может проще будет посмотреть в логах файрволла linux, - кто, куда, что, прислал. И уже по факту лога делать вывод, что закрывать, что открывать.

ALex_hhaСобственно можно ли как то штатными средствами (в идеале через vbscript), поочередно отправить пакет на определенный хост и порт без использования внешних программ?

З.Ы.
нужно это для открытия доступа к определенным сервисам в файрволе linux

Почемубы не воспользоваться стронними разработками ? Это ведь тест файрвола и ничего больше!

а вот "можно ли как то штатными средствами" навевают мысли ни об чём.

обычные люди (программисты) не могут написать TCP/UDP клиента для вас ?

у вас даже Задача поставлена и сформулирована, условие:
ALex_hhaВот если обращусь на порт 12345 протокол tcp и потом на порт 54321 протокол udp в течение 20 сек


в дельфях работы на 20 минут. Использовать библтотеку indy (сэкономил ещё 5 минут).

а штатных средств для UDP нету т.е. я незнаю таковых.

aleks2bremborgа штатных средств для UDP нету т.е. я незнаю таковых.
Win32 APIThe Windows Sockets socket function creates a socket which is bound to a specific service provider.

SOCKET socket (

int af,
int type,
int protocol
);


Parameters

af

[in] An address family specification.

type

[in] A type specification for the new socket.

protocol

[in] A particular protocol to be used with the socket which is specific to the indicated address family.



Remarks

The socket function causes a socket descriptor and any related resources to be allocated and bound to a specific transport service provider. Windows Sockets will utilize the first available service provider that supports the requested combination of address family, socket type and protocol parameters. Note that the socket created will have the overlapped attribute. Sockets without the overlapped attribute can only be created by using WSASocket.



Note The manifest constant AF_UNSPEC continues to be defined in the header file but its use is strongly discouraged, as this can cause ambiguity in interpreting the value of the protocol parameter.



The following are the only two type specifications supported for Windows Sockets 1.1:

Type Explanation
SOCK_STREAM Provides sequenced, reliable, two-way, connection-based byte streams with an out-of-band data transmission mechanism. Uses TCP for the Internet address family.
SOCK_DGRAM Supports datagrams, which are connectionless, unreliable buffers of a fixed (typically small) maximum length. Uses UDP for the Internet address family.

In Windows Sockets 2, many new socket types will be introduced. However, since an application can dynamically discover the attributes of each available transport protocol through the WSAEnumProtocols function, the various socket types need not be called out in the API specification. Socket type definitions will appear in WINSOCK2.H which will be periodically updated as new socket types, address families and protocols are defined.
Connection-oriented sockets such as SOCK_STREAM provide full-duplex connections, and must be in a connected state before any data can be sent or received on it. A connection to another socket is created with a connect call. Once connected, data can be transferred using send and recv calls. When a session has been completed, a closesocket must be performed.

The communications protocols used to implement a reliable, connection-oriented socket ensure that data is not lost or duplicated. If data for which the peer protocol has buffer space cannot be successfully transmitted within a reasonable length of time, the connection is considered broken and subsequent calls will fail with the error code set to WSAETIMEDOUT.
Connectionless, message-oriented sockets allow sending and receiving of datagrams to and from arbitrary peers using sendto and recvfrom. If such a socket is connected to a specific peer, datagrams can be sent to that peer using send and can be received only from this peer using recv.

Support for sockets with type RAW is not required, but service providers are encourage to support raw sockets whenever it makes sense to do so.

Return Values

If no error occurs, socket returns a descriptor referencing the new socket. Otherwise, a value of INVALID_SOCKET is returned, and a specific error code can be retrieved by calling WSAGetLastError.

Error Codes

WSANOTINITIALISED A successful WSAStartup must occur before using this function.
WSAENETDOWN The network subsystem or the associated service provider has failed.
WSAEAFNOSUPPORT The specified address family is not supported.
WSAEINPROGRESS A blocking Windows Sockets 1.1 call is in progress, or the service provider is still processing a callback function.
WSAEMFILE No more socket descriptors are available.
WSAENOBUFS No buffer space is available. The socket cannot be created.
WSAEPROTONOSUPPORT The specified protocol is not supported.
WSAEPROTOTYPE The specified protocol is the wrong type for this socket.
WSAESOCKTNOSUPPORT The specified socket type is not supported in this address family.


See Also

accept, bind, connect, getsockname, getsockopt, ioctlsocket, listen, recv, recvfrom, select, send, sendto, setsockopt, shutdown, WSASocket


2aleks2
это надо понимать вместо рабочего примера с использованием штатных средств.

спасибо конечно. MSDN юзать умею. но всё равно спасибо.

MazoHistА почему бы не использовать vpn-технологии (например, openvpn)?

может потому, что ТС требуется чтоб его схема работала у любого юзера на винде "из коробки". Ненадо ничего доустанавливать, настраивать. Безопасность обеспечивает фаерволл. Закрыто всё для всех. А вот если постучаться три коротких, один длинный :) , тогда велкам.

Dimitry SibiryakovОднако, VPN-клиент в ней есть именно из коробки...


Но надо настраивать...