Hi, Install fail2band and change sip listen port to avoid attack
With regards N.Prakash ------------------------------ From: Anurag Rana <anuragrana31...@gmail.com> Sent: 27-06-2014 08:07 PM To: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users@lists.digium.com> Subject: [asterisk-users] Attack on Sip server. 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.
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