Network Appliances

Question 1

A […] is used to access secure network zones from the outside. SSH into the […], and from there you can SSH into company resources / servers

Answer 1

Jump Server

Question 2

A […] sits between the users and the external network, and sends and receives requests on the users behalf.

Answer 2

Proxy Server

Question 3

Explicit Proxy VS Transparent Proxy

Answer 3

An explicit proxy needs to be configured on the application or OS you are using

A transparent proxy automatically makes requests on the users behalf without any configuration needed (invisible)

Question 4

An example of a network level proxy is called […], and modifies the IP address that is used to make a request.

Answer 4

NAT Network Address Translation

Question 5

A […] is used to protect and control users access to the internet

Answer 5

Forward or Internal Proxy

Question 6

A […] is used when users on the internet want to access a server of yours, but you don’t want them directly interacting with it.

Answer 6

Reverse Proxy

Question 7

An […] is managed by a third party and is a security concern.

Answer 7

Open Proxy

Question 8

A […] distributes traffic across multiple of the same server to reduce stress on the network. Also adds fault tolerance

Answer 8

Load Balancer

Question 9

Active/Active VS Active/Passive Load Balancing

Answer 9

In Active/Active, all servers are utilized at the same time

In Active/Passive, not all servers are being used by the load balancer. If an active server goes down, the load balancer will begin using a passive one.

Question 10

[…] are used to aggregate information from network devices, and may be built into the device itself, (Switches, Routers, Servers, Firewalls), or it’s own separate device, (IPS, IDS, Logs). This information is then sent to a central device called a […] (SIEM)

Answer 10

Sensors / Collector