NETWORK SECURITY
PART1: Security at the Network Layer: IPSec IP Security: • IP Security (IPSec) is a collection of protocols designed to provide security for a packet at the network level . • It helps to create authenticated and confidential packets for IP layer. • IPSec supports data integrity, data confidentiality, data origin authentication, and replay protection at n/w level. • IPSec is integrated at the Internet layer; it provides security for almost all protocols in the TCP/IP suite. • Functional areas of IPSec are… ...... 1. Authentication 2. Confidentiality 3. Key Management IPSec Services • Confidentiality ( encryption ) - ensuring that the data has not been read en route • Message integrity - ensuring the data has not been changed by route • Data origin authentication - identifying who sent the data • Anti-Replay