Vint Cerf who is recognized as one of the fathers of the Internet, once said, “The wonderful thing about the Internet is that you’re connected to everyone else. The terrible thing about the Internet is that you’re connected to everyone else.” There has been an explosion in the size and scope of the Internet and today anyone with a computer can connect to almost anyone else. Most companies too are now permanently connected to the Internet, a network through which others could also attempt to illegally access their networks. Network security has become one of the hottest topics in networking and the trend is likely to continue in the near future and why Cisco has developed the CCNA Security certification specialty.
Chapter 8 – Network Securityfreeccna