Gatekeeper and Net Meeting

Posted on 2009-07-13
Last Modified: 2013-12-04
Hi All,

Engineering users have a need to allow net meeting connections in bound to one computer on the network for demonstrating software installed on it, this is ok - however I do not wish to open permanently the net meeting ports and would prefer to use a H.323 proxy in the DMZ to simplify authentication / management and improve security.

Net meeting is a strict requirement of the software being used on this computer and cannot be substituted, unfortunately. I am however recommending software called Team Viewer instead which is currently going through testing.

I need help in the following areas:

1.      A network diagram of a H.323 configuration
2.      Where H.323 hardware can be purchased from?
3.      What is reliable and trustworthy H.323 software?
4.      What are the best practises for deploying H.323?
5.      My research is telling me H.323 is not widely used anymore, with net meeting at least, your thoughts?
6.      Does anyone have experience with net meeting remotely?


Question by:AI-SYD
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Author Comment

ID: 24844757
Can i get some assistance on this question, possibly needs rezoning

Author Comment

ID: 24845628


The only time Request Attention appears for me is when another member posts on the question, is it supposed to be available all the time?
LVL 37

Accepted Solution

bbao earned 500 total points
ID: 24846061
> 1. A network diagram of a H.323 configuration

an example is here:,MSDN.10).gif

source: IP Telephony with TAPI 3.0 -

> 2. Where H.323 hardware can be purchased from?

VoIP dealers and resellers?

> 3. What is reliable and trustworthy H.323 software?

are you talking about the definition of H.323 compatible software, or looking for some particular brands and models?

> 4. What are the best practises for deploying H.323?

see below for your reference.

Server Considerations for NetMeeting

Microsoft NetMeeting Features and System Requirements

> 5. My research is telling me H.323 is not widely used anymore, with net meeting at least, your thoughts?

H.323 is a set of framework protocols defined by ITU-T in order to provide audio/video communication sessions over a packet network.

in my understanding, the full set of H.323 is complicated and not easy, or not efficient, or even not necessary, to be implemented in varied commercial products. but, as a standard interface between heterogeneous voice and videoconferencing systems, it has been widely implemented by the relevant equipment manufacturers on the market, not only software vendors like MS and Skype, but also hardware vendors such as Cisco and Avaya.

so basically, H.323 is still alive.

> 6. Does anyone have experience with net meeting remotely?

IMHO, in your scenario, it seems that you no need to research H.323 in such an academic approach. you may just install NM3 and let it work.

NM3 communication can go through a firewall, if the firewall is well-configured. please see the following MSKB for more detailed information. according to my experience, this is the most efficient approach.

How to Establish NetMeeting Connections Through a Firewall

FYI - Microsoft NetMeeting Features and System Requirements

if you are really not happy touching a firewall, you may consider building an ILS directory service for NM3 communication. you may also use those ILS servers that are still available on the internet. Google it if you like:

ILS stands for Internet Locator Server, can be considered as a bridge between two NM3 clients which are all sitting  their private network behind the firewall.

FYI - Internet Locator Server

hope it helps,

Author Closing Comment

ID: 31602729
Great thanks for the information. I needed confirmations.

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