Gentoo Archives: gentoo-server

From: Jean Blignaut <jean@×××××××.biz>
To: gentoo-server@l.g.o
Subject: RE: [gentoo-server] portscanning worm?
Date: Fri, 20 Jan 2006 14:35:36
Message-Id: B31C4776605A3840B544482E1A94C5C92DEC95@eagle.birds
1 Got feedback from the firewall guy:
2 According to his snort logs the ip I was told did the portscan was not
3 infatc the culprit, the reverse lookup domain name for that ip is
4 responsible but at this stage it still has an old ip pointing to an old
5 redhat 7 box that's over due for retirement but still has a few
6 straggling websites (old big and buggy - one in particular is written in
7 old perl cgi scripts) It seems my problem might just be bigger than I
8 thought any ideas on how I might secure a red hat 7 box (muhahahaha)
9
10 -----Original Message-----
11 From: Jean Blignaut
12 Sent: Friday, January 20, 2006 3:18 PM
13 To: gentoo-server@l.g.o
14 Subject: RE: [gentoo-server] portscanning worm?
15
16 I'm still trying to get some help from the guy who does the main network
17 firewall (FREEBSD that I have no access to) he does run snort on there
18 also but to get any thing out of him is not that easy.
19
20 On the box itself I run shorewall but I allow any traffic from the box
21 to outside (probably need to change that)
22
23 Nothing seems out of place in bash history and /var/log/messages doesn't
24 seem to contain any thing usefull (only log dumped or rejected stuff in
25 the fire wall)
26
27 Ive been resetting up snort (apparently the guys servers where scaned
28 yesterday and this morning so possibly I might learn some thing)
29
30 -----Original Message-----
31 From: xyon [mailto:xyon@×××××××××××.com]
32 Sent: Friday, January 20, 2006 3:02 PM
33 To: gentoo-server@l.g.o
34 Subject: Re: [gentoo-server] portscanning worm?
35
36 I know this seems like a given, but have you checked your bash_history
37 (if
38 it still exists), /var/log/messages, etc? Do you use a kernel with
39 modules
40 enabled? Do you have a firewall between the server and the outside world
41 that would yeild any insight as to what that suspected box is doing?
42
43
44 On Fri, January 20, 2006 06:24, darren kirby wrote:
45 > quoth the Jean Blignaut:
46 >> Hi All
47 >
48 >> I was contacted an hour or so aggo by some one claiming that they are
49 >> being port scanned by an ip used on one of our production gentoo
50 >> servers.
51 >
52 > This could possibly be someone using your machine as a zombie host for
53 an
54 > idlescan:
55 > http://www.insecure.org/nmap/idlescan.html
56 >
57 >> Best Regards
58 >>
59 >> Jean Blignaut
60 >
61 > -d
62 > --
63 > darren kirby :: Part of the problem since 1976 ::
64 http://badcomputer.org
65 > "...the number of UNIX installations has grown to 10, with more
66 > expected..."
67 > - Dennis Ritchie and Ken Thompson, June 1972
68 >
69
70
71 --
72 Steven McCoy
73 Site Development/Manager
74 IndigoRobot Services
75 http://www.indigorobot.com
76 mailto:stevenmccoy@×××××××××××.com
77
78 --
79 gentoo-server@g.o mailing list
80
81
82 --
83 gentoo-server@g.o mailing list
84
85
86 --
87 gentoo-server@g.o mailing list

Replies

Subject Author
RE: [gentoo-server] portscanning worm? Andrew Kesterson <andrew@××××××.net>
Re: [gentoo-server] portscanning worm? Robert Larson <robert@×××××××××.com>
Re: [gentoo-server] portscanning worm? Andy Dustman <farcepest@×××××.com>