Nahh - strictly VoIP, I can't afford one of those cards. I have
spoken with the same guy several more times today and was unable to re-
create the issue so I will just forget it happened.
Thanks for your reply.
On 11-Feb-09, at 1:53 PM, Bruce N wrote:
Hello,
I am guessing you are using a TDM card (e.g. zap lines.) and
probably have echo issues and maybe just hearing your own voice
back. But as for as the profanity goes then it's probably some other
person :) It is also possible that your actual Bell Canada (or
whoever the provider is) line is picking up other lines and then you
need a Bell technician to check the lines.
If your logs don't show anything and have a strong root password
then I doubt anyone tapping into your lines.
-Bruce
> From: [email protected]
> To: [email protected]
> Date: Wed, 11 Feb 2009 11:52:56 -0500
> Subject: [on-asterisk] Man in the middle?
>
> Occasionally whilst in a call with one individual client - his
> sentences will repeat two or three times.
> The call quality is spectacular however it almost sounds like
there is
> someone in the middle of the call who is messing with me.
> I believe he is using an iPhone on the Rogers network.
> At one point I heard what I thought were foul obscenities (which did
> not sound like him) - this is freaking me out...
> Is it possible to perform some type of MITM attack on an open 5060
> port? Could it be someone with my 201 sip secret who is
> simultaneously registering with my box?
>
> I checked sip show peers during the call (which reported my cisco
> phones IP) and watched sip set debug - didn't appear as if anything
> odd was happening.
>
> I am a bit worried about this, what should I do to determine whether
> it is an attack or just an issue with my system? Like I said, I only
> experience it with one client only.
>
>
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