Re: [asterisk-biz] PBX got Hacked

On Tue, Mar 10, 2009 at 7:15 AM, Trixter aka Bret McDanel <trixter@0xdecafbad.com> wrote:

On Tue, 2009-03-10 at 04:52 -0400, voip-asterisk@maximumcrm.com wrote:
> Of course everyone running Asterisk can get 3 humans to monitor the logs
> 24/7 for the signs of an attack.
>

well if they do it right they dont have to do that, but that does make a
good argument of why no one should monitor their logs ever, oh wait no
it doesnt.

> Has anyone actually seen an attack with spoofed IPs anyways?

yes, several in fact.  I even wrote a program that would "smurf" from
asterisk and other platforms which relied on spoofed IPs to get the
asterisk box to send data to the victim IP, so I am fairly certain that
such things do exist.

--
Trixter http://www.0xdecafbad.com     Bret McDanel
pgp key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8AE5C721

I think nat=yes mitigates these security risks (and makes things MUCH easier to configure and maintain.)

Logic seems sound and I have never had any issues with remote or local phones, so I still vote nat=yes becomes the default.

http://www.mail-archive.com/asterisk-users@lists.digium.com/msg214006.html

--
Thanks,
Steve Totaro
+18887771888 (Toll Free)
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