Firewall and ICMP

Question 1

What are the 3 ICMP types for a basic network test?

Answer 1

Type 1, Type 8 and Type 3

in other words
request, reply, unreachable

Question 2

FIrewalls limit damage that could spread from ___ ______ __ another

Answer 2

one subnet to another

Question 3

2 types of logical access control policies

Answer 3

1. Role based access control
2. Rule based access control (admins define rules governing data access and resources)

Question 4

Name this: Mapping an IP address to another by modifying the network address info in the IP header of the packet, while in transit a gateway

Answer 4

Network Address Translation (NAT)

Question 5

An application of NAT that redirects communication requests from one address/port combination to another (while in transit)

Answer 5

Port Address Translation (PAT), also called port forwarding