TCP/IP Part 2

This is the next blog post in my series on TCP/IP based on the Infinite Skills course. First of all I'm looking at IP addresses. These are numbered in 4 groups from 0 to 255 and can be made up in 7 digits. Computers count in binary where 1 indicates a circuit in on and 0 off. Networks are numbered according to these numbers and the series

255.255.255.0 indicates a subnet which is where a network is subdivided. There is also regions of these numbers for things like broadcasts and multicasts and the further to the left the number is divided generally the bigger the network. There are also various protocols some of which I'm going to look at. ICMP is information control management protocol. It gives generally diagnostic information about a host. DHCP is dynamic host control protocol and is a non-static numbering system for hosts on a network as opposed to the static numbering of boot protocol. ARP is address resolution protocol and is when a sending host tries to find a recieving host and out several digits which are answering similarly. You do see ARP spoofing because there is no authenticode as such any host can send any ARP signal with the right software like Kane And Able which is a software program that will do the job. OSPF is open shortest path first and is a protocol that sends information about where a receiving host is and the shortest route that can be used with the least number of hops between routers. BGP is border gateway protocol and is the location of the receiving host sent to the sending host and also there are keep alive to show both hosts are still active during message transmission. I'll be doing another installment tomorrow.