2.4 - Summarize services provided by networked hosts Flashcards by Unknown Unknown

What is a server?

2.4 - Summarize services provided by networked hosts

Device that provides services to connected devices

How well did you know this?

Not at all

Perfectly

What do DNS servers maintain?

2.4 - Summarize services provided by networked hosts: Server Roles - DNS Server

Records to perform their functions

Mapping hostnames to IP addresses, routing emails to correct email servers, etc.

How well did you know this?

Not at all

Perfectly

How are devices configured as DNS servers?

2.4 - Summarize services provided by networked hosts: Server Roles - DNS Server

via DHCP servers or by manually configuring them

How well did you know this?

Not at all

Perfectly

What does it mean that DNS is a distributed naming system?

2.4 - Summarize services provided by networked hosts: Server Roles - DNS Server

Responsibilties for managing DNS requests may be shared among multiple DNS servers

Responsibilities are shared if more than 1 DNS server is used

How well did you know this?

Not at all

Perfectly

Where is a DHCP server likely running in a home network?

2.4 - Summarize services provided by networked hosts: Server Roles - DHCP Server

router or modem

How well did you know this?

Not at all

Perfectly

What is a networked device?

2.4 - Summarize services provided by networked hosts

Device that can connect to a computer network

i.e. router, phone, switch, hub, printer, server, computer, etc.

How well did you know this?

Not at all

Perfectly

Meaning of SMB?

2.4 - Summarize services provided by networked hosts: Server Roles - Fileshare (File Servers)

Server Message Block

How well did you know this?

Not at all

Perfectly

File server that Windows uses?

2.4 - Summarize services provided by networked hosts: Server Roles - Fileshare (File Servers)

SMB

How well did you know this?

Not at all

Perfectly

Where is server software installed on & why?

2.4 - Summarize services provided by networked hosts: Server Roles

Server computers to perform server functions

How well did you know this?

Not at all

Perfectly

Meaning of NAS?

2.4 - Summarize services provided by networked hosts: Server Roles - Fileshare (File Servers)

Network-Attached Storage

How well did you know this?

Not at all

Perfectly

What are NAS servers?

2.4 - Summarize services provided by networked hosts: Server Roles - Fileshare (File Servers)

Type of file servers that connects directly to the network & has 1 or more storage drives

Storage drives like HDDs or SSDs

How well did you know this?

Not at all

Perfectly

for small environments, how can file servers be enabled?

2.4 - Summarize services provided by networked hosts: Server Roles - Fileshare (File Servers)

Via file sharing on PCs

How well did you know this?

Not at all

Perfectly

How are printers connected to the network?

2.4 - Summarize services provided by networked hosts: Server Roles - Print Server

Via print server

How well did you know this?

Not at all

Perfectly

What do print servers enable users to do?

2.4 - Summarize services provided by networked hosts: Server Roles - Print Server

Share access to the centralized printer

centralized resource being a printer

How well did you know this?

Not at all

Perfectly

What do print servers manage?

2.4 - Summarize services provided by networked hosts: Server Roles - Print Server

Network print queue for printers

How well did you know this?

Not at all

Perfectly

A single server may be used to provide…?

2.4 - Summarize services provided by networked hosts

multiple server tasks

i.e acting as a file & printer server

How well did you know this?

Not at all

Perfectly

What is syslog?

2.4 - Summarize services provided by networked hosts: Server Roles - Syslog

Protocol that sends system logs to central logging server/collector

System logs are event messages

How well did you know this?

Not at all

Perfectly

Why would syslog be used?

*Used by network devices, server,s OSs, & apps

2.4 - Summarize services provided by networked hosts: Server Roles - Syslog

To log events, errors, & warnings

How well did you know this?

Not at all

Perfectly

How can Windows use syslog

2.4 - Summarize services provided by networked hosts: Server Roles - Syslog

Via third-party software

Windows doesnt natively support syslog

What kind of pages can web servers build?

Example of web server is Microsoft’s IIS (Internet Information Services)

2.4 - Summarize services provided by networked hosts: Server Roles - Web Servers

Static & dynamic pages

How do web servers send static pages?

2.4 - Summarize services provided by networked hosts: Server Roles - Web Servers

By directly sending it to the browser

How do web servers send dynamic pages?

2.4 - Summarize services provided by networked hosts: Server Roles - Web Servers

By creating the page & then sending it to the browser

Meaning of AAA?

2.4 - Summarize services provided by networked hosts: Server Roles - AAA

Authentication, Authorization, & Accounting

What do Authentication servers in AAA do?

2.4 - Summarize services provided by networked hosts: Server Roles - AAA

Verifies a user’s identity

via authentication

Orgs may use authentication servers to provide a centralized method of authetnication across different servers

What do Authorization servers in AAA do? ## Footnote 2.4 - Summarize services provided by networked hosts: **Server Roles - *AAA***

Grants access to resources based on predefined permissions

What do Accounting servers in AAA do? ## Footnote 2.4 - Summarize services provided by networked hosts: **Server Roles - *AAA***

Tracks user actions | To provide evidence of unauthorized actions

What do Anti-spam appliances do? | aka spam gateway apliances ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Spam Gateways***

Filters spam emails & instant messages on a network

Meaning of UTM? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *UTM***

Unified Threat Management

What is a UTM? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *UTM***

Device or software that consolidates network & security features | features like firewall, antivirus, content inspection, antispam, etc. ## Footnote UTMs can be a specialized appliance or installed on a VM running cloud services

Meaning of IDS? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *UTM***

Intrusion Detection Systems

Meaning of IPS? (Not IPS LCD) ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *UTM***

Intrusion Prevention Systems

What are IDS & IPS used for? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *UTM***

To detect & thwart unauthorized access to a network

What role does IDS do? & IPS? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *UTM***

IDS alerts admin, IPS tries to thwart it

What do load balancers do? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Load Balancers***

Distribute network traffic evenly across multiple servers & removes unresponsive servers

Why do load balancers route client requests to servers in a uniform fashion? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Load Balancers***

To ensure no server is overloaded or idle

2 load balancing algorithms? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Load Balancers***

- Round-robin - Least connections

How does Load balancer's *least connections* algorithm work? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Load Balancers***

Sends new client requests to the server with the least concurrent connections

Where are load balancers typically placed on a network? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Load Balancers***

Between client devices & the servers to be balanced

What does a proxy server act as? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Proxy Servers***

An intermediary between its users & the resources they request

3 things proxy servers can do? ## Footnote 2.4 - Summarize services provided by networked hosts: **Internet Appliances - *Proxy Servers***

- Monitor usage - Control access to content - Enhance performance

3 devices used to block access to a system or network? ## Footnote 2.4 - Summarize services provided by networked hosts

- Firwalls - UTMs - IDS & IPS

What are legacy/embedded systems? ## Footnote 2.4 - Summarize services provided by networked hosts

Specialized devices designed for specific tasks ## Footnote i.e. ATM, washing machine controllers, thermostats, MP3 players, Traffic light controllers, SCADA, etc.

What are IoT devices? ## Footnote 2.4 - Summarize services provided by networked hosts: **IoT Devices**

Devices that connect to a network to exchange data | i.e. network like the Internet ## Footnote i.e. Fitness Tracker, Connected Refrigerator, Smart home lighting, smart thermostat, smart locks, etc.

Meaning of SCADA? ## Footnote 2.4 - Summarize services provided by networked hosts: *Legacy/Embedded Systems - **SCADA***

Supervisory Control And Data Acquisition

What do SCADA systems do? ## Footnote 2.4 - Summarize services provided by networked hosts: *Legacy/Embedded Systems - **SCADA***

Manage industrial machines by controlling their functions in real-time | i.e. HVAC systems, gas/oil pipelines, traffic systems, etc.

Why may legacy systems be hard to maintain? ## Footnote 2.4 - Summarize services provided by networked hosts

Due to outdated software/hardware that may not be well-supported