[4eyes] SSH service on 128.111.28.94 port 2222

Tue Jul 13 16:31:18 PDT 2010

The problem has been located and terminated. Thanks...

From: Matthew Turk [mailto:mturk at cs.ucsb.edu] 
Sent: Tuesday, July 13, 2010 2:59 PM
To: 'ilab-users at lists.cs.ucsb.edu'
Subject: SSH service on 128.111.28.94 port 2222 
Importance: High

Everyone in the trailer:

There seems to be an issue with SSH coming from a machine in the trailer
with an IP address of 128.111.28.94 - DHCP, so it's probably a laptop. Is
anyone doing anything special with SSH on port 2222?

Please check the IP address of your machine and let me know if it's
128.111.28.94.

Thanks,

            Matthew

From: Andreas Boschke [mailto:andreas at cs.ucsb.edu] 
Sent: Tuesday, July 13, 2010 2:56 PM
To: Matthew Turk
Subject: Re: [COMS #30394] Re: [UCSB-OIT #252085] SSH service on
128.111.28.94 port 2222 

Hi Matthew:

It seems to be from the trailer. 

-Andreas

On Jul 13, 2010, at 2:40 PM, Matthew Turk wrote:

Andreas,

Do you know if this is from Trailer 932 or from the Foglab (in Elings Hall)?

            Matthew

From: Andreas Boschke [mailto:andreas at cs.ucsb.edu] 
Sent: Tuesday, July 13, 2010 11:10 AM
To: Matthew Turk; Tobias Hollerer
Subject: Fwd: [COMS #30394] Re: [UCSB-OIT #252085] SSH service on
128.111.28.94 port 2222

Hi Matthew and Tobias:

In the Ilab, IP 128.111.28.94 from the DHCP pool is having SSH trouble.

Would you please ask if the user is doing anything special with SSH on PORT
2222? 

Thanks, 

-Andreas 

REF:

=

Starting Nmap 5.21 ( http://nmap.org ) at 2010-07-13 11:09 PDT

Nmap scan report for ilab-94.cs.ucsb.edu (128.111.28.94)

Host is up (0.00052s latency).

Not shown: 995 closed ports

PORT     STATE SERVICE

22/tcp   open  ssh

139/tcp  open  netbios-ssn

445/tcp  open  microsoft-ds

2222/tcp open  unknown

4445/tcp open  unknown

=

Begin forwarded message:

From: "security at ucsb.edu via CS Support" <support at cs.ucsb.edu>

Date: July 13, 2010 10:01:17 AM PDT

Subject: [COMS #30394] Re: [UCSB-OIT #252085] SSH service on 128.111.28.94
port 2222 

Reply-To: support at cs.ucsb.edu

Tue Jul 13 10:01:17 2010: Request 30394 was acted upon.

Transaction: Ticket created by security at ucsb.edu

       Queue: General

     Subject: Re: [UCSB-OIT #252085] SSH service on 128.111.28.94 port 2222

       Owner: Nobody

  Requestors: security at ucsb.edu

      Status: new

 Ticket <URL: https://rt.cs.ucsb.edu/Ticket/Display.html?id=30394 >

I think we know the answer by now.

81.218.143.158 has been null-routed for the attack.

Thanks,

-- 

Igor Shabaltas

Campus Network Programmer

University of California, Santa Barbara

<igor.shabaltas at ucsb.edu> (805) 893-7939

Greetings support at cs.ucsb.edu,

Could you confirm that SSH service on 128.111.28.94 port 2222 is started by
the user on purpose?

Host name is ilab-94.cs.ucsb.edu, MAC address - 000c2973eeb7,

location - most likely bldg.489 (TB-Sycamore).

noc$ nc 128.111.28.94 2222

SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu3

^C

noc$ date

Tue Jul 13 09:29:12 PDT 2010

There is someone out there who is probably (as it looks to me) running a
slow-pace dictionary attack against this box/service (and another three
systems on campus, same port) or, for unknown reason, repeatedly (last night
every 6 or so mins) trying to connect to the box. Here is a short traffic
sample:

Start             SrcIPaddress    SrcP   DstIPaddress    DstP  P  Fl Pkts
Octets

0713.07:41:44.341 81.218.143.158  35784  128.111.28.94   2222  6  2  2
120

0713.07:41:44.339 81.218.143.158  36453  128.111.145.6   2222  6  2  2
120

0713.07:41:44.351 81.218.143.158  46575  128.111.40.225  2222  6  2  2
120

0713.07:41:44.337 81.218.143.158  46865  128.111.127.36  2222  6  3  13
1212

0713.07:47:58.148 81.218.143.158  50653  128.111.145.6   2222  6  2  2
120

0713.07:47:58.167 81.218.143.158  48479  128.111.40.225  2222  6  2  2
120

0713.07:47:58.148 81.218.143.158  54523  128.111.127.36  2222  6  2  2
120

0713.07:47:58.164 81.218.143.158  42976  128.111.28.94   2222  6  3  12
1152

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