You have recently taken over the security of a mid-sized network. You are reviewing the current
configuration of the IPTables firewall, and notice the following rule:
ipchains -A input -p TCP -d 0.0.0.0/0 12345 -j DENY
What is the function of this rule?

A.
This rule for the output chain states that all incoming packets from any host to port 12345 are to
be denied.

B.
This rule for the input chain states that all incoming packets from any host to port 12345 are to
be denied.

C.
This rule for the input chain states that any TCP traffic from any address destined for any IP
address and to port 12345 is to be denied.

D.
This rule for the output chain states that any TCP traffic from any address destined for any IP
address and to port 12345 is to be denied.

E.
This rule for the input chain states that all TCP packets inbound from any network destined to
any network is to be denied for ports 1, 2, 3, 4, and 5.