Presentations PGP

8/8/2019 Presentations PGP

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Workshop on Internet Technologies

NAPOLEON S.Team Lead Tech Support / QA

FatPipe Networks India Ltd


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Country skill Rankings (NASSCOM)

IT DatabaseIT DatabaseDevelopmentDevelopmentandand

AdministrationAdministration

RDBMSRDBMSConceptsConcepts

SQL (ANSI)SQL (ANSI)FundamentalsFundamentals

MS SQL ServerMS SQL Server20002000ProgrammingProgramming

DB2DB2ProgrammingProgramming

Oracle PL/SQLOracle PL/SQL

India 48%India 48%

USA 22%USA 22%

Romania 4%Romania 4%

RussianRussian

Federation 3%Federation 3%

Ukraine 3%Ukraine 3%

India 60%India 60%

USA 14%USA 14%

RussianRussian




India 33%India 33%

USA 32%USA 32%


RussianRussian



India 71%India 71%

USA 18%USA 18%

Philippines 1%Philippines 1%


United KingdomUnited Kingdom

(Great Britain)(Great Britain)

1%1%

India 50%India 50%

USA 20%USA 20%

RussianRussian



United KingdomUnited Kingdom

(Great Britain) 3%(Great Britain) 3%


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ITITprogrammingprogrammingandand

DevelopmentDevelopment

C#C# Software TestingSoftware Testing C++C++ Java 2Java 2FundamentalsFundamentals

.Net Framework.Net Framework

USA 29%USA 29%

India 22%India 22%RussianRussianFederationFederation9%9%Ukraine 8%Ukraine 8%UnitedUnitedKingdomKingdom

(Great(GreatBritain) 6%Britain) 6%

India 71%India 71%

USA 11%USA 11%Ukraine 4%Ukraine 4%Belarus 2%Belarus 2%Pakistan 1%Pakistan 1%

India 22%India 22%

USA 20%USA 20%RussianRussianFederation 17%Federation 17%Ukraine 10%Ukraine 10%United KingdomUnited Kingdom(Great Britain) 6%(Great Britain) 6%

India 58%India 58%

USA 14%USA 14%RussianRussianFederation 5%Federation 5%Ukraine 4%Ukraine 4%Romania 3%Romania 3%

India 47%India 47%

USA 19%USA 19%RussianRussianFederation 6%Federation 6%Ukraine 6%Ukraine 6%Romania 5%Romania 5%


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IT systems andIT systems andNetworkNetworkAdministrationAdministration

LinuxLinuxAdministrationAdministration(General)(General)

MS WindowsMS WindowsServer 2003Server 2003AdministrationAdministration

NetworkingNetworkingConceptsConcepts

UnixUnixAdministrationAdministration(Solaris 9)(Solaris 9)

InformationInformationTechnologyTechnologySecuritySecurity

FundamentalsFundamentals

USA 22%USA 22%

India 16%India 16%RussianRussianFederation 9%Federation 9%Ukraine 7%Ukraine 7%Romania 6%Romania 6%

USA 37%USA 37%

India 19%India 19%RussianRussianFederation 6%Federation 6%Ukraine 4%Ukraine 4%Romania 3%Romania 3%

USA 34%USA 34%

India 17%India 17%Ukraine 6%Ukraine 6%RussianRussianFederation 5%Federation 5%United KingdomUnited Kingdom(Great Britain)(Great Britain)

4%4%

India 37%India 37%

USA 27%USA 27%RussianRussianFederation 5%Federation 5%Canada 3%Canada 3%United KingdomUnited Kingdom(Great Britain)(Great Britain)

3%3%

USA 33%USA 33%

India 12%India 12%Ukraine 6%Ukraine 6%Poland 5%Poland 5%RussianRussianFederation 4%Federation 4%


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Computer Networking -What?

A group of computers and devices

interconnected by communications channelsthat facilitate communications among users

and allows users to share resources.

Wired Networks

Wireless Networks


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ComputerCommunication -How?

Channel

Protocol Connection

method

Address


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Communication Types

Unicast

Multicast

Broadcast


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Wired Networks (Ethernet Basics)

Intended RecipientSender





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Ethernet

CSMA/CD Carrier Sense Multiple Access

Collision Detection


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Enterprise Redundant Network


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Data Centre Structured cabling


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Wireless Networks (Wi Fi)

CSMA/CA Carrier Sense Multiple Access

Collision Avoidance


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Typical wireless Campus Network


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Wired Vs Wireless

Installation Moderate difficulty easier, but beware

interferenceCost Less High

Reliability High Un-reliable

Performance Very High Limited

Mobility Limited Outstanding

Security Secured Signals can be

easily intercepted


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IPv4: -192.168.0.1/24(xxxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx)

IPv4 uses 32-bit (4-byte) addresses, which limitsthe address space to 429,49,67,296 (2^32)possible unique addresses.

Private IP Addresses, Public IP Addresses.

IPv4 Address Shortage News:http://www.networkworld.com/news/2010/061710-ipv4-addresses.html

[ The remaining pool of unallocated IPv4 addresses could be depleted early asDecember due to unprecedented levels of broadband and wireless adoption intheAsia Pacific region, experts say. ]

IP Addressing


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IPv4 Address

Class First Octet

Bits

First Octet

Range

Usage Private IP Address

Range

A 0xxxxxxx 1 - 127 Global 10.0.0.0-

10.255.255.255 (/8)

B 10xxxxxx 128 - 191 Global 172.16.0.0-

172.31.255.255 (/16)

C 110xxxxx 192 223 Global 192.168.0.0-192.168.255.255 (/24)

D 1110xxxx 224 239 Multicast

E 1111xxxx 240 255 Research


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IPv6 Addressing:

IPv6: -3ffe:0501:0000:0000:0260:0000:fe40:efab/64.

3ffe:0501::0260:0000:fe40:efab/64 3ffe:0501::0260:0:fe40:efab/64

3ffe:501:260:0:fe40:efab/64

The address size is increased from 32 to 128

bits.

340,282,366,920,938,463,463,374,607,431,76

8,211,456 Address space.


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ARP Address Resolution Protocol

ARP is a protocol used by the Internet protocol,

to map IP address to the hardware addressesused by a data link protocol.

ARP Table:

Internet Address Physical Address Type

10.2.0.1 00-1b-21-5b-e5-be dynamic


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LAB:1 (IP Addressing / ARP)

Configure a PC with IP Address. Verify the Communication between PCs using

PING Command.

Verify the ARP table


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DHCP: Dynamic Host ConfigurationProtocol

The Dynamic Host Configuration Protocol

(DHCP) is an Internet protocol for automatingthe configuration of computers that use

TCP/IP. DHCP can be used to automatically

assign IP addresses.


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Message Description

Discover A client broadcasts to recognize servers.Offer Server responds with proposal of parameters.

Request The client broadcasts to the preferable server.

An implicit deny to others.

Ack The server assigns an IP Address.

Nak The server rejects the request from the client.

Decline The client found a problem with assigned IP

Address.

Release The client returns the assigned address before

its lease expires.

DHCP Message Type


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LAB:2 (DHCP)

Configure a DHCP server on the firewall.

Connect clients to obtain IP Address fromDHCP Server.

Use ipconfig /release, ipconfig /renew

command to see if the clients are able to

release their lease and renew.


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IP Routing:

IP Routing is used to determine the path that

data follows in order to travel across multiplenetworks from its source to its destination.

Routes packets from one Network to another

Network.

Static or Dynamic.


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Routing -Multiple Hops


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LAB 3: IP Routing

Trace route to www.google.com to see multiple

hops. Configure a linux system as a router, and verify

how routing works.

Enable and Disable the routing and verify the

Routing Operations. Do tcpdump and see how packet is routed.

Verify the routing tables.


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NAT: Network Address Translation

Mapping one set of IP Addresses for internal

traffic to a second set of addresses for externaltraffic.

Shortage of Public IP Addresses.

Private IP Addresses are not routable over

internet.


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NAT - PAT

Source NAT: Translation of the source IP

address and/or source port is called source NATorSNAT

Destination NAT: Translation of the destination

IP address and/or destination port number is calleddestination NAT orDNAT


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LAB 4: (NAT - PAT)

Configure a Firewall with Private IP address on

LAN and Public IP Address on WAN and checkhow the traffic from LAN network is NAT ed by

Default on WAN.

Policy based NAT: Configure an Inbound orOutbound policy and see how SNAT and

DNAT works.


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OSI Layers: Open System

Interconnection


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OSI Layers


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LAB 5: (OSI Layers Explained)

Connect to www.news.google.com

Explain how OSI model integration occurswhile browsing a web site.

Use Netstat, ipconfig, sessiontab to

demonstrate the OSI integration.


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DNS: Domain Name Service

An Internet service that translates Domain

names into IP addresses. Because domainnames are alphabetic, they're easier to

remember while IP addresses are numeric.


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LAB 6: DNS Cache on Local system

ipconfig /displaydns, ipconfig /flushdns.

Hosts file lookup Lookup to a DNS Server, nslookup for

www.google.com and www.rediff.com

Explain the purpose of multiple IP Address for

a single domain.


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LAB 7: DNS Record Creation

Configure DNS Records for a Domain.

do nslookup and explain how DNS lookup andload Balancing works.


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LAB 8: Web ServerConfiguration

Configure an web server using IIS and build a

sample web site and download some samplefiles. (http://www.weightlossforall.com/). Do

tcpdump and see how HTTP transfer works.


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LAB 9: FTP serverConfiguration

Configure an FTP server using IIS and build a

sample FTP site. ftp.weightlossforall.com

Explain Active FTP, Passive FTP file transfer.


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VPN: Virtual Private Network


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VPN:


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VPN: A typical Network Setup


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VPN : A typical VPN Setup


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VPN: What is VPN?

A virtual private network (VPN) is a networkthat uses a public telecommunicationinfrastructure, such as the Internet, to provideremote offices or individual users with secureaccess to their organization's network.

Adds security to the communication byencrypting the actual data traffic at the sendingside and decrypting at the receiving end.


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VPN: How VPN(IPSec) Works?


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LAB 10: VPN(IPSec) Configuration

Configure a VPN tunnel and explain how

phase1 and phase2 is established.

Use tcpdump to verify the encapsulated secure

payload(ESP) added to the traffic.


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Summary: Workshop on Network

Technologies

Network Types.

IP Addressing, ARP. IP Routing, NAT - PAT.

DHCP, DNS.

OSI Layers. Web Server, FTP Server.

VPN Encryption.


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Workshop on Internet Technologies

Questions

??


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Thank You!

[email protected]

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