SIP Registration Hack Attempt - How to guard against?*RSLVD*

1. Brekeke Product Name and version:
Brekeke Sip Server 2.x
2. Java version:
Jre 1.6
3. OS type and the version:
Centos 5.6
4. UA (phone), gateway or other hardware/software involved:
N/A
5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/ ... terns.html :
Enterprise
6. Your problem:

Brekeke Community,

Crazy situation.. So we had a hack attempt this morning...The
HeartBeat kept failing on a production server we have traffic on due to a SIP registration hack attempt originating from China. It has been blocked.

My question is do to the ever-growing attempts/attacks like this, how could we better protect ourselves moving forward against hackers like this? I saw the heartbeat go down 3 times till this was found and issue fixed early this morning.

Please advise. Thank you.



Kent C.

http://wiki.brekeke.com/wiki/Avoid-attacks

Also you can set trusted IP addresses in the router.
If you are using unix-like OS (e.g. Linux), tune the iptables to define trusted IP addresses.

https://isc.sans.edu/port.html?port=5060
There are many attacks to the port-5060 everyday.

Thank you for all the advice! I will save for the future since I didn't have a gameplan when this happened.