[Freeswitch-users] FreeSWITCH on Raspberry Pi - OpenVPN gateway, B2BUA

[Peter Steinbach]

Hello William,

I will try to, if I'll find the time. Currently the Raspberry went to a
home office of a colleague, so I will have to set up a new one. It's
ordered already.

Best regards
Peter



On 03/26/13 15:53, William King wrote:
> This is an interesting project. Could you document this, and post the
> relevant configs into a github repo?
>
> William King
> Senior Engineer
> Quentus Technologies, INC
> 1037 NE 65th St Suite 273
> Seattle, WA 98115
> Main:   (877) 211-9337
> Office: (206) 388-4772
> Cell:   (253) 686-5518
> william.king at quentustech.com
>
> On 03/26/2013 02:52 AM, Peter P GMX wrote:
>> For those who might be interested:
>>
>> During the last days we built a B2BUA based on Freeswitch and Raspberry
>> PI Ver B which connects to a central server via OpenVPN in order to
>> encrypt voice traffic and circumvent NAT issues. We plan to use it
>> during travelling and to have VPN access in the home office. The costs
>> for this are relatively low (~75$).
>>
>> We installed
>>
>>   * Raspbian
>>   * Freeswitch compiled native from GIT (this really takes a while)
>>   * OpenVPN
>>   * Dnsmasq for eth1 side
>>   * isc-dhcp-server for eth1 side
>>   * tftpd-hpa for eth1 side
>>   * a second LAN interface eth1 was done by a Delock USB 2.0 to LAN
>>     interface (about 20$), works out of the box
>>   * iptables firewall for NAT traversal
>>
>>
>> This worked pretty well. We were not sure beforehand, whether the USB to
>> LAN interface would work nicely, but in fact it did.
>>
>> CPU usage during a single call is
>> top - 10:47:34 up 39 min,  1 user,  load average: 0,64, 0,40, 0,24
>> Tasks:  70 total,   1 running,  69 sleeping,   0 stopped,   0 zombie
>> %Cpu(s):  6,5 us, 12,1 sy,  0,0 ni, 64,9 id,  0,0 wa,  0,0 hi, 16,5 si, 
>> 0,0 st
>> KiB Mem:    448776 total,    94656 used,   354120 free,    13096 buffers
>> KiB Swap:   102396 total,        0 used,   102396 free,    42464 cached
>>
>>   PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
>>  2785 root      -2 -10 28328  14m 4844 S   5,3  3,2   0:30.45 freeswitch
>>  2651 root      20   0  5800 3052 1848 S   3,0  0,7   0:07.73 openvpn
>>  3051 pi        20   0  5096 1256  968 R   0,7  0,3   0:01.97 top
>>
>> 4 GB CF card was about 75%. Codec was G711.
>> The load was mainly generated by the USB-to-LAN adapter. Maybe someone
>> has a better solution for this?
>>
>> At the end we were impressed, how easy this was to set up.
>> So now we have an easy VPN-Router/B2BA which allows us to
>>
>>   * connect a PC somewhere and tunnel all traffic via VPN
>>   * connect a SIP phone somewhere and tunnel all VoIP traffic via VPN
>>
>>
>> We did this with an OpenWRT Box before, but this is much more easy to
>> handle.
>>
>> Best regards
>> Peter
>>  
>>
>>
>>
>> _________________________________________________________________________
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>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
> 
>
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>
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-- 
With kind regards
Peter Steinbach 

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