Building a Linux IPv6 DNS Server Project review PPT v3.0 First review

Compiled by Linux Lovers Team Guided by Shankar S. M.E Academic Project Review

Topics of Discussion

Introduction

Project Scheduled

About Kernel Compilation

About DNS Configuration

Conclusion

Introduction

Project Scheduled

Conclusion

Born on December 1998

IPv6 is a new layer 3 protocol which will supersede IPv4

Formerly called as SIP, SIPP

Major changes in IPv6 are the redesign of the header, including the increase of address size from 32 bits to 128 bits

IPv6 – A Quick Tour

IPv6 Features

Increased address space

128 bits = 340 trillion trillion trillion addresses

(2 128 = 340,282,366,920,938,463,463,374,607,431,768,211,456)

= 67 billion billion addresses per cm 2 of the planet surface

Hierarchical address architecture

Improved address aggregation

More efficient header architecture

Neighbor discovery and autoconfiguration

Improved operational efficiency

Easier network changes and renumbering

Simpler network applications (Mobile IP)

Integrated security features

IPv6 Addresses

Example

3ffe:3700:0200:00ff:0000:0000:0000:0001

This can be written as

3ffe:3700:200:ff:0:0:0:1 or

3ffe:3700:200:ff::1

0 bits 31 Ver IHL Total Length Identifier Flags Fragment Offset 32 bit Source Address 32 bit Destination Address 4 8 24 16 Service Type Options and Padding Time to Live Header Checksum Protocol Existing System - IPv4 Header Removed Changed

0 31 Version Class Flow Label Payload Length Next Header Hop Limit 128 bit Source Address 128 bit Destination Address 4 12 24 16 Proposed System -IPv6 Header

Supported RFCs for our project

RFC1886: DNS extension for IPv6

RFC2373: IPv6 addressing architecture

RFC2428: FTP extensions for IPv6 & NATs

RFC2452: IPv6 MIB: TCP

RFC2463: ICMP for IPv6

RFC2464: IPv6 over ethernet

RFC2466: IPv6 MIB: ICMP

RFC2553: Basic socket API for IPv6

Introduction

Project Scheduled

Conclusion

Our Project Scheduled

Module 1

Study about Linux.

Kernel Compilation and Creation of Batch Work.

Module 2

Study about DNS And BIND.

DNS Configuration Settings.

Module 3

Sockets for connection between IPv4 and IPv6.

Construction of java code with Swing and testing.

Our Discussion

Introduction

Project Scheduled

Conclusion

Why Compile a Kernel?

Optimization

"Lower" memory footprint

Speed, compiled for your hardware

Additional drivers

Enabling additional features (security patch for example)

Use a more recent kernel than prebuilt kernels (for example, an RC version)

Obtaining and Extracting the Kernel

Download the source from:

http://www.kernel.org/pub

http://carroll.aset.psu.edu/pub/linux/kernel

Extracting the sources

cd /usr/src; tar xvfj linux-kernel-2.4.2.tar.bz2

Programs for Configuration

Screenshot - menuconfig

Building the Kernel

Kernel

# make dep -> dependency check

# make clean -> parameter check

# make bzImage -> Extracting Kernel image

Modules

# make modules -> configuring modules

# make modules_install -> installing modules

Installing the Kernel

New kernel is in arch/i386/boot, copy it somewhere

(i.e. /boot/vmlinux-KENRELVERSION)

Copy System.map to /boot/System.map-KERNELVERSION

ln -s /boot/System.map-KERNELVERSION

/boot/System.map

GRUB: Add to /boot/grub/menu.lst

title RedHat Linux Enterprise 3 GNU/Linux, kernel 2.4.8

root (hd0,0)

kernel /boot/vmlinuz-2.6.8 root=/dev/hda1 ro

Screen shots –kernel Compilation

Introduction

Project Scheduled

Conclusion

DNS in Nut Shell

DNS is the Domain Name System

It translates (or "maps" as the jargon would have it) from name to address and from address to name, and some other things.

Allow machines to be logically grouped by name Domains

Provides email routing Information

Forward Lookup

Hostname into IP address

Reverse Lookup

IP address into Host Name

DNS Server Functions

Internet Domain Support

- Accessing servers through remote network

Local Name Resolution

- Resolve the hostnames of systems on your LAN

Internet Name Resolution

- Most often used for this is the ISP's DNS servers

Graphical Representation DNS Configuration

Name Server Hierarchy

Master Name Server

Contains the master copy of data for a zone.

Slave Name Server

Provides a backup to the master name server.

Caching Name Server

Provides a backup of queries and answers

DNS upside-down tree structure

Service Profile :DNS

Type : System V-Managed Service

Packages : bind, bind-utils

Daemons : named, rndc

Script : named

Ports : 53(domain), 953(rndc)

Configs : /etc/named.conf,

/var/named/*

/etc/rndc.*

DNS Startup

# Service named start

- Starting the named service

# Service named stop

- Stoping the named service

# Service named restart

- Restarting the named service

# Chkconfig named on

- Starting at the time of boot

Configuring BIND

BIND –Berkeley Internet Name Domain

Widely used DNS server on the Internet

Red Hat Enterprise Linux uses BIND 9

Maintained by ISC( Internet Software Consortium)

Default Configuration file in BIND is /etc/named.conf

DNS TOOLS

Debugging tools

named-checkconf,

named-checkzone

DNS lookup tools

nslookup

dig

The Bottom Line Of the Project Mission Critical Server Server clients

Screen Shots of Named.conf file

Screen Shots of db.card.com

Screen Shots - DIG

Screen Shots -Module IPV6

Screen Shots Name Resolution

Introduction

Project Scheduled

Conclusion

Conclusion

IPv6 is a key cutting Edge Technology

Top 4 th Technology all around the world

Source: (EFY Magazine December 2005)

Top 6 th Technology from Computer Networks

Source: Network Magazine

Long-term solution, Scalable, Reliable, Manageable

Secure and High-performance IP networks.

Questions?

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Building a Linux IPv6 DNS Server Project review PPT v3.0 First review

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