 new
machines for them and could not connect them to the server. I suspect there
is a logon script which actually does the logical connection to the server.
If that is true, how would I check for the script?

 

[Guest]

Thanks David

I was going to check the host files but thought that if it was set I would be able to ping. Again - thanks for your your help

I feel much better

Thank
Ric


----- David Robbins wrote: ----

it might be set up in their hosts file. look i
windows\system32\drivers\etc\hosts or lmhosts.sam files to see if the serve
name is mapped to the ip address you found. there are ways to run script
at system startup and also at user logon. i have never had to set those u
so i'm not really sure where you would find them

i would guess that the server may have been set up for a different is
originally. that ip address comes back to a company called verio

what you have setup now probably makes more sense as long as all th
machines can still access the server

Hi David

checked the following (I made notes yesterday

the Linksys router (BEFSR41) does provide the DHCP (192.168.1.1) - th

router goes into a hub. The internal Server IP address (216.44.150.213) i
not accessable from the outside (checked the status tab which showes a
external IP different from the server internal ip address). The external I
(provided by Verizon) responds to a ping from the command prompt from m
office but does not have a web port open. The firm does not use e-mai
(except for hotmail). I did check the DMZ and it was not set (at least i
the router). I did do the winipcfg/ipconfig/all from the 98 and X
addresses. They all had 192.168.1.10x - 255.255.255.0 - 192.168.1.1 on up
They all pointed to 192.168.1.1 as their DNS's. The server was setup stati
with IP (216.44.150.213) but interestingly enough the DNS's did not point t
the Verizon's DNS'

As a temporary fix I changed the Server's IP to 192.168.1.10 and the DNS'

to the Verizon's DNS' ip. The problem started because I purchased 2 ne
machines for them and could not connect them to the server. I suspect ther
is a logon script which actually does the logical connection to the server
If that is true, how would I check for the script