From the course: CompTIA Security+ (SY0-601) Cert Prep: 8 Network Security Design and Implementation
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Firewall rule management
From the course: CompTIA Security+ (SY0-601) Cert Prep: 8 Network Security Design and Implementation
Firewall rule management
- [Instructor] Network firewalls play a crucial role in an organization's overall security posture. They protect the perimeter of the network, blocking any traffic that is not explicitly authorized on the network. Firewalls keep potential attackers at bay, limiting the possibility that they will gain unauthorized access to a protected network. The basic function of firewall is quite simple. Each time someone outside the protected network attempts a new connection into the protected network, the firewall consults a list of rules maintained by the administrator. If it finds a rule that matches the description of the attempted connection, it then follows the action specified by that rule. If the firewall doesn't have instructions for the situation, it follows the default deny principle and blocks the traffic. For example, we might have a firewall rule base for a simple network that contains these three rules. First it allows…
Contents
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Restricting network access2m 8s
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(Locked)
Network access control4m 30s
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(Locked)
Firewall rule management4m 9s
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(Locked)
Router configuration security4m 5s
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(Locked)
Switch configuration security3m 42s
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(Locked)
Maintaining network availability2m 34s
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(Locked)
Network monitoring3m 41s
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(Locked)
SNMP2m 54s
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(Locked)
Isolating sensitive systems1m 58s
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(Locked)
Deception technologies2m 51s
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