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ARP stands for Address Resolution Protocol. ARP is a protocol by which we find out the layer 2 address (link layer address or MAC address) associated with the IP address. Before we talk more about ARP, let us have a glance at the MAC address and layer 2.
There are so many protocols out there in the computer networks world which focus on the QoS and improving data transmission quality and quantity. There is another protocol known as ICMP which can be seen as the auxiliary protocol supporting other important protocols in the internet protocol suite.
The Internet has run out of Internet addresses or will soon get exhausted. IPv4’s successor is IPv6, a system that will not only offer far more numerical addresses, but will simplify address assignments and additional network security features.
Cache poisoning is a kind of attack in which corrupted data is inserted into the cache database of DNS(Domain Name System) name server. The Domain Name System ( DNS ) is a system which associates domain names with respective IP addresses. Devices which are connected to the internet or a private network rely on the DNS for resolving URLs into their corresponding IP addresses. During a DNS cache poisoning attack, malicious party sends duplicate responses from an imposter DNS to reroute a domain name to a new IP address. The new IP address is most likely controlled by the attacker and is used to spread computer worms and other malware. Other sophisticated uses for DNS cache poisoning include denial-of-service attacks and man-in-the-middle attacks.
We all heard about firewall at some point of time, what are they used for ? Do they stop viruses?
Well actually, there is a great chance that you are now using a firewall, if your are running a modern OS on your computer, there is be one built in, or else your security suite will have a firewall.
But what is this firewall for? Keep reading for reasons why you do, need it.
Dynamic Host Configuration Protocol (DHCP ) is the technology that automatically assigns IP addresses to network devices. Most network administrators prefer to use DHCP rather than manually assigning IP addresses.
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