Block the ip? You should only enable sip for your specific clients in iptables.
Sent from Samsung Mobile <div>-------- Original message --------</div><div>From: arun kumar <[email protected]> </div><div>Date:27/06/2014 4:42 PM (GMT+02:00) </div><div>To: Asterisk Users Mailing List - Non-Commercial Discussion <[email protected]> </div><div>Subject: Re: [asterisk-users] Attack on Sip server. </div><div> </div>Hi, Change the protocol from tcp to udp in iptables. ~Arun On 27 Jun 2014 20:07, "Anurag Rana" <[email protected]> wrote: Hi All. Someone is attacking on my SIP server. There are lot of requests coming in and I am not able to stop it because I am unable to detect the IP address. I used wireshark to capture the packets. Although I am using very strong password for my SIP users but still is there any way to drop these packets and stop this attack. I tried dropping packet after matching some string (most of the packets from attacker contains string 'VaxSIPUserAgent/3.1' ) but it failed. Packets are still flowing in. iptables -I INPUT 1 -p tcp --dport 5060 -m string --string "VaxSIPUserAgent" --algo bm -j DROP Its something like this Registration from '"30" <sp:30@my_public_ip:5060> failed for '192.168.xxx.xxx:6373' - Wrong Password and there are approx 10 request per minute of this type. Please suggest some way to stop this. -- Anurag Rana http://newbie42.blogspot.in/ On the trampoline of life's experiences, Striving towards a saintly life in the midst of these materialistic turbulences. -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
-- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
