Which of the following features do firewalls and router IP ACLs have in common?
A) Match source and destination IP addresses
B) Identify applications by matching well-known TCP and UDP ports
C) Watch application-layer flows for additional TCP and UDP ports
D) Match text in the URI of an HTTP request
E) Keep state information about each packet
A, B
Explanation: A) Firewalls and ACLs share basic functionality, but firewalls are more advanced. Routers and firewalls both examine source and destination IP addresses and look at well-known ports, but only firewalls can do the rest.
B) Firewalls and ACLs share basic functionality, but firewalls are more advanced. Routers and firewalls both examine source and destination IP addresses and look at well-known ports, but only firewalls can do the rest.
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