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I-339 If you need to find out DHCP information about a particular client but dont have access to the DHCP admin tool, you can still get the information by viewing these registry entries remotely.
Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\ Parameters\Tcpip |
Value Name: | DhcpDefaultGateway |
Data Type: | REG_MULTI_SZ |
Value: | any valid IP address |
This value specifies the default gateway list assigned to the client by the DHCP server.
I-340 | Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\ Parameters\Tcpip | |
Value Name: | DhcpIPAddress | |
Data Type: | REG_SZ | |
Value: | any valid IP address |
This value is the IP address assigned to the user via the DHCP server. If the first value is anything other than 0.0.0.0, that value will override the DHCP-assigned value.
I-341 | Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\ Parameters\Tcpip | |
Value Name: | DhcpNameServer | |
Data Type: | REG_SZ | |
Value: | any set of valid IP addresses |
This value is the set of name servers that your system uses to resolve DNS queries.
I-342 | Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\ Parameters\Tcpip | |
Value Name: | DhcpServer | |
Data Type: | REG_SZ | |
Value: | any valid IP address |
This value is the IP address of the DHCP server that granted your client the IP address thats stored in the DhcpIPAddress registry value.
I-343 | Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\ Parameters\Tcpip | |
Value Name: | DhcpSubnetMask | |
Data Type: | REG_SZ | |
Value: | any valid subnet mask for the current IP address space |
This value is the DHCP Server-assigned subnet mask.
I-344 | Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\ Parameters\Tcpip | |
Value Name: | Lease | |
Data Type: | REG_SZ | |
Value: | <time in seconds> |
This value is the number of seconds that the current lease is valid for a given client.
I-345 | Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\Parameters\Tcpip | |
Value Name: | LeaseObtainedTime | |
Data Type: | REG_SZ | |
Value: | number of seconds since 1/1/70 |
This value is the time in seconds since the current lease was obtained. You need to convert this number to do anything meaningful with it. Several programs available on the Web can convert it for you.
I-346 | Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\<adapter name>\ Parameters\Tcpip | |
Value Name: | LeaseTerminatesTime | |
Data Type: | REG_SZ | |
Value: | number of seconds since 1/1/70 |
This value is the time when the current lease will expire, stored in form of the number of seconds since 1/1/70. Using the remote viewing capabilities of Regedt32.exe, you can view this information on any machine you have access to via the network.
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