farhan... i'm looking for PORT MIRRORING technique.... some port mirroring detail is as under
Port Mirroring :
Port Mirroring copies all received and transmitted packets (including local traffic) from a source to a predefined destination port, in addition to the normal destination port of the packets. Port Mirroring, also known as "sniffing" is useful in debugging problems.
Port mirroring enables the network manager to define a source port and a destination port, regardless of port type. For example, a 10Mbps and a 100Mbps port can form a valid source/destination pair. In addition, it allows a single pair of ports in the to be defined as a port duplicate pair. The network manager cannot, however define the port mirroring source and destination ports as the same port.
i hope u got my point... thx