The NAT detection must be done by the client, e.g. using STUN. If the client detects symmetric NAT, it has to use the private IP in Via. Thus, the proxy can detect that this client is unable of NAT traversal (using the NAT checks from nathelper)
regards, klaus
Chia Huey Lim wrote:
Is there anyway to test if the UA is from symmetric NAT?
Regards,
Chia
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