IPv6 is a better protocol than IPv4 for today's Internet for several reasons: 1) It has a 128-bit address space providing an enormous number of addresses, eliminating the risk of running out that exists with IPv4. This is enough addresses to assign each atom on Earth while having additional addresses remaining. 2) It has built-in security features like IPSec that were initially designed for IPv6, making it safer than IPv4 over the Internet where hackers can potentially access any system. 3) It supports seamless mobility so a user can roam while connected applications are unaware, seeing the user always at their home address.

1. IPv6
Why it is a better protocol than IPv4?

2. IPv6 Designed
for the Internet
of today
IPv4 was designed for a
private networks in the
late 70s

3. 128 bit Addresses!
This a huge number!
No chance to exhaust it
Enough to address each
atom of Earth and do 4
more Earth
Fred Bovy
fred@fredbovy.com

4. Plug and Play
No more configuration
on the end nodes.
IPv6 is plug-and-play
Configuration is
performed on routers
and servers

5. Safer
Internet today is fully opened to
hackers who are the Internet
Owners. They can get through
any firewall and do whatever
they want!
If the Network Designers follow
the IETF recommendations
most end nodes SHOULD run
IPSec
IPSec was initially designed for
IPv6

6. No More NAT needed!
Peer-to-Peer which was a key driver for the migration
to TCP/IP in the 80s was killed by NAT.
It is not more insecure without NAT if you implement
Statefull Firewall at the Edge of your Network and only
allow IPSec traffic to get in!
Anyway you will also need to implement Host based
firewalls on each system talking to the Internet

7. Text
IPv6 header is Simpler and more Powerfull
Some fields have been removed from the basic
header and/or replaced by an Extension header

8. IPv6 is Simpler & Powerfull
No more need for an IPv6 header Checksum as link
are more and more reliable and datalink provides a
CRC Checking.
The Option fields have been replaced by a daisy chain
of Extension headers.
It gives flexibility as new application can create new
Extensions Headers

9. IPv6 Mobility
You login in the morning
from home and while
you are roaming, you
never have to reconnect
your applications.
!
Remote Application see
you at home all the time

10. Installed as the
default protocol
on most platforms
Linux, Windows and
MAC OS for the
workstations, HP and
other for the printers
and so on…

11. Fred Bovy
fred@fredbovy.com