ICS problem on a peer to peer network


G

Guest

Hello,

I need help with configuring internet connection sharing on two computers.

Currently, i have one computer (PC A) and it is connected to the internet
using a asdl model. PC A is connected to the modem using USB connection. I
have another computer (PC B) and it is connected to PC A using Ethernet
(cross-over), but it doesn't have internet connection. How do I configure the
modem, PC A and PC B so that PC B has internet connection as well?

Extra Notes:
* I can view the shared files on both computers
* PC A is win2000 and PC B is windows XP.
* Both PCs can pint each other Ie. PC A can ping PC B and the vise versa
* PC A's ipconfig results:
ADSL modem:
DHCP Enabled - Yes
Autoconfiguration Enabled - Yes
IP Address -10.1.1.3
Subnet mask - 255.0.0.0
Default Gateway - 10.1.1.1
DHCP Server - 10.1.1.1
DNS Servers - 10.1.1.1
LAN:
DHCP Enabled - Yes
Autoconfiguration Enabled - Yes
Autoconfituration IP Address - 169.254.114.44
Subnet Mask - 255.255.0.0
Default Gateway - (empty)
DNS Servers - (empty)
* PC B's ipconfig results:
LAN:
DHCP Enabled - Yes
Autoconfiguration Enabled - Yes
Autoconfituration IP Address - 169.254.84.113
Subnet Mask - 255.255.0.0
Default Gateway - (empty)
* PC B cannot ping 10.1.1.3 or 10.1.1.1


Thanks
 
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S

Steve Winograd [MVP]

Rumi said:
Hello,

I need help with configuring internet connection sharing on two computers.

Currently, i have one computer (PC A) and it is connected to the internet
using a asdl model. PC A is connected to the modem using USB connection. I
have another computer (PC B) and it is connected to PC A using Ethernet
(cross-over), but it doesn't have internet connection. How do I configure the
modem, PC A and PC B so that PC B has internet connection as well?

Extra Notes:
* I can view the shared files on both computers
* PC A is win2000 and PC B is windows XP.
* Both PCs can pint each other Ie. PC A can ping PC B and the vise versa
* PC A's ipconfig results:
ADSL modem:
DHCP Enabled - Yes
Autoconfiguration Enabled - Yes
IP Address -10.1.1.3
Subnet mask - 255.0.0.0
Default Gateway - 10.1.1.1
DHCP Server - 10.1.1.1
DNS Servers - 10.1.1.1
LAN:
DHCP Enabled - Yes
Autoconfiguration Enabled - Yes
Autoconfituration IP Address - 169.254.114.44
Subnet Mask - 255.255.0.0
Default Gateway - (empty)
DNS Servers - (empty)
* PC B's ipconfig results:
LAN:
DHCP Enabled - Yes
Autoconfiguration Enabled - Yes
Autoconfituration IP Address - 169.254.84.113
Subnet Mask - 255.255.0.0
Default Gateway - (empty)
* PC B cannot ping 10.1.1.3 or 10.1.1.1


Thanks

I've written a web page with full details:

ICS for Win2000 - Broadband WAN Connection
http://www.practicallynetworked.com/sharing/ics/ics_win2k_install_bband.htm
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional - Windows Networking
http://mvp.support.microsoft.com

Steve Winograd's Networking FAQ
http://www.bcmaven.com/networking/faq.htm
 
G

Guest

Hi Steve,

Thank you for providing the link but after i configured the settings on PC A
(ie. set it so it allows internet sharing), PC A cannot connect to the
internet anymore. I found out that it automatically changed the settings for
the ADSL modem, while the LAN setting stays the same. The main change on ADSL
modem setting on PC A was the IP address to 192.168.0.1 and Subnet mask to
255.255.255.0. After this change, PC B cannot even detect PC A on the network
by browsing My Network Places even after i manually changed PC B's IP address.

Do you have any other suggestions? Thanks.
 
D

DanS

Hi Steve,

Thank you for providing the link but after i configured the settings
on PC A (ie. set it so it allows internet sharing), PC A cannot
connect to the internet anymore. I found out that it automatically
changed the settings for the ADSL modem, while the LAN setting stays
the same. The main change on ADSL modem setting on PC A was the IP
address to 192.168.0.1 and Subnet mask to 255.255.255.0. After this
change, PC B cannot even detect PC A on the network by browsing My
Network Places even after i manually changed PC B's IP address.

Do you have any other suggestions? Thanks.

Get a NAT router and dump ICS ?

IF, the ADSL modem has an ethernet port, instead of just USB, that REALLY
would be the way to go.

You didn't mention the usage for both of these PC's, but an external
hardware device would be better for several reasons....

1) PC1 does not need to be on when PC2 wants the Internet.

2) PC1 local usage (Programs) does not affect PC2's internet access, and
visa versa. (Unless of course PC1 is using up bandwidth.)

3) No LAN configuration nightmare. You can leave the config the way YOU
want it to be.

4) (I don't know about ICS security but...) A NAT router add's a certain
level of security to BOTH PC's versus being directly connected to the
Internet. This is inherent to using NAT, even if the router does not have
a 'built-in' Firewall feature listed on the box. (Not saying that a NAT
router alone should be your only security.)

5) A small home router will usually have a 4 port switch built into it,
which will allow you to connect your current 2 PC's PLUS 2 other devices
if need be in the future.

A non-wireless router can be had at many stores for $30-$40 dollars, even
less with the rebate junk. Same goes for wireless a router, sometimes
even cheaper, and most will allow you to turn off the wireless. (Wireless
is nice, but .......)


Regards,

DanS
 
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S

Steve Winograd [MVP]

Rumi said:
Hi Steve,

Thank you for providing the link but after i configured the settings on PC A
(ie. set it so it allows internet sharing), PC A cannot connect to the
internet anymore. I found out that it automatically changed the settings for
the ADSL modem, while the LAN setting stays the same. The main change on ADSL
modem setting on PC A was the IP address to 192.168.0.1 and Subnet mask to
255.255.255.0. After this change, PC B cannot even detect PC A on the network
by browsing My Network Places even after i manually changed PC B's IP address.

Do you have any other suggestions? Thanks.

You're welcome, Rumi. Enable ICS on the connection that accesses the
Internet. In your setup, that's the ADSL modem connection, not the
LAN connection.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional - Windows Networking
http://mvp.support.microsoft.com

Steve Winograd's Networking FAQ
http://www.bcmaven.com/networking/faq.htm
 

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