[asterisk-users] sip attacks
Robert-iPhone
rhuddleston at gmail.com
Sun Jul 31 18:26:17 CDT 2011
hard to equate sip attack to ping performance.. Run mtr for a bit.
Also try tcpdump or wireshark or tethereal.
If you are really paranoid recycle all your passwords
Sent from my iPhone
On Jul 31, 2011, at 7:04 PM, "Dave George" <dgeorge at teletoneinc.com> wrote:
> My asterisk server is getting bogged down every 5 minutes. My ping time is
> going from 60ms to 800 ms and the call quality is bad.
>
> I have fail2ban running and I am using iptables. I have two ip connections
> to the box.
>
> How can I tell if the poor performance is due to sip attacks? I don't see
> any reg attempts in my asterisk cli. I use to get frequent attacks but
> fail2ban seems to be taking care of that.
>
> See how ping time gets worst in a short space of time and server performance
> at the time:
>
>
> 64 bytes from 4.2.2.1: icmp_seq=6 ttl=55 time=87.8 ms
> 64 bytes from 4.2.2.1: icmp_seq=7 ttl=55 time=99.8 ms
> 64 bytes from 4.2.2.1: icmp_seq=8 ttl=55 time=107 ms
> 64 bytes from 4.2.2.1: icmp_seq=9 ttl=55 time=115 ms
> 64 bytes from 4.2.2.1: icmp_seq=10 ttl=55 time=120 ms
> 64 bytes from 4.2.2.1: icmp_seq=11 ttl=55 time=122 ms
> 64 bytes from 4.2.2.1: icmp_seq=12 ttl=55 time=123 ms
> 64 bytes from 4.2.2.1: icmp_seq=13 ttl=55 time=126 ms
> 64 bytes from 4.2.2.1: icmp_seq=14 ttl=55 time=122 ms
> 64 bytes from 4.2.2.1: icmp_seq=15 ttl=55 time=142 ms
> 64 bytes from 4.2.2.1: icmp_seq=16 ttl=55 time=142 ms
> 64 bytes from 4.2.2.1: icmp_seq=17 ttl=55 time=137 ms
> 64 bytes from 4.2.2.1: icmp_seq=18 ttl=55 time=186 ms
> 64 bytes from 4.2.2.1: icmp_seq=19 ttl=55 time=255 ms
> 64 bytes from 4.2.2.1: icmp_seq=20 ttl=55 time=310 ms
> 64 bytes from 4.2.2.1: icmp_seq=21 ttl=55 time=387 ms
> 64 bytes from 4.2.2.1: icmp_seq=22 ttl=55 time=445 ms
> 64 bytes from 4.2.2.1: icmp_seq=23 ttl=55 time=514 ms
> 64 bytes from 4.2.2.1: icmp_seq=24 ttl=55 time=583 ms
> 64 bytes from 4.2.2.1: icmp_seq=25 ttl=55 time=650 ms
> 64 bytes from 4.2.2.1: icmp_seq=26 ttl=55 time=715 ms
> 64 bytes from 4.2.2.1: icmp_seq=27 ttl=55 time=783 ms
> 64 bytes from 4.2.2.1: icmp_seq=28 ttl=55 time=821 ms
> 64 bytes from 4.2.2.1: icmp_seq=29 ttl=55 time=810 ms
> 64 bytes from 4.2.2.1: icmp_seq=30 ttl=55 time=832 ms
> 64 bytes from 4.2.2.1: icmp_seq=31 ttl=55 time=812 ms
> 64 bytes from 4.2.2.1: icmp_seq=32 ttl=55 time=821 ms
> 64 bytes from 4.2.2.1: icmp_seq=33 ttl=55 time=826 ms
> 64 bytes from 4.2.2.1: icmp_seq=34 ttl=55 time=815 ms
> 64 bytes from 4.2.2.1: icmp_seq=35 ttl=55 time=821 ms
> 64 bytes from 4.2.2.1: icmp_seq=36 ttl=55 time=824 ms
>
> top - 19:02:38 up 4 days, 11:26, 4 users, load average: 0.36, 0.75, 0.82
> Mem: 4051312k total, 1062964k used, 2988348k free, 167004k buffers
> Swap: 6094840k total, 0k used, 6094840k free, 680144k cached
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 4245 root 15 0 791m 86m 10m S 39.6 2.2 1192:32 asterisk
> 18280 root 15 0 3812 600 516 S 2.0 0.0 0:59.00 pppoe
> 2582 root 15 0 5912 628 504 S 0.3 0.0 2:02.19 syslogd
> 18978 root 15 0 12744 1096 812 R 0.3 0.0 0:00.02 top
> 1 root 15 0 10352 700 588 S 0.0 0.0 0:01.14 init
> 2 root RT -5 0 0 0 S 0.0 0.0 0:00.01 migration/0
> 3 root 34 19 0 0 0 S 0.0 0.0 0:31.90 ksoftirqd/0
> 4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
> 5 root RT -5 0 0 0 S 0.0 0.0 0:00.01 migration/1
> 6 root 34 19 0 0 0 S 0.0 0.0 0:08.43 ksoftirqd/1
> 7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1
> 8 root RT -5 0 0 0 S 0.0 0.0 0:00.13 migration/2
> 9 root 34 19 0 0 0 S 0.0 0.0 2:40.56 ksoftirqd/2
> 10 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/2
> 11 root RT -5 0 0 0 S 0.0 0.0 0:00.05 migration/3
> 12 root 34 19 0 0 0 S 0.0 0.0 0:44.56 ksoftirqd/3
> 13 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/3
> 14 root 10 -5 0 0 0 S 0.0 0.0 0:00.02 events/0
> 15 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 events/1
> 16 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 events/2
> 17 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 events/3
> 18 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
> 55 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
> 62 root 10 -5 0 0 0 S 0.0 0.0 0:00.07 kblockd/0
> 63 root 10 -5 0 0 0 S 0.0 0.0 0:00.01 kblockd/1
> 64 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/2
> 65 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/3
> 66 root 17 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
> 166 root 17 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/0
> 167 root 18 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/1
>
>
>
> Dave
>
>
>
> --
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