Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


3 posts

Wannabe Geek

# 143906 30-Apr-2014 23:42
Send private message

I've been asked for my opinion about a network that has all its equipment on a public IP range (ie no NAT) whether they should go for adding NAT to the mix to help security (there's a pretty good firewall). IMHO NAT was useful about a decade ago as a security option, but nowadays it adds nothing much apart from unneeded complications. I'd be interested in second opinions. . . .

Create new topic
3344 posts

Uber Geek


  # 1034421 30-Apr-2014 23:47
Send private message

NAT is a hack.  In a way, I guess so are Firewalls... but I digress.  There's no good reason to NAT for "security" reasons.  If you have a correctly configured firewall, that is quite sufficient.

19282 posts

Uber Geek
Inactive user

  # 1034424 1-May-2014 00:00
Send private message

No just have a good firewall



755 posts

Ultimate Geek

  # 1034473 1-May-2014 08:18
One person supports this post
Send private message

1) Find out that they own a /8 address space
2) Put NAT in and sell public IP range
4) Profit $$$

...and if that fails, as people said above there's no reason to NAT.

[Amstrad CPC 6128: 128k Memory: 3 inch floppy drive: Colour Screen]

2547 posts

Uber Geek

  # 1034520 1-May-2014 09:09
Send private message

Not for security, no, waste of time.

72 posts

Master Geek

  # 1034523 1-May-2014 09:10
Send private message

only reason to use NAT is if you have more devices than you have IP addresses, otherwise its just adding processing overhead for nothing.

2691 posts

Uber Geek

Lifetime subscriber

  # 1034543 1-May-2014 09:29
Send private message

NAT blocks requests from the outside world by default.  Specific pinholes in the NAT allow specific traffic in.

A firewall can easily be mis-configured.

Think Onion.  Layers of protection.

"4 wheels move the body.  2 wheels move the soul."

“Don't believe anything you read on the net. Except this. Well, including this, I suppose.” Douglas Adams

157 posts

Master Geek

  # 1034822 1-May-2014 14:03
Send private message

When NZ at least become IPV6, NAT will go i history as rudimentary technology. As for now you can use it if you want to free some IP's. It's improve security a bit (by blocking by default income connections) by price of complexity (port forwarding, port-triggering, etc). But any good firewall does this anyway, so why bother?


463 posts

Ultimate Geek

  # 1034869 1-May-2014 15:08
Send private message

johnr: No just have a good firewall

Just have an average firewall and get someone good to configure and maintain it.

I've seen very expensive firewalls rendered useless by muppets who had no clue what they were doing.


3 posts

Wannabe Geek

  # 1034924 1-May-2014 15:47
Send private message

gjm: 1) Find out that they own a /8 address space
2) Put NAT in and sell public IP range
4) Profit $$$

Selling is an option, but I understand that you can't trade in them (except if you're called Microsoft). Do you know of anyone in the nz space that has successfully sold/purchased blocks, and the amount?

157 posts

Master Geek

  # 1034927 1-May-2014 15:54
Send private message

This could be additional cost for every external ip. Getting rid of expenses is almost a profit :)

Create new topic

Twitter and LinkedIn »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

Ring launches indoor-only security camera
Posted 23-Jan-2020 17:26

New report findings will help schools implement the digital technologies curriculum content
Posted 23-Jan-2020 17:25

N4L to upgrade & support wireless internet inside schools
Posted 23-Jan-2020 17:22

Netflix releases 21 Studio Ghibli works
Posted 22-Jan-2020 11:42

Vodafone integrates eSIM into device and wearable roadmap
Posted 17-Jan-2020 09:45

Do you need this camera app? Group investigates privacy implications
Posted 16-Jan-2020 03:30

JBL launches headphones range designed for gaming
Posted 13-Jan-2020 09:59

Withings introduces ScanWatch wearable combining ECG and sleep apnea detection
Posted 9-Jan-2020 18:34

NZ Police releases public app
Posted 8-Jan-2020 11:43

Suunto 7 combine sports and smart features on new smartwatch generation
Posted 7-Jan-2020 16:06

Intel brings innovation with technology spanning the cloud, network, edge and PC
Posted 7-Jan-2020 15:54

AMD announces high performance desktop and ultrathin laptop processors
Posted 7-Jan-2020 15:42

AMD unveils four new desktop and mobile GPUs including AMD Radeon RX 5600
Posted 7-Jan-2020 15:32

Consolidation in video streaming market with Spark selling Lightbox to Sky
Posted 19-Dec-2019 09:09

Intel introduces cryogenic control chip to enable quantum computers
Posted 10-Dec-2019 21:32

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.