Internet Authentication Service & Network Policy Server
Internet Authentication Service (IAS) was renamed Network Policy Server (NPS).
Internet Authentication Service
Internet Authentication Service is the Microsoft implementation of a RADIUS server and proxy.
Internet Authentication Service supports two API sets: Network Policy Server Extensions API and Server Data Objects API.
Network Policy Server
Network Policy Server is the Microsoft implementation of a RADIUS server and proxy and it is available on Windows servers starting with Windows Server 2008.
In addition, NPS contains a set of new features that expand the IAS capabilities.
| Feature | What’s new for NPS |
|---|---|
| Network Access Protection (NAP) | NPS is the central server of Network Access Protection. NPS supports policy authoring using the following additional conditions:
NPS supports policy authoring using the following additional settings:
NPS, through NAP, interoperates with CISCO NAC. |
| EAP Policy and EAPHost Support | NPS uses EAPHost for EAP method extensibility. Additionally, administrators may configure network access policy for EAP. IAS does not support EAPHost integration, or EAP type filter conditions for policies. |
| IPv6 Support | NPS supports deployment in IPv6 environments. IAS does not support IPv6 network addresses. |
| XML Configuration | NPS configuration can be imported and exported in XML format. IAS is using a Jet database for storing service configuration. |
| Common Criteria Support | NPS has been updated to support its deployment in environments that must meet the Common Criteria security standards. |
| NPS Extensions API | The NPS extension DLLs run in a separate process from the NPS service. Should an extension DLL crash, NPS will keep running and future requests will be rejected. The IAS extension DLLs run in the same process as the IAS service and may adversely affect the service. |
| Management User Interface | The NPS management console (nps.msc) has a new look, improved usability, and covers all the new functionality added to NPS. IAS uses the ias.msc management console. |
| Role Management Tool and Server Manager Integration | NPS is integrated with the Server Manager and the Role Management Tool. This integration facilitates the configuration and management of NPS and related scenarios. Server Manager is not available on computers running IAS. |
| Updated Command Line Scripting with Netsh. | NPS supports the «Netsh nps» command line interface. «Netsh nps» contains new commands that permit to fully configure NPS, including NAP features. IAS supports the «Netsh aaaa» command line interface. |
| Policy Isolation | NPS enables the implementation of policy isolation by setting the Network Policy Source. Policies can be configured that are applicable only to a predetermined NAS type. IAS does not support policy isolation. |
See TechNet: Network Policy Server for more information on NPS.
Изменяем сетевые параметры Windows с помощью netsh+batch
Года полтора назад была у меня такая рутинная работа: приходя на работу – вводить IP-адрес, маску, шлюз, DNS для Ethernet-порта ноутбука, а приходя домой – менять все эти параметры на другие. Первое время я мирился, но длилось это недолго – ну как можно каждый день делать одно и то же!? Тогда и вышел я на след Windows-утилиты netsh, которая, вкупе с batch-файлом дала возможность делать то же самое, но гораздо (!) быстрее и удобнее (используя стандартные средства Windows и всего один текстовый файл).
Здесь утилита netsh уже была немного описана, но я предлагаю другую реализацию, возможности которой будут более гибкими.
Netsh
Итак, поигравшись с netsh на Windows 7 (для Windows XP синтаксис немного меняется) я обнаружил, что можно присвоить интерфейсу (в приведенном ниже примере — интерфейсу под названием «LAN») IP-адрес, маску и шлюз с помощью команды:
Команды, понятное дело, вводятся в командной строке Windows. Если параметры отказываются изменяться — запускаем cmd от имени администратора.
Если понадобится добавить еще один IP-адрес, то используем:
Две следующие команды очищают список DNS-серверов и выставляют IP-адрес 212.154.163.162 первым в списке DNS-серверов:
Чтобы предоставить возможность назначения сетевых параметров DHCP-серверу используем:
Ну и для отображения текущих параметров можно использовать:
Batch-файлы
На этом закончим наше знакомство с netsh и перейдем к batch-файлами Windows (текстовый файл с расширением «bat»), который позволяет не только автоматизировать ввод длинных команд (в том числе и netsh-комманд), но также поможет сделать этот процесс более интересным, интерактивным и не заставит нас использовать для каждого варианта настроек отдельный файл.
Для вывода на экран используется команда «ECHO» (она будет использоваться для вывода своеобразного меню):
Для вывода сообщения и запроса ввода от пользователя используем «SET»:
Для условного перехода к метке воспользуемся связкой «IF» и «GOTO» (если кто знает, можно ли использовать Case — буду рад упростить итоговый скрипт):
Для обозначения метки (в нашем случае метки «one») используется двоеточие:
Итого
На этом можно закончить и торжественно сообщить, что Вы знаете все, что нужно для того, чтобы полностью разобраться в итоговом batch-файле (есть комментарии на русском языке) и переделать его под себя. Вот ссылка на страничку гугл-проекта QNet (сделал по аналогии с Yet Another Net Switcher — спасибо автору, раньше этим не пользовался). Ах да, комментарии в batch-файлах начинаются с «rem».
P.S. Теперь ни на работе, ни дома этим скриптом почти не пользуюсь (есть DHCP), но в командировках — по-прежнему очень удобная вещь.
P.P.S. С русскоязычным названием «Подключение по локальной сети» скрипт может и не сработать, но я давно привык именовать сетевые карты как «LAN» и «WLAN».
Данная статья не подлежит комментированию, поскольку её автор ещё не является полноправным участником сообщества. Вы сможете связаться с автором только после того, как он получит приглашение от кого-либо из участников сообщества. До этого момента его username будет скрыт псевдонимом.
Win32_NetworkAdapterConfiguration class
The Win32_NetworkAdapterConfiguration WMI classrepresents the attributes and behaviors of a network adapter. This class includes extra properties and methods that support the management of the TCP/IP protocol that are independent from the network adapter.
The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties. Properties are listed in alphabetic order, not MOF order.
Syntax
Members
The Win32_NetworkAdapterConfiguration class has these types of members:
Methods
The Win32_NetworkAdapterConfiguration class has these methods.
| Method | Description |
|---|---|
| DisableIPSec | Disables IPsec on this TCP/IP-enabled network adapter. |
| EnableDHCP | Enables the Dynamic Host Configuration Protocol (DHCP) for service with this network adapter. |
| EnableDNS | Enables the Domain Name System (DNS) for service on this TCP/IP-bound network adapter. |
| EnableIPFilterSec | Enables IPsec globally across all IP-bound network adapters. |
| EnableIPSec | Enables IPsec on this specific TCP/IP-enabled network adapter. |
| EnableStatic | Enables static TCP/IP addressing for the target network adapter. |
| EnableWINS | Enables WINS settings specific to TCP/IP, but independent of the network adapter. |
| ReleaseDHCPLease | Releases the IP address bound to a specific DHCP-enabled network adapter. |
| ReleaseDHCPLeaseAll | Releases the IP addresses bound to all DHCP-enabled network adapters. |
| RenewDHCPLease | Renews the IP address on specific DHCP-enabled network adapters. |
| RenewDHCPLeaseAll | Renews the IP addresses on all DHCP-enabled network adapters. |
| SetArpAlwaysSourceRoute | Sets the transmission of ARP queries by the TCP/IP. |
| SetArpUseEtherSNAP | Enables Ethernet packets to use 802.3 SNAP encoding. |
| SetDatabasePath | Sets the path to the standard Internet database files (HOSTS, LMHOSTS, NETWORKS, and PROTOCOLS). |
| SetDeadGWDetect | Enables dead gateway detection. |
| SetDefaultTOS | Obsolete. This method sets the default Type of Service (TOS) value in the header of outgoing IP packets. |
| SetDefaultTTL | Sets the default Time to Live (TTL) value in the header of outgoing IP packets. |
| SetDNSDomain | Sets the DNS domain. |
| SetDNSServerSearchOrder | Sets the server search order as an array of elements. |
| SetDNSSuffixSearchOrder | Sets the suffix search order as an array of elements. |
| SetDynamicDNSRegistration | Indicates dynamic DNS registration of IP addresses for this IP-bound adapter. |
| SetForwardBufferMemory | Specifies how much memory IP allocates to store packet data in the router packet queue. |
| SetGateways | Specifies a list of gateways for routing packets destined for a different subnet than the one this adapter is connected to. |
| SetIGMPLevel | Sets the extent to which the system supports IP multicasting and participates in the Internet Group Management Protocol. |
| SetIPConnectionMetric | Sets the routing metric associated with this IP-bound adapter. |
| SetIPUseZeroBroadcast | Sets IP zero broadcast usage. |
| SetIPXFrameTypeNetworkPairs | Sets Internetworking Packet Exchange (IPX) network number/frame pairs for this network adapter. |
| SetIPXVirtualNetworkNumber | Sets the Internetworking Packet Exchange (IPX) virtual network number on the target computer system. |
| SetKeepAliveInterval | Sets the interval separating Keep Alive Retransmissions until a response is received. |
| SetKeepAliveTime | Sets how often TCP attempts to verify that an idle connection is still available by sending a Keep Alive packet. |
| SetMTU | Sets the default Maximum Transmission Unit (MTU) for a network interface. This method is not supported. |
| SetNumForwardPackets | Sets the number of IP packet headers allocated for the router packet queue. |
| SetPMTUBHDetect | Enables detection of Black Hole routers. |
| SetPMTUDiscovery | Enables Maximum Transmission Unit (MTU) discovery. |
| SetTcpipNetbios | Sets the default operation of NetBIOS over TCP/IP. |
| SetTcpMaxConnectRetransmissions | Sets the number of attempts TCP will retransmit a connect request before aborting. |
| SetTcpMaxDataRetransmissions | Sets the number of times TCP will retransmit an individual data segment before aborting the connection. |
| SetTcpNumConnections | Sets the maximum number of connections that TCP may have open simultaneously. |
| SetTcpUseRFC1122UrgentPointer | Specifies whether TCP uses the RFC 1122 specification for urgent data, or the mode used by Berkeley Software Design (BSD) derived systems. |
| SetTcpWindowSize | Sets the maximum TCP Receive Window size offered by the system. |
| SetWINSServer | Sets the primary and secondary Windows Internet Naming Service (WINS) servers on this TCP/IP-bound network adapter. |
Properties
The Win32_NetworkAdapterConfiguration class has these properties.
ArpAlwaysSourceRoute
Data type: boolean
Access type: Read-only
If TRUE, TCP/IP transmits Address Resolution Protocol (ARP) queries with source routing enabled on Token Ring networks. By default (FALSE), ARP first queries without source routing, and then retries with source routing enabled if no reply is received. Source routing allows the routing of network packets across different types of networks.
ArpUseEtherSNAP
Data type: boolean
Access type: Read-only
If TRUE, Ethernet packets follow the IEEE 802.3 Sub-Network Access Protocol (SNAP) encoding. Setting this parameter to 1 forces TCP/IP to transmit Ethernet packets by using 802.3 SNAP encoding. By default (FALSE), the stack transmits packets in DIX Ethernet format.
Caption
Data type: string
Access type: Read-only
Short textual description of the current object.
DatabasePath
Data type: string
Access type: Read-only
Valid Windows file path to standard Internet database files (HOSTS, LMHOSTS, NETWORKS, and PROTOCOLS). The file path is used by the Windows Sockets interface.
DeadGWDetectEnabled
Data type: boolean
Access type: Read-only
If TRUE, dead gateway detection occurs. With this feature enabled, Transmission Control Protocol (TCP) asks Internet Protocol (IP) to change to a backup gateway if it retransmits a segment several times without receiving a response.
DefaultIPGateway
Data type: string array
Access type: Read-only
Array of IP addresses of default gateways that the computer system uses.
Example: «192.168.12.1 192.168.46.1»
DefaultTOS
Data type: uint8
Access type: Read-only
Default Type Of Service (TOS) value set in the header of outgoing IP packets. Request for Comments (RFC) 791 defines the values. Default: 0 (zero), Valid Range: 0 — 255.
DefaultTTL
Data type: uint8
Access type: Read-only
Default Time To Live (TTL) value set in the header of outgoing IP packets. The TTL specifies the number of routers an IP packet can pass through to reach its destination before being discarded. Each router decrements by one the TTL count of a packet as it passes through and discards the packets—if the TTL is 0 (zero). Default: 32, Valid Range: 1 — 255.
Description
Data type: string
Access type: Read-only
Textual description of the current object.
DHCPEnabled
Data type: boolean
Access type: Read-only
If TRUE, the dynamic host configuration protocol (DHCP) server automatically assigns an IP address to the computer system when establishing a network connection.
DHCPLeaseExpires
Data type: datetime
Access type: Read-only
Expiration date and time for a leased IP address that was assigned to the computer by the dynamic host configuration protocol (DHCP) server.
DHCPLeaseObtained
Data type: datetime
Access type: Read-only
Date and time the lease was obtained for the IP address assigned to the computer by the dynamic host configuration protocol (DHCP) server.
DHCPServer
Data type: string
Access type: Read-only
IP address of the dynamic host configuration protocol (DHCP) server.
DNSDomain
Data type: string
Access type: Read-only
Organization name followed by a period and an extension that indicates the type of organization, such as «microsoft.com». The name can be any combination of the letters A through Z, the numerals 0 through 9, and the hyphen (-), plus the period (.) character used as a separator.
DNSDomainSuffixSearchOrder
Data type: string array
Access type: Read-only
Array of DNS domain suffixes to be appended to the end of host names during name resolution. When attempting to resolve a fully qualified domain name (FQDN) from a host-only name, the system will first append the local domain name. If this is not successful, the system will use the domain suffix list to create additional FQDNs in the order listed and query DNS servers for each.
Example: «samples.microsoft.com example.microsoft.com»
DNSEnabledForWINSResolution
Data type: boolean
Access type: Read-only
If TRUE, the Domain Name System (DNS) is enabled for name resolution over Windows Internet Naming Service (WINS) resolution. If the name cannot be resolved using DNS, the name request is forwarded to WINS for resolution.
DNSHostName
Data type: string
Access type: Read-only
Host name used to identify the local computer for authentication by some utilities. Other TCP/IP-based utilities can use this value to acquire the name of the local computer. Host names are stored on DNS servers in a table that maps names to IP addresses for use by DNS. The name can be any combination of the letters A through Z, the numerals 0 through 9, and the hyphen (-), plus the period (.) character used as a separator. By default, this value is the Microsoft networking computer name, but the network administrator can assign another host name without affecting the computer name.
DNSServerSearchOrder
Data type: string array
Access type: Read-only
Array of server IP addresses to be used in querying for DNS servers.
DomainDNSRegistrationEnabled
Data type: boolean
Access type: Read-only
If TRUE, the IP addresses for this connection are registered in DNS under the domain name of this connection in addition to being registered under the computer’s full DNS name. The domain name of this connection is either set using the SetDNSDomain() method or assigned by DSCP. The registered name is the host name of the computer with the domain name appended.
ForwardBufferMemory
Data type: uint32
Access type: Read-only
Qualifiers: MappingStrings («Win32Registry|SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters|ForwardBufferMemory»), Units («bytes»)
Memory allocated by IP to store packet data in the router packet queue. When this buffer space is filled, the router begins discarding packets at random from its queue. Packet queue data buffers are 256 bytes in length, so the value of this parameter should be a multiple of 256. Multiple buffers are chained together for larger packets. The IP header for a packet is stored separately. This parameter is ignored and no buffers are allocated if the IP router is not enabled. The buffer size can range from the network MTU to a value smaller than 0xFFFFFFFF. Default: 74240 (fifty 1480-byte packets, rounded to a multiple of 256).
FullDNSRegistrationEnabled
Data type: boolean
Access type: Read-only
If TRUE, the IP addresses for this connection are registered in DNS under the computer’s full DNS name. The full DNS name of the computer is displayed on the Network Identification tab in the System application in Control Panel.
GatewayCostMetric
Data type: uint16 array
Access type: Read-only
Array of integer cost metric values (ranging from 1 to 9999) to be used in calculating the fastest, most reliable, or least resource-intensive routes. This argument has a one-to-one correspondence with the DefaultIPGateway property.
IGMPLevel
Data type: uint8
Access type: Read-only
Extent to which the system supports IP multicast and participates in the Internet Group Management Protocol (IGMP). At level 0 (zero), the system provides no multicast support. At level 1, the system may only send IP multicast packets. At level 2, the system may send IP multicast packets and fully participate in IGMP to receive multicast packets.
No Multicast (0)
IP Multicast (1)
IP & IGMP multicast (2)
IP and IGMP Multicast (default)
Index
Data type: uint32
Access type: Read-only
Index number of the Windows network adapter configuration. The index number is used when there is more than one configuration available.
InterfaceIndex
Data type: uint32
Access type: Read-only
Index value that uniquely identifies a local network interface. The value in this property is the same as the value in the InterfaceIndex property in the instance of Win32_IP4RouteTable that represents the network interface in the route table.
IPAddress
Data type: string array
Access type: Read-only
Array of all of the IP addresses associated with the current network adapter. This property can contain either IPv6 addresses or IPv4 addresses. For more information, see IPv6 and IPv4 Support in WMI.
Example IPv6 address: «2010:836B:4179::836B:4179»
IPConnectionMetric
Data type: uint32
Access type: Read-only
Cost of using the configured routes for the IP bound adapter and is the weighted value for those routes in the IP routing table. If there are multiple routes to a destination in the IP routing table, the route with the lowest metric is used. The default value is 1.
IPEnabled
Data type: boolean
Access type: Read-only
If TRUE, TCP/IP is bound and enabled on this network adapter.
IPFilterSecurityEnabled
Data type: boolean
Access type: Read-only
If TRUE, IP port security is enabled globally across all IP-bound network adapters and the security values associated with individual network adapters are in effect. This property is used in conjunction with IPSecPermitTCPPorts, IPSecPermitUDPPorts, and IPSecPermitIPProtocols. If FALSE, IP filter security is disabled across all network adapters and allows all port and protocol traffic to flow unfiltered.
IPPortSecurityEnabled
Data type: boolean
Access type: Read-only
If TRUE, IP port security is enabled globally across all IP-bound network adapters. This property is obsolete. In place of this property, you should use IPFilterSecurityEnabled.
IPSecPermitIPProtocols
Data type: string array
Access type: Read-only
Array of the protocols permitted to run over the IP. The list of protocols is defined using the EnableIPSec method. The list will either be empty or contain numeric values. A numeric value of 0 (zero) indicates access permission is granted for all protocols. An empty string indicates that no protocols are permitted to run when IPFilterSecurityEnabled is TRUE.
IPSecPermitTCPPorts
Data type: string array
Access type: Read-only
Array of the ports that will be granted access permission for TCP. The list of protocols is defined using the EnableIPSec method. The list will either be empty or contain numeric values. A numeric value of 0 (zero)indicates access permission is granted for all ports. An empty string indicates that no ports are granted access permission when IPFilterSecurityEnabled is TRUE.
IPSecPermitUDPPorts
Data type: string array
Access type: Read-only
Array of the ports that will be granted User Datagram Protocol (UDP) access permission. The list of protocols is defined using the EnableIPSec method. The list will either be empty or contain numeric values. A numeric value of 0 (zero) indicates access permission is granted for all ports. An empty string indicates that no ports are granted access permission when IPFilterSecurityEnabled is TRUE.
IPSubnet
Data type: string array
Access type: Read-only
Array of all of the subnet masks associated with the current network adapter.
IPUseZeroBroadcast
Data type: boolean
Access type: Read-only
If TRUE, IP zeros-broadcasts are used (0.0.0.0), and the system uses ones-broadcasts (255.255.255.255). Computer systems generally use ones-broadcasts, but those derived from BSD implementations use zeros-broadcasts. Systems that do not use that same broadcasts will not interoperate on the same network. The default is FALSE.
IPXAddress
Data type: string
Access type: Read-only
The Internetwork Packet Exchange (IPX) technology is no longer supported and this property does not contain useful data.
IPXEnabled
Data type: boolean
Access type: Read-only
The Internetwork Packet Exchange (IPX) technology is no longer supported and this property does not contain useful data.
IPXFrameType
Data type: uint32 array
Access type: Read-only
The Internetwork Packet Exchange (IPX) technology is no longer supported and this property does not contain useful data.
Ethernet II (0)
Ethernet 802.3 (1)
Ethernet 802.2 (2)
Ethernet SNAP (3)
AUTO (255)
IPXMediaType
Data type: uint32
Access type: Read-only
The Internetwork Packet Exchange (IPX) technology is no longer supported and this property does not contain useful data.
Ethernet (1)
Token ring (2)
FDDI (3)
ARCNET (8)
IPXNetworkNumber
Data type: string array
Access type: Read-only
The Internetwork Packet Exchange (IPX) technology is no longer supported and this property does not contain useful data.
IPXVirtualNetNumber
Data type: string
Access type: Read-only
The Internetwork Packet Exchange (IPX) technology is no longer supported and this property does not contain useful data.
KeepAliveInterval
Data type: uint32
Access type: Read-only
Qualifiers: MappingStrings («Win32Registry|SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters|KeepAliveInterval»), Units («milliseconds»)
Interval separating Keep Alive Retransmissions until a response is received. After a response is received, the delay until the next Keep Alive Transmission is again controlled by the value of KeepAliveTime. The connection will be aborted after the number of retransmissions specified by TcpMaxDataRetransmissions have gone unanswered. Default: 1000, Valid Range: 1 — 0xFFFFFFFF.
KeepAliveTime
Data type: uint32
Access type: Read-only
Qualifiers: MappingStrings («Win32Registry|SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters|KeepAliveInterval»), Units («milliseconds»)
The KeepAliveTime property indicates how often the TCP attempts to verify that an idle connection is still intact by sending a Keep Alive Packet. A remote system that is reachable will acknowledge the keep alive transmission. Keep Alive packets are not sent by default. This feature may be enabled in a connection by an application. Default: 7,200,000 (two hours).
MACAddress
Data type: string
Access type: Read-only
Qualifiers: MappingStrings («Win32API|Device Input and Output Functions|DeviceIoControl»)
Media Access Control (MAC) address of the network adapter. A MAC address is assigned by the manufacturer to uniquely identify the network adapter.
MTU
Data type: uint32
Access type: Read-only
Qualifiers: MappingStrings («Win32Registry|SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters|MTU»), Units («bytes»)
Overrides the default Maximum Transmission Unit (MTU) for a network interface. The MTU is the maximum packet size (including the transport header) that the transport will transmit over the underlying network. The IP datagram can span multiple packets. The range of this value spans the minimum packet size (68) to the MTU supported by the underlying network.
NumForwardPackets
Data type: uint32
Access type: Read-only
Number of IP packet headers allocated for the router packet queue. When all headers are in use, the router will begin to discard packets from the queue at random. This value should be at least as large as the ForwardBufferMemory value divided by the maximum IP data size of the networks connected to the router. It should be no larger than the ForwardBufferMemory value divided by 256, since at least 256 bytes of forward buffer memory are used for each packet. The optimal number of forward packets for a given ForwardBufferMemory size depends on the type of traffic on the network. It will be somewhere between these two values. If the router is not enabled, this parameter is ignored and no headers are allocated. Default: 50, Valid Range: 1 — 0xFFFFFFFE.
PMTUBHDetectEnabled
Data type: boolean
Access type: Read-only
If TRUE, detection of black hole routers occurs while TCP discovers the path of the Maximum Transmission Unit. A black hole router does not return ICMP Destination Unreachable messages when it needs to fragment an IP datagram with the Don’t Fragment bit set. TCP depends on receiving these messages to perform Path MTU Discovery. With this feature enabled, TCP will try to send segments without the Don’t Fragment bit set if several retransmissions of a segment go unacknowledged. If the segment is acknowledged as a result, the MSS will be decreased and the Don’t Fragment bit will be set in future packets on the connection. Enabling black hole detection increases the maximum number of retransmissions performed for a given segment. The default value of this property is FALSE.
PMTUDiscoveryEnabled
Data type: boolean
Access type: Read-only
If TRUE, the Maximum Transmission Unit (MTU) path is discovered over the path to a remote host. By discovering the MTU path and limiting TCP segments to this size, TCP can eliminate fragmentation at routers along the path that connect networks with different MTUs. Fragmentation adversely affects TCP throughput and network congestion. Setting this parameter to FALSE causes an MTU of 576 bytes to be used for all connections that are not to machines on the local subnet. The default is TRUE.
ServiceName
Data type: string
Access type: Read-only
Qualifiers: MappingStrings («Win32Registry|Software\\Microsoft\\Windows NT\\CurrentVersion\\NetworkCards|ServiceName»)
Service name of the network adapter. This name is usually shorter than the full product name.
SettingID
Data type: string
Access type: Read-only
Identifier by which the current object is known.
TcpipNetbiosOptions
Data type: uint32
Access type: Read-only
Bitmap of the possible settings related to NetBIOS over TCP/IP. Values are identified in the following list.
EnableNetbiosViaDhcp (0)
EnableNetbios (1)
DisableNetbios (2)
TcpMaxConnectRetransmissions
Data type: uint32
Access type: Read-only
Number of times TCP attempts to retransmit a Connect Request before terminating the connection. The initial retransmission timeout is 3 seconds. The retransmission timeout doubles for each attempt. Default: 3, Valid Range: 0 — 0xFFFFFFFF.
TcpMaxDataRetransmissions
Data type: uint32
Access type: Read-only
Number of times TCP retransmits an individual data segment (nonconnect segment) before terminating the connection. The retransmission timeout doubles with each successive retransmission on a connection. Default: 5, Valid Range: 0 — 0xFFFFFFFF.
TcpNumConnections
Data type: uint32
Access type: Read-only
Maximum number of connections that TCP can have open simultaneously. Default: 0xFFFFFE, Valid Range: 0 — 0xFFFFFE.
TcpUseRFC1122UrgentPointer
Data type: boolean
Access type: Read-only
If TRUE, TCP uses the RFC 1122 specification for urgent data. If FALSE (default), TCP uses the mode used by Berkeley Software Design (BSD) derived systems. The two mechanisms interpret the urgent pointer differently and are not interoperable. The default value is FALSE.
TcpWindowSize
Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings («Win32Registry|SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters|TcpWindowSize»), Units («bytes»)
Maximum TCP Receive Window size offered by the system. The Receive Window specifies the number of bytes a sender may transmit without receiving an acknowledgment. In general, larger receiving windows will improve performance over high-delay and high-bandwidth networks. For efficiency, the receiving window should be an even multiple of the TCP Maximum Segment Size (MSS). Default: Four times the maximum TCP data size or an even multiple of TCP data size rounded up to the nearest multiple of 8192. Ethernet networks default to 8760. Valid range: 0 — 65535.
WindowsВ Vista: This property accesses the «CurrentControlSet\\Services\\Tcpip\\Parameters|TcpWindowSize» registry entry, which is not used in the current implementation of the operating system.
WINSEnableLMHostsLookup
Data type: boolean
Access type: Read-only
If TRUE, local lookup files are used. Lookup files will contain a map of IP addresses to host names. If they exist on the local system, they will be found in %SystemRoot%\system32\drivers\etc.
WINSHostLookupFile
Data type: string
Access type: Read-only
Path to a WINS lookup file on the local system. This file will contain a map of IP addresses to host names. If the file specified in this property is found, it will be copied to the %SystemRoot%\system32\drivers\etc folder of the local system. Valid only if the WINSEnableLMHostsLookup property is TRUE.
WINSPrimaryServer
Data type: string
Access type: Read-only
Qualifiers: MappingStrings («Win32API|Device Input and Output Functions|DeviceIoControl»)
IP address for the primary WINS server.
WINSScopeID
Data type: string
Access type: Read-only
Value appended to the end of the NetBIOS name that isolates a group of computer systems communicating with only each other. It is used for all NetBIOS transactions over TCP/IP communications from that computer system. Computers configured with identical scope identifiers are able to communicate with this computer. TCP/IP clients with different scope identifiers disregard packets from computers with this scope identifier. Valid only when the EnableWINS method executes successfully.
WINSSecondaryServer
Data type: string
Access type: Read-only
Qualifiers: MappingStrings («Win32API|Device Input and Output Functions|DeviceIoControl»)
IP address for the secondary WINS server.
Remarks
The Win32_NetworkAdapterConfiguration class is derived from CIM_Setting.
Examples
The WMI Information Retriever VBScript code example on the TechNet Gallery uses the Win32_NetworkAdapterConfiguration class to retrieve network configuration information from a number of remote computers.
The Get-ComputerInfo — Query Computer Info From Local/Remote Computers — (WMI) PowerShell sample on TechNet Gallery uses a number of calls to hardware and software, including Win32_NetworkAdapterConfiguration, to display information about a local or remote system.
The following PowerShell code retrieves the configuration settings for the Microsoft ISTAP Adapter.
The following C# sample retrieves the description and index number of all network adapter configuration instances. Note that this C# sample uses the Microsoft.Management.Infrastructure namespace, which generally scales more efficiently than the System.Management namespace WMI classes.
The following C# sample retrieves the description and index number of all network adapter configuration instances. Note that this C# sample uses the original System.Management namespace, which has been superceded by Microsoft.Management.Infrastructure.
The following example retrieves information from the Win32_NetworkAdapterConfiguration class.
