RE: Attack attempts from 195.86.128.45

["C.W.L. Hoogenboezem" <root () digitalcraze nl>]

Christian,

As Hamish Stanaway already told you - you're most likely not going to
receive a reply to your e-mail soon, so you might just want to ditch off
the attacks by dropping all packets from this IP, or if you want to take
somewhat more radical precautions, and scans appeared from other than
the host you mentioned in this network, drop the C-class.

You might aswell want to ask yourself the following: what is there on
your machine that they want? Ofcourse you might just be a random target,
but you could look a bit further than that - did you encounter attempts
to compromise your system from this same IP or ISP before?

Summary of actions I would take: 

- Block the address(es) involved;
- Notify abuse@ (you did this already);
- Perform an audit on my system (like Hamish also said);
- Look for potential causes of these attempts to compromise your system.

Best regards,
     Chris Hoogenboezem
     http://w.digitalcraze.nl

-----Oorspronkelijk bericht-----
Van: Christian Stigen Larsen [mailto:csl () sublevel3 org] 
Verzonden: dinsdag 6 mei 2003 19:37
Aan: incidents () securityfocus com
Onderwerp: Attack attempts from 195.86.128.45


Hi all,

we've gotten a lot of attempted attacks from 195.86.128.45, which maps
to kes.wirehub.nl.  I've already notified abuse () nl easynet net, but have
anybode else seen attacks from this ip ?

> From our log:

05/06/2003 12:29:53.048 Sub Seven Attack Dropped 195.86.128.45, 4341,
WAN 195.119.0.181, 6776, DMZ     
05/06/2003 12:35:54.624 Ripper Attack Dropped 195.86.128.45, 3230, WAN
195.119.0.181, 2023, DMZ     
05/06/2003 12:36:18.736 Sub Seven Attack Dropped 195.86.128.45, 1780,
WAN 195.119.0.181, 1243, DMZ     
05/06/2003 12:43:28.928 Sub Seven Attack Dropped 195.86.128.45, 1627,
WAN 195.119.0.181, 6711, DMZ     
05/06/2003 12:52:30.176 Ini Killer Attack Dropped 195.86.128.45, 4690,
WAN 195.119.0.181, 9989, DMZ     
05/06/2003 12:54:06.592 Striker Attack Dropped 195.86.128.45, 1327, WAN
195.119.0.181, 2565, DMZ     
05/06/2003 12:59:22.640 Net Spy Attack Dropped 195.86.128.45, 2570, WAN
195.119.0.181, 1024, DMZ     
05/06/2003 13:25:08.352 Net Spy Attack Dropped 195.86.128.45, 3754, WAN
195.119.0.181, 1024, DMZ     
05/06/2003 13:32:18.144 Striker Attack Dropped 195.86.128.45, 2661, WAN
195.119.0.181, 2565, DMZ     
05/06/2003 13:34:10.352 Ini Killer Attack Dropped 195.86.128.45, 2307,
WAN 195.119.0.181, 9989, DMZ     
05/06/2003 13:42:59.320 Sub Seven Attack Dropped 195.86.128.45, 2832,
WAN 195.119.0.181, 6711, DMZ     
05/06/2003 13:48:29.528 Sub Seven Attack Dropped 195.86.128.45, 1863,
WAN 195.119.0.181, 1243, DMZ     
05/06/2003 13:48:41.544 Ripper Attack Dropped 195.86.128.45, 4230, WAN
195.119.0.181, 2023, DMZ     
05/06/2003 13:52:18.416 Sub Seven Attack Dropped 195.86.128.45, 3498,
WAN 195.119.0.181, 6776, DMZ     
05/06/2003 14:12:09.240 NetBus Attack Dropped 195.86.128.45, 3677, WAN
195.119.0.181, 12345, DMZ     
05/06/2003 14:36:07.608 Priority Attack Dropped 195.86.128.45, 2045, WAN
195.119.0.181, 16969, DMZ     
05/06/2003 15:08:06.576 Priority Attack Dropped 195.86.128.45, 3927, WAN
195.119.0.181, 16969, DMZ     
05/06/2003 15:11:52.048 NetBus Attack Dropped 195.86.128.45, 1756, WAN
195.119.0.181, 12345, DMZ     
05/06/2003 15:14:22.032 NetBus Attack Dropped 195.86.128.45, 3133, WAN
195.119.0.181, 12345, DMZ     
05/06/2003 15:17:39.560 Priority Attack Dropped 195.86.128.45, 2129, WAN
195.119.0.181, 16969, DMZ     
05/06/2003 15:47:12.224 NetBus Attack Dropped 195.86.128.45, 3450, WAN
195.119.0.181, 20034, DMZ     
05/06/2003 15:51:43.192 NetBus Attack Dropped 195.86.128.45, 4064, WAN
195.119.0.181, 20034, DMZ     
05/06/2003 16:38:27.816 Back Orifice Attack Dropped 195.86.128.45, 2249,
WAN 195.119.0.181, 31337, DMZ     
[...]

Plus numerous portscans.

What should I do next, besides wait for a reply?

-- 
Christian Stigen Larsen -- http://sublevel3.org/~csl/ -- mob: +47 98 22
02 15

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