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why address refer to router and not private address of machine

Posted on 2004-03-23
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Last Modified: 2013-11-29
i am running win xp behind a broadband->modem->router.

i setup up my IIS port TCP port to 1515.

my computer name is yccheok

when i type, "http://localhost:1515" in my web broswer, fine, it works!

when i type, "http://yccheok:1515" in my web broswer, fine, it works!

however, when i type, "http://10.0.0.9:1515" in my web broswer, OPPs, it does not works!

it will prompt out a dialog box requires me to enter username (with 10.0.0.9\admin as default) and password.

strange. it look like my broswer is dialing to the router. however, 10.0.0.9 is not my router address. (my router address is 10.0.0.2)

i run ipconfig and ping yccheok, they give me the result of following:

Windows IP Configuration


Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        IP Address. . . . . . . . . . . . : 10.0.0.9
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 10.0.0.2


Pinging yccheok [10.0.0.9] with 32 bytes of data:

Reply from 10.0.0.9: bytes=32 time<1ms TTL=128
Reply from 10.0.0.9: bytes=32 time<1ms TTL=128
Reply from 10.0.0.9: bytes=32 time<1ms TTL=128
Reply from 10.0.0.9: bytes=32 time<1ms TTL=128

Ping statistics for 10.0.0.9:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms

it seems that 10.0.0.9 is my private address. 10.0.0.2 is my router address.

please note that i didnt use any port forwarding in my router. ya, i do use NAT in my router.

may i know how can i solve this problem by enable me to take 10.0.0.9:1515 to refer to the IIS server. not router.

thank you.

regards
yan cheng
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Question by:yccheok
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11 Comments
 
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Expert Comment

by:wyliecoyoteuk
ID: 10660962
Try ipconfig /all
it may give you a clue.

also, try  tracert 10.0.0.9

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Expert Comment

by:ohyeah1942
ID: 10661161
please post the results of tracert 10.0.0.9

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Expert Comment

by:ohyeah1942
ID: 10661175
sorry, also please post output of nslookup yccheok
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Author Comment

by:yccheok
ID: 10663822
C:\Documents and Settings\Yan Cheng>ipconfig /all

Windows IP Configuration

        Host Name . . . . . . . . . . . . : yccheok
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : 3Com Gigabit LOM (3C940)
        Physical Address. . . . . . . . . : 00-0C-6E-61-94-86
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 10.0.0.9
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 10.0.0.2
        DHCP Server . . . . . . . . . . . : 10.0.0.2
        DNS Servers . . . . . . . . . . . : 10.0.0.2
        Lease Obtained. . . . . . . . . . : Wednesday, March 24, 2004 9:56:10 AM

        Lease Expires . . . . . . . . . . : Tuesday, March 30, 2004 9:31:10 PM



C:\Documents and Settings\Yan Cheng>nslookup yccheok
*** Can't find server name for address 10.0.0.2: Non-existent domain
*** Default servers are not available
Server:  UnKnown
Address:  10.0.0.2

*** UnKnown can't find yccheok: Non-existent domain



C:\Documents and Settings\Yan Cheng>tracert 10.0.0.9

Tracing route to yccheok [10.0.0.9]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  yccheok [10.0.0.9]

Trace complete.
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Author Comment

by:yccheok
ID: 10663857
additional information, i am using DHCP server with start address is 10.0.0.4 to 10.0.0.15. thx.

regards
yan cheng
0
 

Author Comment

by:yccheok
ID: 10663867
oh, i had make some mistake in the 1st post, i am running win xp behind a broadband->modem(with built-in router)->switch. really sorry for tat.

thank you.

regards
yan cheng
0
 
LVL 21

Expert Comment

by:wyliecoyoteuk
ID: 10665950
Right, it seems that XP is trying to do an IP to name resolution, but as the Router is a caching only DNS system, that will not work.
The only way around this is to have a local DNS server, or to insert an entry in the arp cache.

arp -s <macaddress> <ipaddress> may work.
0
 

Author Comment

by:yccheok
ID: 10666967
hi folks, i think i make a mistake. since there is a configuration on IIS/ default ASP page which it will prompt user for username and password when it detect the request are not from LAN :P the password prompt are from ASP page itself, not router :P

i solve the problem oledi

thank you.

regards
yan cheng
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