No single security package is ever going to be perfect for everything.
In order to obtain an optimum level of protection, one should always use
multiple avenues of security. For example, to help mitigate INVITE
attacks, I actually ban them directly via my Asterisk dialplan. In the
past 56 days, it's blocked 190 IPs. One of the most important things
anyone can do is ensure that their system is as secure and locked down
as possible. The vast majority of VoIP related attacks are simple
drive-by brute force ones. With so many open and easily compromised
systems out there, unless an attacker is specifically targeting you,
basic 'best practices' (ie: complex secrets, locking down remote access,
limiting unnecessary international destinations, etc.) will stop almost
all of them.
According to that URL you gave, it looks like Digium has put in a fix in
version 11 to help tools like fail2ban block these attacks as well.
--James
On 05/03/2013 11:09 PM, Ionel Chila wrote:
Just an interesting read, I am not making any suggestions or anything
like that :)
http://forums.asterisk.org/viewtopic.php?f=13&t=78988
Regards
Ionel Chila
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