Reply
N/A
Posts: 0
Registered: ‎2007-10-27

NAT Filtering: Secured vs. Open

WPN824v1, Firmware rev. V2.0.120_1.0.15

Either this or the last firmware update have dropped in a new configuration option.

Within my Advanced->WAN setup, it offers new radio buttons:

NAT Filtering: o Secured o Open

I understand most of NAT, but what could this be doing? Is it enforcing that data can only be backchanneled to a system who originated the data first? There is no explanation for it in the WPN824 manual (which doesn't list this option at all), and the on-screen description for it is vague.
Regular Contributor
Posts: 89,285
Registered: ‎2009-01-27

Re: NAT Filtering: Secured vs. Open

http://en.wikipedia.org/wiki/Network_address_translation
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June Mizoguchi-
N/A
Posts: 0
Registered: ‎2007-10-27

Re: NAT Filtering: Secured vs. Open

jmizoguchi wrote:
http://en.wikipedia.org/wiki/Network_address_translation


I understood most of that already. The question is what is meant by "secured" and "open".

I'm assuming that "open" doesn't mean the wikipedia "basic nat" where an external IP is required for each LAN side system. I was assuming that port translation would occur either way, no?

The reason I'm questioning this new "feature" of the router is that for some reason, and I believe it to be since this was added, others cannot get to my system when I run it as a unreal tournament game server. This used to work fine with port forwarding directly to my static ip. It stopped working, but there seems to be several things going wrong at once that day, requiring me to get a new modem.

So what does secured mean? Port translation? What does open mean? No port translation? Confused.
Initial Contributor
Posts: 2
Registered: ‎2007-12-03

Re: NAT Filtering: Secured vs. Open

tgm1024 wrote:
I understood most of that already. The question is what is meant by "secured" and "open"...


The MOD either doesn't know the product to know it's a new feature or didn't read your full post because that was a less than adequate response.

My WGR814 v6 has been hosed with port forwarding to a static IP since the latest firmware I've updated to (v2.0.19_1.0.19NA) and its predecessor.

I also cannot connect to Vista computers via Remote Assistance anymore now. Same story with firmware.

I will change to Open mode (whatever that is:rolleyesSmiley Happy and see if that fixes my RDP port forward. Won't be able to test the Vista situation soon but I wanted you to know you're not alone in this.
Highlighted
Initial Contributor
Posts: 2
Registered: ‎2007-12-03

Re: NAT Filtering: Secured vs. Open

Changing from Secured to Open opened my static port forward.
Changed it back to Secured and still using my static port forward.

I suppose you have already-tried changing its setting just to 'register' the new firmware's feature, in case the flash didn't do so?
Regular Contributor
Posts: 110
Registered: ‎2012-10-31

Re: NAT Filtering: Secured vs. Open

NAT Filtering

This option determines how the router deals with inbound traffic. The Secured option provides a secured firewall to protect the PCs on LAN from attacks from the Internet, but it may cause some Internet games, point-to-point applications, or multimedia applications not to work. The Open option, on the other hand, provides a much less secured firewall, while it allows almost all Internet applications to work.
- readynas & readydata fixer
Initial Contributor
Posts: 2
Registered: ‎2012-10-12

Re: NAT Filtering: Secured vs. Open

kossboss wrote:
NAT Filtering

This option determines how the router deals with inbound traffic. The Secured option provides a secured firewall to protect the PCs on LAN from attacks from the Internet, but it may cause some Internet games, point-to-point applications, or multimedia applications not to work. The Open option, on the other hand, provides a much less secured firewall, while it allows almost all Internet applications to work.


The above is quoted straight from the User Manual.

I'd also like to know what the difference is between Secured and Open NAT Filtering, and what is a "much less secured firewall" as referred to above? Some specifics would be nice.
Esteemed Contributor
Posts: 2,024
Registered: ‎2011-05-23

Re: NAT Filtering: Secured vs. Open

This thread was 5 years old. The OP and others involved have most likely moved on. Isn't it better to start your own thread?
Initial Contributor
Posts: 2
Registered: ‎2012-10-12

Re: NAT Filtering: Secured vs. Open

Yes, only realised that just after I posted. My question is still valid though.

I did manage to find a bit of info by 'Googling' the question, but a reply from someone from Netgear would be great. The User Manual glosses over quite a few topics I'd like further information on.

Cheers.
Esteemed Contributor
Posts: 2,024
Registered: ‎2011-05-23

Re: NAT Filtering: Secured vs. Open

judanini wrote:
...a reply from someone from Netgear would be great...

This is a user-to-user forum only, where people try to share their experiences and help each other. This is not Customer Support and we don't work for Netgear.

You are obviously looking for an official answer from Netgear. You will not find that here. For that you will have to open a case with Netgear.

Please also read the "Sticky Thread" on Thread Hijacking.
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