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On 26/12/14 01:42, Joseph wrote: |
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> On 12/25/14 16:43, Bill Kenworthy wrote: |
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>> On 25/12/14 15:43, Joseph wrote: |
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>>> I've installed "zoiper" (this is an softphone app to connect to my |
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>>> Asterisk server) on my old phone and it works on my private network over |
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>>> wifi. |
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>>> I'm using standard IAX port 4569 to register, so this port is open on my |
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>>> firewall. |
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>>> |
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>>> But when I catch an open public wifi network in a Mall or a Tim Horton |
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>>> "zoiper" failed to register. |
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>>> |
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>>> Do they block outgoing ports of public WiFi networks? What are my |
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>>> alternatives? |
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>>> |
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>>> I can open any port on my DD-Wrt and redirect it to my Asterisk server. |
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>>> |
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>> |
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>> Quite often happens in this part of the world. I run an openvpn ssl vpn |
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>> on port 443 with an ssl multiplexor on the server end - route all the |
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>> voip traffic through the vpn. Doesnt work well if bandwidth is really |
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>> constrained but its the difference between having at least something or |
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>> nothing at all. |
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>> |
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>> BillK |
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> |
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> I do run VoIP over vpn but that is between two points on cable |
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> connection and it works very well. But running vpn over wifi plus VoIP |
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> will not work very well if at all. Voice will be very choppy. |
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|
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Not necessarily - it depends on bandwidth at both ends (my server is on |
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adsl.) The important point is port 443 and ssl for the VPN which gets |
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past all blocking I have encountered so far though I have not noticed |
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deep packet inspection using MITM yet. I am using self signed certs so |
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it should show up if its attempted. |
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|
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What I have encountered is excessive latency on some open WIFI networks |
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that makes voice conversation unpleasant. |
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