[asterisk-users] Failed to authenticate device 100
motty.cruz at gmail.com
Thu Dec 3 10:57:03 CST 2015
I have security enable,
; output security messages to the file named "Security"
security => security
I see the file created in /var/log/asterisk/security but is empty, and
in /var/log/asterisk/messages I see the following:
[2015-12-03 06:52:32] NOTICE chan_sip.c: Failed to authenticate
device 100<sip:100 at X.X.X.X>;tag=a121ab55
X.X.X.X is the IP of my Server, I don't know who is the attacker IP
unless I monitor for the server using the following command:
tcpdump -lni eth0 -f "udp port 5060"
On 12/02/2015 01:53 PM, Telium Technical Support wrote:
> The details of the source IP are available in the asterisk security
> log (if you have that enabled) – but that particular attack hides its
> address from the messages file.
> It’s essential that you secure your PBX; there are options ranging
> from free to commercial. Have a look at:
> It’s easy to get a $20,000 phone bill, so take securing your PBX
> *From:*asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] *On Behalf Of *Motty
> *Sent:* Wednesday, December 02, 2015 1:12 PM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion;
> motty.cruz at gmail.com
> *Subject:* [asterisk-users] Failed to authenticate device 100
> Hello, I continued to see this errors in the logs:
> [2015-12-02 10:05:57] NOTICE: chan_sip.c:23277
> handle_request_invite: Failed to authenticate device
> 100<sip:100 at xx.xx.xx.xx> <mailto:sip:100 at xx.xx.xx.xx>;tag=10cdeaf7
> how do I guard against this kinds of attacks? Also, to get the IP
> address from where this attack come from I use the following command
> "tcpdump -lni eth0 -f "udp port 5060" is there an easy way to get the
> attacker's IP?
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