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FIREWALL (firwall architecture (screened subnet architecture (network…
FIREWALL
firwall architecture
dual homed host architecture
pc connectivity
secured firewall
build around a dual homed host computer
screened subnet architecture
enquires two network interface
resides from host to host and dual homed
resides on the perimeter of the network
screened subnet architecture
network exposed to external network but patially securedd with firewall
service network/perimeter network
external network -DMZ screen subent ,LAN
subnet in DMZ that is attack to a firewall
functions
block invalid packets
restrict incoming and outgoing traffic by ip address ports or users
firewall locations
internal LAN and external networks
gateways of sensitive subnetworks
vulnabilities of a firewall
stooping information flow/leakage
compete protection against instructions
purpose of firewall to control between internal network
devices connectivity between internal and external network
to implement and enforce security policy of communications between network