[Freeswitch-users] Suspicious Incoming Calls

[Jude Mukundane]

Hello Deepika,

This is common for anyone running FS in the cloud with discoverable ports.
Lots of people just run scripts that crawl the internet in search of SIP
servers. After getting one they try bogus invites to try and see if they
can get calls through - if your server is forwarding to PSTN, you could end
up with a bill in thousands of dollars in minutest. In my case, I use a
simple IP Table in Ubuntu (more like an access control list) to define
allowed and non allowed IPs.

Can someone please elaborate on a measure that inolves config level
security because blocking out masses is not goot Internet Citizenry.

Jude

On Sat, Feb 6, 2016 at 2:24 PM, Deepika Yadav <deepikay at iiitd.ac.in> wrote:

> Hi,
>
> I have microsip installed in my windows configured for one or two SIP
> accounts for different Freeswitch servers. I am receiving a call from
> 2022 at myPublicIP repeatitively even if I disconnect from all the accounts,
> these Freeswitch servers are hosted at cloud machine.
>
> Is it a case of hacking the servers. What measures should I take to secure
> both my servers and system.
>
> Regards,
> Deepika
>
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