H323 and NAT

Subhendu Ghosh sghosh at SGHOSH.ORG
Mon Jun 18 22:31:19 EDT 2001


They can, just not easily due to the major implementation (NetMeeting) not
having specified ports..

http://openh323proxy.sourceforge.net/


At 09:55 AM 6/19/2001 +0800, Santosh Kadam - Silicon Portals wrote:
>  Hi there,
>
>   I am a new-bird in the VOIP applications , and I would like to clear some
>basic doubts.
>
>   Basically I would like to know, why the H323 clients do not work behind
>the NAT or the proxy network ? I understand that the H323 non compliant
>clients like net2Phone are able to talk to the PC which r behind NAT but the
>H323 compliant applications like netMeeting , I am not able to communicate
>people behind NAT-Proxy network .
>
>   why and what it can be preventing that these applications are not able to
>pass audio behind the NAT?
>
>   Thanks n Regards,
>
>   Santosh Kadam.
>   e-mail: san at siliconportals.com
>
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