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2 Laptops connected ad hoc.. client limited to university sites

By wayne461
Apr 30, 2007
  1. Summary of what I want:
    Home network with internet connectivity for 2 computers
    Host laptop computer connected directly to Comcast and use wireless cards in both laptops to set up an ad-hoc network where use Internet Connection Sharing to share internet to second laptop. Basically so both computers can be on the internet until we buy a wireless router eventually, or in the future when I want host computer still hard-wired for faster connection.

    Situation I have:
    Summary: Can only see internt sites affiliated with university where sometimes client computer is used.
    Details:
    Host: XP PC connected by ethernet wire to Comcast cable internet and everything works on the host computer as far as internet still
    Client: connects to host via the wireless cards on ad-hoc network and it can only go to internet sites associated with a large university system where my wife (owner of client laptop) works and where the client computer will continue to be used occaisionally via ethernet cable to their network. It is not cached pages because my wife is able to check university e-mail from home on the client computer. And as this is a large university system, it still works from multiple campus sites in multiple cities far away. But things like google or yahoo time out. It happens in both IE and Firefox. I have looked for proxy settings in both browsers on the laptop and see nothing.


    I have tried with both client and host firewalls off and with host one only on.

    My wife said that it did take her dealing with University IT people to get her laptop to work at the university but she does not recall any of settings they had her tweak to get it work. Their building is not wireless yet so it has to be ethernet cable.

    Question:
    Clearly the as-hoc connection works and the something is able to get through because all the university internet sites work but where should I look to find something limiting it to universtiy sites?
    When I get back on the ad-hoc network at home I plan to verify the client can ping the university sites it accesses but I assume that is obvious it can.
    Clearly the problem has nothing to do with Comcast because I would imagine client would be limited to Comcast stuff if that was the case. And host computer works just fine all over internet.
    I also assume once I found the limiting factor I would be able to tell wife how to change settings back so she can use laptop at the university as well.
    It just seems like I am so close to having internet access on client computer if it works on University-affiliated sites at home?
     
  2. raybay

    raybay TS Evangelist Posts: 7,241   +9

    Sorry, but your explanation leaves things unclear to me.
    It appears you are just not setup properly at home, but are at work...
    You have two laptops at home connected to one ComCast cable modem?
    Tell us a bit more of what equipment you have, and detail with words instead of ad-hoc, as-hoc, it, client computer, host computer, network at home, etc. including a re-statement of the problem.
     
  3. wayne461

    wayne461 TS Rookie Topic Starter

    Further explanation...

    I'd be glad to help further explain Raybay because it is so frustratingly close to working that it has me nealry pulling out my hair....

    The problem is that at home I have a computer (secondary) that is connecting wirelessly to another computer (primary) that is hardwired via ethernet to a Comcast cable modem. The primary hardwired host computer is able to see all the internet. The secondary computer connecting wirelessy to the primary hardwired computer can only see internet sites associated with the university where the computer sometimes is also used by my wife.

    At home is the problem. It just happens that the computer I am trying to get to use the internet sharing connection wirelessly (so it isn't hardwired to my comcast modem) is sometimes used at the university which is affiliated with the sites it can access at home, such as university e-mail, the library, other campuses in the system, etc...

    I should have also pointed out that until I get it working I have left the wireless security off for now.

    Question:
    What should I look into on the secondary computer to determine why it is limited to certain sites?

    I was just pointing out that I have no idea what was done to the computer by my wife as directed by the university information technology (IT) support people to get it to work at the university so I cannot figure out why this set-up would almost work to let me surf the internet on both computers.
     
  4. wayne461

    wayne461 TS Rookie Topic Starter

    Update...in case the extra info helps but still curious

    I was just able to switch which one was hardwired to Comcast and now I have internet working fine on both computers. So since it works fine the other way, I really think it has to do with some setting she tweaked to get it to work at the University.

    However, I would still like to figure out how to make it work the other way around (with my wife's problem computer contacting mine) as my wife tends to use her computer more mobilely than I do. It would be best to be able to use hers wirelessly. I imagine others might also have this issue come up so it would be nice to figure it out for others too.

    I appreciate the help.
     
  5. wayne461

    wayne461 TS Rookie Topic Starter

    example ipconfig and pings using problem computer

    I verified that DNS is set all automatic.

    Here is the IPCONFIG and example pings using the problem computer. You will see the ping to the university works while the ping to yahoo does not:
    Windows IP Configuration


    Ethernet adapter Wireless Network Connection 2:

    Connection-specific DNS Suffix . : mshome.net
    IP Address. . . . . . . . . . . . : 192.168.0.55
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.0.1

    Ethernet adapter LAN Work:

    Media State . . . . . . . . . . . : Media disconnected

    C:\Documents and Settings\Wayne.TINA>ping www.umass.edu

    Pinging www.umass.edu [128.119.101.5] with 32 bytes of data:

    Reply from 128.119.101.5: bytes=32 time=16ms TTL=114
    Reply from 128.119.101.5: bytes=32 time=16ms TTL=114
    Reply from 128.119.101.5: bytes=32 time=17ms TTL=114
    Reply from 128.119.101.5: bytes=32 time=20ms TTL=114

    Ping statistics for 128.119.101.5:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 16ms, Maximum = 20ms, Average = 17ms

    C:\Documents and Settings\Wayne.TINA>ping www.yahoo.com

    Pinging www.yahoo-ht3.akadns.net [69.147.114.210] with 32 bytes of data:

    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.

    Ping statistics for 69.147.114.210:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
     
  6. wayne461

    wayne461 TS Rookie Topic Starter

    Ipconfig /all And Update

    The IPCONFIG /ALL is below. UPDATE is now I cannot even connect to the university sites in the browsers using my wife's computer wirelessly. If I use my wife's computer hardwired to Comcast and my computer as wireless everything works using the same ad-hoc network?! The wireless cards must be working or it wouldn't work the other way??

    C:\Documents and Settings\Wayne.TINA>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : tina
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Mixed
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : mshome.net

    Ethernet adapter Wireless Network Connection 2:

    Connection-specific DNS Suffix . : mshome.net
    Description . . . . . . . . . . . : Intel(R) PRO/Wireless LAN 2100 3A Mi
    ni PCI Adapter
    Physical Address. . . . . . . . . : 00-0C-F1-5C-09-7C
    Dhcp Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IP Address. . . . . . . . . . . . : 192.168.0.248
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    Lease Obtained. . . . . . . . . . : Tuesday, May 01, 2007 11:53:10 PM
    Lease Expires . . . . . . . . . . : Tuesday, May 08, 2007 11:53:10 PM

    Ethernet adapter LAN Work:

    Media State . . . . . . . . . . . : Media disconnected
    Description . . . . . . . . . . . : Broadcom 440x 10/100 Integrated Cont
    roller
    Physical Address. . . . . . . . . : 00-11-43-6A-99-E7

    C:\Documents and Settings\Wayne.TINA>ping www.yahoo.com

    Pinging www.yahoo-ht3.akadns.net [69.147.114.210] with 32 bytes of data:

    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.

    Ping statistics for 69.147.114.210:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

    C:\Documents and Settings\Wayne.TINA>ping www.umass.edu

    Pinging www.umass.edu [128.119.101.5] with 32 bytes of data:

    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.

    Ping statistics for 128.119.101.5:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

    C:\Documents and Settings\Wayne.TINA>ping www.yahoo.com

    Pinging www.yahoo-ht3.akadns.net [69.147.114.210] with 32 bytes of data:

    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.

    Ping statistics for 69.147.114.210:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
     
  7. wayne461

    wayne461 TS Rookie Topic Starter

    Back with more info

    Still problems on this home network of mine...
    I uninstalled all virus stuff on both computers and sppybt-S&D off the one prblem computer (which was the only one that had it). I removed the Comcast Desktop Doctor software off the computer which is the ICS source. All firewalls are off. Even before I did this tonight I had universite sites still working and pinging. Interestingly, at first I couldn't ping the gateway (192.168.0.1) from the problem computer but after removing all the stuff and rebooting I could. Also interestingly I still can only get to the universtiy sites on the problem computer in any browser. In Firefox the myyahoo.page starts to come up with text alone. The university pages fly open after the first one. These are non-cached as university mail can be checked from both home computers.

    I have no idea why the internet won't work on the problem computer, aside from a few sites at the nearby university????

    Here is the most recent Ipconfig /all and some pings using the problem computer:

    C:\Documents and Settings\Wayne.TINA>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : tina
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Mixed
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : mshome.net

    Ethernet adapter Wireless Network Connection 2:

    Connection-specific DNS Suffix . : mshome.net
    Description . . . . . . . . . . . : Intel(R) PRO/Wireless LAN 2100 3A Mi
    ni PCI Adapter
    Physical Address. . . . . . . . . : 00-0C-F1-5C-09-7C
    Dhcp Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IP Address. . . . . . . . . . . . : 192.168.0.186
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    Lease Obtained. . . . . . . . . . : Thursday, May 03, 2007 3:15:38 AM
    Lease Expires . . . . . . . . . . : Thursday, May 10, 2007 3:15:38 AM

    Ethernet adapter LAN Work:

    Media State . . . . . . . . . . . : Media disconnected
    Description . . . . . . . . . . . : Broadcom 440x 10/100 Integrated Cont
    roller
    Physical Address. . . . . . . . . : 00-11-43-6A-99-E7

    C:\Documents and Settings\Wayne.TINA>ping www.yhaoo.com

    Pinging rc.yahoo.akadns.net [216.109.112.135] with 32 bytes of data:

    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.

    Ping statistics for 216.109.112.135:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

    C:\Documents and Settings\Wayne.TINA>ping www.umass.edu

    Pinging www.umass.edu [128.119.101.5] with 32 bytes of data:

    Reply from 128.119.101.5: bytes=32 time=15ms TTL=114
    Reply from 128.119.101.5: bytes=32 time=75ms TTL=114
    Reply from 128.119.101.5: bytes=32 time=15ms TTL=114
    Reply from 128.119.101.5: bytes=32 time=16ms TTL=114

    Ping statistics for 128.119.101.5:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 15ms, Maximum = 75ms, Average = 30ms

    C:\Documents and Settings\Wayne.TINA>ping 192.168.0.1

    Pinging 192.168.0.1 with 32 bytes of data:

    Reply from 192.168.0.1: bytes=32 time=25ms TTL=128
    Reply from 192.168.0.1: bytes=32 time=21ms TTL=128
    Reply from 192.168.0.1: bytes=32 time=9ms TTL=128
    Reply from 192.168.0.1: bytes=32 time=46ms TTL=128

    Ping statistics for 192.168.0.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 9ms, Maximum = 46ms, Average = 25ms

    C:\Documents and Settings\Wayne.TINA>ping www.google.com

    Pinging www.l.google.com [64.233.161.104] with 32 bytes of data:

    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.

    Ping statistics for 64.233.161.104:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
     
  8. jobeard

    jobeard TS Ambassador Posts: 9,311   +617

    ok -- slow down.

    you aparently are trying to get this to work
    Code:
    modem--systemA--- wireless --- systemB
    you would be better served if all systems were connecting to a router;
    Code:
    modem---router --- wired-systemA
               +
               +------ wireless--systemB
    in this way, systemB would be independent of systemA and could then be
    easily moved to/from the university

    try these techniques to get systemA correct and then apply them to
    systemB as well :)
     
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