But do you see an excessive amount of SIP messages coming to your server? On Jun 26, 2015 6:22 PM, "Eric Ni" <xyangni@gmail.com> wrote:
Thanks. I have tried this. But today it happen again. When I killed freeswith process and restart it, everything back to normal. So it does seem to be a DOS attack now. Or restarting fs won't make any difference.
On Sat, Jun 13, 2015 at 1:04 AM, Stanislav Sinyagin <ssinyagin@gmail.com> wrote:
here are iptables rules which do a simple rate limiting for SIP messages, probably this helps: https://txlab.wordpress.com/2013/06/29/protecting-a-vpbx-from-dos-attacks/
On Sat, Jun 13, 2015 at 1:46 AM, Eric Ni <xyangni@gmail.com> wrote:
Hi,
I am using FreeSWITCH Version 1.4.18+git~20150312T185523Z~4eed221b69~64bit (git 4eed221 2015-03-12 18:55:23Z 64bit) on ubuntu 14.04, Linode VPS. It has been working fine for about 2 months. But recently it stopped working with CPU rate above 95% for several times. SIP client got 408 timeout error. I have to login system to kill the process and start over again. Then it back to normal for a period. Checked the log file, it seem to be a sudden stop. Nothing special before the stop and completely no log starting from the issue. May I ask how I should handle this issue? Thanks.
Regards, Eric
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