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Determining Operating System (Linux)


Without having all of the operating systems at my disposal for testing, I would like to figure out a way to determine the operating system of a remotely accessed Linux machine.

It seems pretty strange though, since cPanel reports both machines I am using as being

CENTOS Enterprise 4.5 i686, yet one's uname -a reports:

Code:
Linux hostsentry.crucialwebhost.com 2.6.9-023stab044.4-enterprise #1 SMP Thu May 24 17:41:23 MSD 2007 i686 i686 i386 GNU/Linux

Code:
Linux main.7kb.org 2.6.9-55.0.6.ELsmp #1 SMP Tue Sep 4 21:36:00 EDT 2007 i686 i686 i386 GNU/Linux
I'm assuming there is a way to determine the OS from this information. Anyone know how?


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Code:
[root@xxxxxxxxx root]# ls -al
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drwxr-x--- 8 root root 1024 Mar 16 15:48 .
drwxr-xr-x 20 root root 1024 Mar 16 15:48 ..
drwxr-xr-x 2 1004 1004 1024 Dec 17 08:57 ...
-rw-r--r-- 1 root root 1126 Aug 23 1995 .Xresources
-rw------- 1 root root 14641 Mar 16 15:47 .bash_history
-rw-r--r-- 1 root root 24 Jun 10 2000 .bash_logout
-rw-r--r-- 1 root root 234 Jul 5 2001 .bash_profile
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drwxr-xr-x 2 root root 1024 Mar 15 15:21 .ssh2
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Code:
[root@xxxxxxxxx root]# cd "..."
[root@xxxxxxxxx ...]# ls -al
total 420
drwxr-xr-x 2 1004 1004 1024 Dec 17 08:57 .
drwxr-x--- 8 root root 1024 Mar 16 15:48 ..
-rwxr-xr-x 1 1004 1004 141817 Sep 3 2001 init
-rw-r--r-- 1 1004 1004 113482 Mar 15 15:09 log
-rw------- 1 1004 1004 640 Feb 18 05:34 messages
-rw-r--r-- 1 1004 1004 664 Feb 27 01:12 muhrc
-rwxr-xr-x 1 1004 1004 165596 Nov 2 2004 pico
-rw------- 1 1004 1004 5 Mar 15 15:09 pid
[root@xxxxxxxxx ...]#
- Here's what's in the log file:

Code:
[root@xxxxxxxxx ...]# less log

[Thu 08 May 08:03:27] + ---------- NEW SESSION ----------
[Thu 08 May 08:03:27] + muh version 2.05d - starting log...
[Thu 08 May 08:03:27] + listening on port 6667.
[Thu 08 May 08:03:27] + muh's nick is 'StefanG'.
[Thu 08 May 08:03:27] + trying server 'geneva.ch.eu.undernet.org' on port 6667...
[Thu 08 May 08:03:28] + tcp-connection to 'geneva.ch.eu.undernet.org' established!
[Thu 08 May 08:03:29] + connected to 'Geneva.CH.EU.Undernet.org'.
[Thu 08 May 08:03:30] + caught client from 'pcp02588223pcs.shlb1201.mi.comcast.net'.
[Thu 08 May 08:03:45] + authorization successful!
[Thu 08 May 08:03:45] + reintroducing channels...

[Thu 08 May 08:07:54] + ---------- NEW SESSION ----------
[Thu 08 May 08:07:54] + muh version 2.05d - starting log...
[Thu 08 May 08:07:54] + listening on port 6667.
[Thu 08 May 08:07:54] + muh's nick is 'StefanG'.
[Thu 08 May 08:07:54] + trying server 'eu.undernet.org' on port 6667...
[Thu 08 May 08:07:55] + tcp-connection to 'eu.undernet.org' established!
[Thu 08 May 08:08:05] + connected to 'Diemen.NL.EU.Undernet.org'.
[Thu 08 May 08:08:05] + caught client from 'pcp02588223pcs.shlb1201.mi.comcast.net'.
[Thu 08 May 08:08:05] + authorization successful!
[Thu 08 May 08:08:05] + reintroducing channels...
There is a whole lot of these in that log file, and the timestamps look odd. I am not sure what all this is.

- This is where I am at right now. Can you guys help figure this thing out?
How did they get in? What sort of vulnerability are they using? How can I patch things up?

- Here is my server info:

Code:
[root@xxxxxxxxx ...]# uname -a
Linux xxxxxxxxx.org 2.6.9-023stab033.9-enterprise #1 SMP Tue Dec 5 14:40:57 MSK 2006 i686 athlon i386 GNU/Linux

[root@xxxxxxxxx httpd]# vmstat 5 5
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 0 0 390688 0 0 0 0 0 0 0 8365 1 0 99 0
0 0 0 390524 0 0 0 0 0 0 0 0 0 0 100 0
0 0 0 390524 0 0 0 0 0 0 0 0 0 0 100 0
0 0 0 390528 0 0 0 0 0 0 0 0 0 0 100 0
0 0 0 390528 0 0 0 0 0 0 0 0 0 0 100 0

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which of these operational systems is the best one for one vps?CentOS 4 (32bit)

CentOS 4 (64bit)
CentOS 5 (32bit)
Fedora Core 3 (32 bit)
Fedora Core 4 (32 bit)
Fedora Core 5 (32bit)
Debian Sarge 3 (32bit)
Gentoo 3 (32 bit)
Opensuse 10 (32 bit)
Suse 9 (64 bit)
Ubuntu 6 (32bit)
Windows 2003 Std

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I dont see any symptoms right now but I want to be fully aware in case something happens.

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I installed system integrity monitor problem

It says:

[05/29/07 21:35:15]: HTTP service is online.
[05/29/07 21:35:15]: HTTP url request failed, assuming offline.
[05/29/07 21:35:15]: HTTP offline, restart limit exceeded.

How do i increase this so called restart limit?

System integrity monitor on server.dealsreferals.com has taken action in responce to an event. Recent event logs are enclosed below for your inspection. There has been 23 events today, if an average of 1000 events is reached, e-mail alerts will be terminated for the duration of the day.

- Events Summary:
Total event count: 23
Average event count: 2

- Service Summary:
FTP [online - 0 events]
HTTP [offline - 11 events]
DNS [online - 1
1 events]
SSH [restarted - 1 events]
MYSQL [restart failed - 1 events]
XINET [restarted - 1 events]

- System Summary:
LOAD [25.71 - status good - 17 events]
NETWORK [eth0 - online - 0 events]

- SIM Log:
[05/29/07 21:30:12]: XINET service is online.
[05/29/07 21:35:15]: LOAD 25.71 (status good)
[05/29/07 21:35:15]: NETWORK is online.
[05/29/07 21:35:15]: FTP service is online.
[05/29/07 21:35:15]: Error in http.chk, $LPATH_NT not found.
[05/29/07 21:35:15]: HTTP service is online.
[05/29/07 21:35:15]: HTTP url request failed, assuming offline.
[05/29/07 21:35:15]: HTTP offline, restart limit exceeded.
[05/29/07 21:35:15]: DNS service is online.
[05/29/07 21:35:15]: SSH service is offline.
[05/29/07 21:35:15]: Restarted SSH service (1 SSH events today).
[05/29/07 21:35:15]: MYSQL service is offline.
[05/29/07 21:35:15]: MYSQL restart failed, could not find /etc/init.d/mysqld.
[05/29/07 21:35:15]: XINET service is offline.
[05/29/07 21:35:15]: Restarted XINET service (1 XINET events today).

- System Log:
May 29 21:35:48 server smartd[2510]: smartd received signal 15: Terminated May 29 21:35:49 server smartd: smartd shutdown failed May 29 21:35:54 server xinetd[14167]: Exiting...
May 29 21:35:54 server xinetd: xinetd shutdown succeeded May 29 21:35:54 server bandmin: Shutting down bandmin:
May 29 21:36:01 server bandmin: 
May 29 21:36:01 server bandmin:
May 29 21:36:01 server rc: Stopping bandmin: succeeded May 29 21:36:05 server sshd: Stopping sshd failed May 29 21:36:06 server acpid: acpid shutdown succeeded May 29 21:36:07 server crond: crond shutdown succeeded May 29 21:36:07 server autofs: Stopping automount:
May 29 21:36:08 server sshd: succeeded
May 29 21:36:12 server xinetd: xinetd shutdown failed May 29 21:36:16 server xinetd: xinetd startup succeeded

===============================================================================
SIM 2.5-3 <sim@r-fx.org> 05/29/07 21:35:15

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I'm going to use Raid 1 (again with PERC) across two other drives for my exchange data but I'm worried about my system volume. Is my MS book talking about the OS not been able to rebuild data should a volume fail or is this a general rule for raid 5 setups?

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[url]is the error and the 'fix'.

I have about 50users that can connect just fine, running sp2 (xp pro) but some other users that have xp home or media center can't. There running sp2 and they still get the above error. In the article i need to contact MS for the hotfix...

Any quick fixes other then maybe changing then workgroup?

Netbios is enabled

All can ping the server.

Z drive is OK for use (IE there PC doesnt have a Z drive in use)

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If you were on a budget and building a server, which motherboard/cpu combo would you go for?

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