firewalls
Post on 19-Mar-2017
6 Views
Preview:
TRANSCRIPT
Firewalls
Firewall??????
Firewall is anything hardware or software that can filter transmission of packets of digital information as they attempt to pass the boundary of the network
Roles of Firewall
• Packet filtering allow or deny packet transfer
• Application Proxy proxy for applications
Super Roles!!!• Logging • VPN services• Authentication• Shielding Hosts• Caching
Shielding Hosts
Authentication
Logging
Caching
VPN services
Terminologies• Protected Network• Un-protected network• Demilitarized zone• Dual Homed Firewall• Proxy• NAT• Stateful Packet Filtering• Policy • Rule Set• Allowed Traffic• Illegal Traffic• Rejected Traffic• Security Associations
top related