<div dir="ltr"><span style="font-size:12.8px">Thanks for the suggestions of using TLS or changing the port. I changed the port, but some routers are still able to mess with the SIP headers. I would have used TLS, if not for two reasons:</span><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">1. ICE protocol was originally designed for UDP according to RFC5245, and it seems to work better with UDP.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">2. The SIP servers I have used (OpenSIPS and Repro) seem to be more stable with UDP compared to TLS (they do not randomly drop connections, throw unusual errors in the logs, etc.)</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">I may try TLS again, but it would be better if there is an alternative workaround for UDP.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 2 May 2016 at 13:33, Patrick Wakano <span dir="ltr"><<a href="mailto:pwakano@gmail.com" target="_blank">pwakano@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Using TLS!</div><div>Also configuring your systems/devices to use other port than 5060 may do the trick...</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Mon, May 2, 2016 at 9:14 AM, Nabeel <span dir="ltr"><<a href="mailto:nabeelshikder@gmail.com" target="_blank">nabeelshikder@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><p dir="ltr">Hi, </p>
<p dir="ltr">Other than using rtpproxy/NAThelper modules, is there any way to bypass/workaround SIP ALG enabled on many WiFi routers? Although SIP ALG was designed to help with NAT, in most cases it does the opposite and breaks SIP. </p><span><font color="#888888">
<p dir="ltr">Nabeel </p>
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