Application layer is the critical measurement of OSI (Open Systems Interconnection) model which is made up of multiple layers. And SSI (Simple Sensor Interface) protocol works as a trouble free communication protocol for application layer.
Networking protocol “SPDY” is used commonly to transport the web content. It is the shortened form of “SPeeDY”. Google (Google Chrome & Chromium) uses this protocol to promote the open-source project (chromium web browser) protocol in order to improve the functionality of HTTP protocol. Since, speeding up the act of transmission is achieved via compression which is the feature of SPDY. In other words, it is developed to access the Google’s web services via browser, named as Google chrome.
Cisco Switch password recovery
After you set passwords to control access to the Cisco IOS CLI, you need to make sure you remember them. In case you have lost or forgotten access passwords, Cisco has a password recovery mechanism that allows administrators to gain access to their Cisco devices.
Fiber optic
Today’s finest technology “Fiber optic” is making use of glass or plastic threads objects for the at hand better results during the process of transmitting data with their help. Usually, this fiber is consisted on a cluster of glass fibers. And every piece of this particularly popular technology is able to transmit messages.
More than once we were in the situation where we needed to configure couple of switches and routers in the same time. More precisely, almost every time we are in a situation where we must configure or troubleshoot more devices in the same time.
Of course that we don’t want to reconnect console cable to every other switch every time we want to make a show command on it.
We want to be able to connect to all the devices in the same time and then just use multiple command prompts one for each device. In this manner we are faster in the troubleshooting process and we can make configurations steps without loosing time on transferring the console cable. Furthermore we have better overview on the configuration as we make troubleshooting commands and we can easily compare different configurations just by opening two command prompts one close to other.
CDP – The Cisco Discovery Protocol is a proprietary protocol that all Cisco devices can use by default. CDP discovers other Cisco devices that are directly connected, which makes possible to the devices to auto-configure their connection in some cases, simplifying configuration and connectivity. CDP messages are not encrypted.
One of the Layer 2 attacks inside a LAN network that is very dangerous for information privacy and LAN integrity is spoofing attack.
This is special kind of attack where attacker can gain access to network traffic by spoofing responses that would be sent by a valid DHCP server. This attack is using a technique ARP spoofing, also called ARP cache poisoning or ARP poison routing (APR) that is a simple LAN attack technique. ARP spoofing will allow an attacker to intercept frames on a LAN, modify the traffic, stop the traffic or simply sniff all the traffic. This is possible because all the communication in LAN is now crossing attackers interface and this communication is vulnerable to packet sniffing.