[asterisk-users] Attack problem

[Muhammad Nuzaihan Kamalluddin]

netstat -anp |grep 6667

Best Regards,
Muhammad Nuzaihan Kamal
Network Consultant
Mobile: +65 97473874

Asfa Systems Pte Ltd
91, Alps Avenue. #03-10. Singapore 498787

Tel:  +65 62538211
Fax: +65 62504814
www.asfasystems.com.sg

pub   4096R/36630777 2010-07-10
      Key fingerprint = 670A 4D60 0A2D 43A1 2FE0  DFDA D3A9 3F32 3663 0777
uid                  Muhammad Nuzaihan Kamalluddin (Asfa Systems Pte. Ltd.) <muhammad at asfasystems.com>
sub   4096R/97E5CBBD 2010-07-10



On 20-Dec-2010, at 5:40 PM, Khaled W. Chehab wrote:

> Ircd  is not installed and cant be located in all system ,any one know or
> have an idea how do they infect my system,
> Any bug in asterisknow?
> How to find the script that initiates this invites ?
> 135.307281 192.168.138.56 -> 218.75.79.17 TCP 36578 > ircd [ACK] Seq=36
> Ack=111 Win=5840 Len=0
> 135.307434 192.168.138.56 -> 218.75.79.17 TCP 36578 > ircd [FIN, ACK] Seq=36
> Ack=111 Win=5840 Len=0
> 135.309188 218.75.79.17 -> 192.168.138.56 TCP ircd > 36578 [FIN, ACK]
> Seq=111 Ack=1 Win=4096 Len=0
> 135.309211 192.168.138.56 -> 218.75.79.17 TCP 36578 > ircd [ACK] Seq=37
> Ack=112 Win=5840 Len=0
> 135.334037 192.168.138.56 -> 192.168.5.2  DNS Standard query A
> irc3.mysteryaddict.com
> 135.334496  192.168.5.2 -> 192.168.138.56 DNS Standard query response A
> 87.229.45.226
> 135.334657 192.168.138.56 -> 87.229.45.226 TCP 53718 > ircd [SYN] Seq=0
> Win=5840 Len=0 MSS=1460 TSV=1532274 TSER=0 WS=7
> 135.342359 218.75.79.17 -> 192.168.138.56 TCP ircd > 42802 [SYN, ACK] Seq=0
> Ack=1 Win=1460 Len=0 MSS=1380
> 135.342399 192.168.138.56 -> 218.75.79.17 TCP 42802 > ircd [ACK] Seq=1 Ack=1
> Win=5840 Len=0
> 135.342554 192.168.138.56 -> 218.75.79.17 IRC Request
> 
> Regards
> 
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of A J Stiles
> Sent: Friday, December 17, 2010 6:20 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Attack problem
> 
> On Friday 17 Dec 2010, Khaled W. Chehab wrote:
>> HI,
>> 
>> My system been attacked from someone I guess, kindly check the link 
>> below
>> 
>> How can I stop the ircd attack
> 
> # /etc/init.d/ircd stop
> # chmod -x  /etc/init.d/ircd
> 
> Should do the business  :)
> 
> --
> AJS
> 
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