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View old Local Area Connection properties, In Windows XP
tantryl
post Feb 21 2012, 02:33 PM
Post #1
Super Hero
Immortal




I've got a system here that I've had to switch from one PC to the next (dead mainboard) and due to custom software (POS system) I can't simply do a re-install.

I've got the OS and whatnot working on the new hardware but I need to know what static IP address the previous network adapter was using (the device it's plugged into is passworded and set up in a certain way and the owners don't know the password - factory resetting it would screw up the POS system).

So on the new PC the network adapters (2 of them) are Local Area Connection 4 and Local Area Connection 5. I need to look up the previous static IPs of Local Area Connection 3, 2 and 1 to figure out what the adapter is meant to be set to. Any ideas on how?


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"Unless I call you a stupid goddamn liar to your face, I'm being light hearted." - tantryl, to all you evil fucks

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Xen
post Feb 21 2012, 03:50 PM
Post #2
Atomican
Overlord




QUOTE (tantryl @ Feb 21 2012, 03:33 PM) *
I've got a system here that I've had to switch from one PC to the next (dead mainboard) and due to custom software (POS system) I can't simply do a re-install.

I've got the OS and whatnot working on the new hardware but I need to know what static IP address the previous network adapter was using (the device it's plugged into is passworded and set up in a certain way and the owners don't know the password - factory resetting it would screw up the POS system).

So on the new PC the network adapters (2 of them) are Local Area Connection 4 and Local Area Connection 5. I need to look up the previous static IPs of Local Area Connection 3, 2 and 1 to figure out what the adapter is meant to be set to. Any ideas on how?


Only thing i could think of would be to dig around through the event logs and or any other log files hoping to come across one or both of the IP addresses.

the other shitty option would be to see if you can grab the router IP address by sniffing out some ARP packets then randomly testing ip addresses from the subnet... i however would prefer a rusty fork to the eye.


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tantryl
post Feb 21 2012, 04:15 PM
Post #3
Super Hero
Immortal




I know the router IP, I just don't know what the computer's static IP needs to be. It's possible I can find it through one of the terminals, but that sounds like the more difficult task.

*EDIT* Only IP addresses I could find in the event viewer were for the terminals (it's creating DCOM events when it can't find them).

This post has been edited by tantryl: Feb 21 2012, 04:24 PM


--------------------
"Unless I call you a stupid goddamn liar to your face, I'm being light hearted." - tantryl, to all you evil fucks

"Two things. Number one; I get hard when a woman cries. Number two; your daughter will never walk again." - Dr Glenn Richie
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sponger
post Feb 22 2012, 12:56 AM
Post #4
Atomican
Guru




I think Windows stores that stuff in the registry. Maybe search it for the network portion of the address, eg if the network's 192.168.0.0/24 search for "192.168.0".

Or search for what you believe the interfaces were named, eg "Local Area Connection", but from my quick look (on Windows 7) the results don't seem to accompany IP details (but potentially other stuff to identify/find the correct IP details).

Of course, Windows may have deleted old config.
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Xen
post Feb 22 2012, 07:54 AM
Post #5
Atomican
Overlord




QUOTE (sponger @ Feb 22 2012, 12:56 AM) *
Of course, Windows may have deleted old config.


That was my first thought when i saw the OP's question.

I don't think that the original IP address would be kept anywhere other than logs when the IP address has been changed.



--------------------
如诸佛尽寿不杀生, 我亦尽寿不杀生
如诸佛尽寿不偷盗, 我亦尽寿不偷盗
如诸佛尽寿不妄语, 我某甲亦尽寿不妄语
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lew~
post Feb 22 2012, 08:49 AM
Post #6
Atomican
Champion




QUOTE (Xen @ Feb 22 2012, 08:24 AM) *
QUOTE (sponger @ Feb 22 2012, 12:56 AM) *
Of course, Windows may have deleted old config.


That was my first thought when i saw the OP's question.

I don't think that the original IP address would be kept anywhere other than logs when the IP address has been changed.

Registry was my first thought.



Does it have to be the exact IP? e.g. could you configure addresses in each of the private subnet ranges and do a ping scan to test connectivity? 10.0.0.10/8, 192.0.0.10/8, 172.0.0.10/8
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SledgY
post Feb 22 2012, 12:36 PM
Post #7
Atomican
Master




The IP address might still be listed in the routers ARP table. You will need to do a little elimination and guess work if you don't know the actual MAC address.

This post has been edited by SledgY: Feb 22 2012, 12:43 PM


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AccessDenied
post Mar 10 2012, 01:45 PM
Post #8
Hero
Guru




If you have other POS's, can you do 'the obvious' and check their IPs and see whether there is a standard? If you have 192.168.0.41 and 192.168.0.43, you could guess at .42

AD

F#$KIT. Just saw the date. My point still stands.


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chrisbrownie
post Mar 14 2012, 09:34 PM
Post #9
Atomican
Champion




HKLM\SYSTEM\CurrentcontrolSet\network\

enjoy.
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