Telecommunication Security

while physical separation between network segments,VLAN

rely on switching should be perfect, if not

so,misconfiguration or a bug could cause the VLAN barriers

to be broken

There i a 2 risk

1.packet leaks from one VLAN to another, possibly revealing

sensitive information

2.In the second, a specially crafted packet is injected

into another VLAN. Any attack that could cause the VLAN

barriers to break requires a machine directly attached to

the physical network. This means that only a local machine

can execute an attack against the switch.

NMS is a GUI(Graphical user interface) device by using SNMP

protocal you remotely monitor/config/operate the device. By

NMS u have full control of remote device 7 u do

testing/config/updation/status.....of remote device

CDMA(CODE DIVISION MULTIPLE ACCESS) technology is a

wireless technology used in transmission os signal from one

place to another with high secury and noise reduction.

CDMA works on the principle of Spresd spectrum.Herewith

the help of a CODE, data signal is spread like a noise like

signal which is unable to detect by others.it provides

security.Since the spreaded signal is below the noise level

noise has no effect on the signal.its provides noise reduction

CDMA was developed during second world war inorder to

transmit signals in military.high security provides a wide

application in military