There aren't any implications. The -nonat switch just simply tells FreeSWITCH to discover for an UPnP enabled NAT gateway so it can forward ports dynamically via that API. If you choose to open up ports the manual way then having that -nonat switch enabled doesn't make much of a difference. What is important however is that you set up your ext_rtp_ip and ext_sip_ip's correctly in your Sofia SIP profile. Examples of a very good value in ext_rtp_ip and ext_sip_ip is stun:stun.freeswitch.org On Sun, Aug 5, 2012 at 8:53 AM, Bzzz <lazyvirus@gmx.com> wrote:
On Sun, 05 Aug 2012 23:10:06 +0800 ocset <ocset@the800group.com> wrote:
What are the implications of using the -nonat flag when starting FreeSWITCH? When should it be used?
I have started FreeSWITCH with -nonat and it registers with my external VOIP gateway (Pennytel) and users can make calls using the external sip profile. Clients outside of my network are not able to see or register with FreeSWITCH which is expected behaviour.
What am I missing in terms of functionality because of disabling NAT?
I think you have the answer in the question; if your server is directly connected to the Internet AND it is also known as your Internet address, then 'nonat' is logic, but if it is not the case (behind a FW&|router for example) it must know its external address as well (so no 'nonat':)
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