Comments on: Network Address Translation NAT Tutorial

By: Anonymous

Anonymous — Wed, 27 May 2015 12:28:44 +0000

Understood

By: cherymae

cherymae — Sun, 10 May 2015 11:50:31 +0000

please need latest dump…..
xhe2xisme@gmail.com

By: SHAMZZ

SHAMZZ — Wed, 06 May 2015 09:06:49 +0000

VERY NICE EXPLNTIN,,,,,THANKUU

By: mohamed

mohamed — Sun, 29 Mar 2015 15:14:43 +0000

very useful and can clearly understand

By: Ezra Mosomi Epumbi

Ezra Mosomi Epumbi — Wed, 18 Mar 2015 10:01:15 +0000

NIce Stuff

By: Anonymous

Anonymous — Wed, 18 Mar 2015 10:00:40 +0000

Nice stuff mane keep the nice work up!

By: Amit Kumar Pandey

Amit Kumar Pandey — Sun, 01 Mar 2015 19:22:49 +0000

9 tuts is the Greatest of all the blogs and tutorials found over the internet.You have made our CCNA Study so ..sooo easier .I am so happy and tension free now. Thanks all the members of 9 tuts.

By: gustav

gustav — Thu, 12 Feb 2015 08:31:23 +0000

pls need latest dump gustavegbe@yahoo.com

By: xeoboy

xeoboy — Thu, 22 Jan 2015 11:09:07 +0000

thanks IT auditor

By: IT Auditor

IT Auditor — Thu, 15 Jan 2015 00:16:28 +0000

I forgot to say Thank you 9tut for all the help that you’ve given to all aspiring CCNA exam takers. 3 years ago I was one of them. Now I’m on my way to take the CCNA Security. I hope the best for all CCNA Exam takers!

By: luj

luj — Wed, 14 Jan 2015 16:07:22 +0000

thanks a lot guys, may god bless you!! :-)

By: Don79

Don79 — Mon, 05 Jan 2015 08:41:09 +0000

Very Clear and Easy to understand..thanks guys..!!

By: Irvan

Irvan — Mon, 15 Dec 2014 02:54:28 +0000

Thanks

By: Anonymous

Anonymous — Wed, 10 Sep 2014 21:17:25 +0000

wao i realy luv dis am preparin 4 d exam pls any update email: hazzyken@gmail.com

By: Tahir

Tahir — Mon, 11 Aug 2014 06:07:59 +0000

Excellent Explanation……………………

By: Mohd Ashfaq

Mohd Ashfaq — Wed, 18 Jun 2014 10:24:34 +0000

very basic is to understand the nat for bigners amazing

By: Anonymous

Anonymous — Wed, 18 Jun 2014 08:49:31 +0000

really clear the natting concept

By: sacasc

sacasc — Thu, 29 May 2014 17:47:16 +0000

bitches

By: rs

rs — Wed, 28 May 2014 17:47:57 +0000

great explanation but the inside/outside local/global diagram needs to be fixed.. thanks

By: Shaon

Shaon — Sun, 13 Apr 2014 05:48:28 +0000

send me latest dump. I will sit for the exam in this week

By: Adnan W.

Adnan W. — Thu, 27 Feb 2014 20:45:35 +0000

Hey 9tut buddies!
Had anyone taken CCna exam?
Please let me know what sim questions you got?

By: HAMMAD HASSAN

HAMMAD HASSAN — Sun, 23 Feb 2014 15:04:38 +0000

v v informative…thanks

By: vigneshwaran

vigneshwaran — Thu, 23 Jan 2014 06:23:21 +0000

thanx its very useful to me and my friednz..:)

By: RK

RK — Wed, 22 Jan 2014 12:27:59 +0000

Excellent explanation covering all features/problems. Keep it Up :)

By: Anonymous

Anonymous — Fri, 17 Jan 2014 07:39:14 +0000

very clear and easy to understand, thx a lot~

By: ashok gaikwad

ashok gaikwad — Thu, 16 Jan 2014 08:27:10 +0000

nice…….

By: samir

samir — Sun, 22 Dec 2013 09:35:53 +0000

thanks

By: samir

samir — Sun, 22 Dec 2013 09:31:03 +0000

R1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#interface loopback0
%LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
R1(config-if)#ip add 10.55.0.1 255.255.255.0
R1(config-if)#interface loopback1
%LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to up
R1(config-if)#ip add 10.55.1.1 255.255.255.0
R1(config-if)#interface loopback2
%LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback2, changed state to up
R1(config-if)#ip add 10.55.2.1 255.255.255.0
R1(config-if)#interface loopback3
%LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback3, changed state to up
R1(config-if)#ip add 10.55.3.1 255.255.255.0
R1(config-if)#exit
R1(config)#router eigrp 10
R1(config-router)#network 10.55.0.0 0.0.3.255
R1(config-router)#end
R1#

By: samir

samir — Sun, 22 Dec 2013 09:29:37 +0000

!###################################################
!# Free CCNA Workbook Lab 11-2 R3 Initial Config #
!###################################################
!
enable
configure terminal
!
hostname R3
no ip domain-lookup
!
interface Loopback0
description ### SIMULATED INTERNET HOST ###
ip address 4.2.2.2 255.255.255.255
!
interface Serial0/0
description ### PHYSICAL FRAME RELAY INTERFACE ###
encapsulation frame-relay
no frame-relay inverse-arp
exit
!
interface Serial0/0.322 point-to-point
description ### FRAME RELAY LINK TO R2 ###
ip address 171.18.24.2 255.255.255.224
frame-relay interface-dlci 322
exit
!
interface Serial0/0
no shut
exit
!
line con 0
logging sync
no exec-timeout
!
end

By: jojo

jojo — Wed, 24 Jul 2013 20:10:12 +0000

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a small advice if your studying for ccna lab sims only study from 9tut
any questions –mohdjalal0077@gmail.com

By: Shoaib Momand

Shoaib Momand — Mon, 22 Jul 2013 04:12:38 +0000

Really Help full, Simple and meaningful Thank u very much sir

By: S. Dutta

S. Dutta — Sat, 20 Jul 2013 19:33:01 +0000

It’s really helpful, nice job…

By: saymon

saymon — Thu, 18 Jul 2013 06:31:58 +0000

helpful ….

By: Anonymous

Anonymous — Tue, 09 Jul 2013 08:49:13 +0000

gd job

By: tozaa

tozaa — Thu, 27 Jun 2013 17:20:51 +0000

goog job 9tut

By: rahman

rahman — Sun, 16 Jun 2013 21:49:04 +0000

Thank you soo much :)

By: Samer

Samer — Fri, 31 May 2013 08:22:24 +0000

Good Job 9tut

By: ndane

ndane — Fri, 31 May 2013 05:38:51 +0000

This is a very helpful tutorial
thanks to 9tut

By: zeeshan

zeeshan — Tue, 21 May 2013 16:10:48 +0000

thanx this is very helpfull 4 me

By: Red dragon

Red dragon — Mon, 29 Apr 2013 20:53:29 +0000

Thanks tut.com the god bless you

By: lahiru

lahiru — Thu, 11 Apr 2013 16:52:24 +0000

this is very useful for me thank you very much…….

By: tim

tim — Wed, 03 Apr 2013 14:07:59 +0000

@kevin
If you need to open up a port and block others, you need an extended access list.
Give the acl a number from 100-199 and from there you can only allow the port 25. You can then assign this acl to the nat.

By: kevin

kevin — Sat, 23 Mar 2013 15:04:05 +0000

with IP NATing feature, how can I setup a ACL to open port for exchange (port 25)? I setup a simple NATing but I don’t know how to do ACL to allow port 25 to open for Exchange.

By: rehan khan

rehan khan — Tue, 19 Mar 2013 08:30:37 +0000

yes i like your article keep it up????

By: raamia

raamia — Thu, 07 Mar 2013 00:58:14 +0000

nice explaition thanks for all

By: bbbbhhhh

bbbbhhhh — Mon, 14 Jan 2013 13:23:30 +0000

nice explanation

By: sunil dutta

sunil dutta — Mon, 14 Jan 2013 06:44:27 +0000

hi, i have a question, how many days we should prepare for the exam before we go for it. actually i just finished ccna boot camp training three days ago n m planning to write the lab…

By: ginga

ginga — Mon, 07 Jan 2013 12:51:26 +0000

thanks a lot use full help

By: Moneer

Moneer — Mon, 31 Dec 2012 13:59:41 +0000

9tut.com is doing excellent job thank you very much.

By: Muniraj M

Muniraj M — Sat, 22 Dec 2012 17:53:36 +0000

Thank You very good expplaination

By: charith SL

charith SL — Mon, 17 Dec 2012 15:48:36 +0000

Thank u very much Sir…

By: n.muthusaravanakumar

n.muthusaravanakumar — Tue, 27 Nov 2012 04:51:20 +0000

Thanks very much ……..it is very use full for me.

By: Omeiza

Omeiza — Thu, 22 Nov 2012 18:46:21 +0000

Nice writeup.kip it up man

By: kushal arora

kushal arora — Mon, 24 Sep 2012 07:08:05 +0000

@jef
thnx man !

By: jef

jef — Thu, 06 Sep 2012 15:25:49 +0000

@kushal just negate it but be sure to be on the proper interface
ex.
R0#configure terminal
R0(config)#int loopback0
R0(config-if)#ip address 10.0.0.1 255.0.0.0
R0(config-if)#ip nat inside

to negate

R0(config-if)#no ip nat inside

By: kushal arora

kushal arora — Thu, 06 Sep 2012 13:04:09 +0000

how to delete the pool ?

By: Blu Ray

Blu Ray — Thu, 16 Aug 2012 13:23:29 +0000

Thanka
marvellous illustration ;)

By: Muhammad Saeed

Muhammad Saeed — Sun, 12 Aug 2012 09:19:20 +0000

my exam is tom. wish me luck! this site rocks any way! thanks a million!!

By: Prodip

Prodip — Tue, 07 Aug 2012 13:31:26 +0000

Thanks for the explanations ….

By: shlola

shlola — Sun, 05 Aug 2012 08:53:57 +0000

thank u……

By: Bot

Bot — Fri, 03 Aug 2012 03:44:41 +0000

Hi All!

If you are trying to practice NAT on Packet tracer, you can do that using 2 routers and two computers.

Please take note of the numbers in step 1 which tells you the interface.

Steps as Below

1)setup will be laptop1—2router3—-4router5—6laptop.
2)give laptop(1) some 192.168.1.xxx 255.255.255.0and router interface also some (2)192.168.1.xx 255.255.255.0address.

3)after which at (3) IP 67.110.56.112 255.255.0.0 and (4)as 67.110.57.115 255.255.0.0

4)at interface (5) give some ip like 67.120.51.112 255.255.0.0 and for the laptop 67.120.52.115

Please note for the pc give the default gateway as those of router interfaces connected to them.

With this IP address are set, Now we need to set static routes on both the routers so that they can ping each other networks.You can also use rip,EIGRP or OSPF whichever you prefer.

Now, ping from one pc to other to verify connectivity.Once ok our set up is done.

Now comes NAT! Put an access-list on 4router5 as to allow only souce ip of 67.110.x.x
accesslist 3 permit 67.110.0.0 0.0.255.255 and give it to interface (4)router. This will only allow if source ip is 67.110.x.x and not 192.168.x.x .

Now try to ping from the PC it wont allow you!!!Try to ping from the router it allows you as the source add is 67.110.x.x.

Now we configure Nat on 2router3 . at (2) ip nat inside and (3) ip nat outside. we put an accesslist as to allow say anyform to NAT so conft# ip accesslist 3 any any.
and now just write the NAT code ip nat inside source list 3 interface fastEthernet (3)

Now you should be able to ping from one laptop to another. PLS post if you have any doubts

By: VIN

VIN — Wed, 01 Aug 2012 23:06:05 +0000

Thanks for the clear explanation!!! :)

By: shakeel

shakeel — Thu, 26 Jul 2012 07:09:27 +0000

Thanks…really help full

By: manish mano

manish mano — Mon, 23 Jul 2012 09:16:50 +0000

thank u very much 9tut …;;;;:

By: piwang

piwang — Wed, 04 Jul 2012 19:20:42 +0000

The following is incorrect
” last term, outside local address, is a private address of an external device as it is referred to by devices on its local network. You can understand outside local address as the inside local address of the external device which lies at the other end of the Internet.”

You have it correct here
Outside local address – The IP address of an outside host as it is known to the hosts on the inside network.

the Outside local address is the address of the REMOTE host is it appears inside YOUR network after any possible translation. Often this is the same as the Outside Global address but it *does not have to be*! you can NAT going out and coming into a network, for example if you have two networks that you are trying to route between but the use the same IP addressing scheme (say all are on 10.0.0.0/8 or something) we need to NAT both coming and going.

Check here for further study.
http://www.tcpipguide.com/free/t_IPNATAddressTerminology-2.htm

By: Mohamed Nazeem

Mohamed Nazeem — Mon, 02 Jul 2012 03:03:27 +0000

Amazing Explanation!!!

By: Usman Mughal

Usman Mughal — Sun, 01 Jul 2012 05:41:04 +0000

It is relay very help full.

By: aJIT

aJIT — Fri, 29 Jun 2012 03:05:12 +0000

WELL EXPLAINATION

By: RJCCNA:)

RJCCNA:) — Wed, 27 Jun 2012 06:00:07 +0000

Thanks for this you guys awesome :)

By: PRIYANK NEGI

PRIYANK NEGI — Thu, 21 Jun 2012 05:37:38 +0000

THANKS FOR GUIDELINES………………………….

By: Serene

Serene — Wed, 20 Jun 2012 14:42:59 +0000

Hi the video link cannot be opened?

By: Raj

Raj — Sat, 16 Jun 2012 19:55:07 +0000

Very useful…thanx

By: lover

lover — Fri, 15 Jun 2012 11:16:43 +0000

what is your score mustafe ? i think u fail,,

By: lover

lover — Fri, 15 Jun 2012 11:14:43 +0000

i love the tutorial

By: kishore

kishore — Mon, 11 Jun 2012 05:13:54 +0000

outstanding tnx great job!!!!!!!!!!!!!!

By: Mustafe

Mustafe — Sat, 09 Jun 2012 10:16:37 +0000

Thanks for this. Today is my day. I will let you know the score.

By: Vishal T

Vishal T — Wed, 23 May 2012 16:21:06 +0000

Thank You good Explaination !!!!

By: Nusrat Zaidi

Nusrat Zaidi — Tue, 08 May 2012 06:40:13 +0000

Really Great, Simple and Clear Explanation

By: Lalit

Lalit — Fri, 27 Apr 2012 05:53:34 +0000

hi,
going to give ccna xam today……

By: VR

VR — Wed, 25 Apr 2012 21:12:34 +0000

9TUT I love you