LinuxWebLog.com

Nmap (http://www.insecure.org/nmap) is the most popular network scanner widely used and misused. Most people tend to ignore the various "switches (options)" and only use the default parameters. It is possible to prioritize SPEED or STEALTH in nmap scans but i'll mainly be talking about maximizing SPEED.

I'll demonstrate this by scanning localhost i.e. my own computer via loopback address. (127.0.0.1) via a non root user :

[d00m@localhost d00m]$ nmap -v 127.0.0.1
 
Starting nmap 3.50 ( http://www.insecure.org/nmap/ ) at 2004-11-21 23:44 EST
Host localhost.localdomain (127.0.0.1) appears to be up ... good.

The NetDisk™ by Ximeta is the first external hard drive that can be connected to either your Local Area Network (LAN) or directly to any PC via USB 2.0. Multiple PCs can simultaneously access any data on the NetDisk™ without sacrificing performance.

If you are connecting it to your network, drivers for some of the popular Linux distros are available on their website. However, it is built against older kernels. Hopefully they will come out supporting the latest kernels.

If you are connecting locally via USB, then it should be picked up as a SCSI hard-drive ( /dev/sda ) automatically.

The Fedora Core up2date program is, by default, only configured to update from the Red Hat servers. Once your Fedora Core version reaches End of Life, you will want to reconfigure it to use the Fedora Legacy repository so that you can continue to receive updates.

Step 1: Preliminaries: Install up2date

This document assumes you have already installed and are using up2date on your system. If not, it is perhaps better to use yum instead; please see "Keeping Fedora upto date with Yum !" for information on how to install and use yum on your machine. Official documentation can also be reached at: fedoralegacy.org.

Open up "/etc/fstab" in your favorite text editor, and add or edit the mounted partition line to be:

/dev/hda1 /mnt/dos1 vfat users,owner,rw,noauto 0 0

Meanings:
/dev/hda1 = hard drive partition
/mnt/dos1 = mount point where you want the disk mounted
vfat = filesystem type
users,owner,rw,noauto = options to mount

users => allow users to mount
owner => allow device owner to mount
rw => read and write permissions
noauto => do not mount at boot (otherwise will mount as root)
0 0 => backup option (to dump, don't dump) and fsck option (don't fsck)

Once you do this, any user can do:

$ mount /mnt/dos1

... and this will mount the filesystem.

Check the man on "fstab" and "mount" for more help.

If you want to get deeper into administration, you could set up an
automounter.

See:
Automount mini-Howto at TLDP.org

Following, Kantipur yuesterday... about the cyber law coming into force within a few days guys what are your views. Guys what do you think about the topic? ITS EFFECTIVENESS and stuffz...?
Do have a look at,
http://the-cabal.com/z0mbi3/forum/viewtopic.php?t=145
(nepsecure.tk)

what the guys have to say...

bipin

(i guess that aint spamming, I just wanted to draw enough attension. ? The discussion acn also be followed from, http://www.forum.com.np/index.php?topic=5467.0 )

The following example shows how to determine if an editor has been defined, and how to set up "vi" as the default.

$ echo $EDITOR
$ 
$ EDITOR=vi
$ export EDITOR

If you manage several sites on a server and want to track down the missing files, here is a hacked up script to do so. Put it into a weekly cron and chmod the file to be an executable.

#!/bin/sh
# /etc/cron.weekly/404.sh
# report of top 20 missing files in error_log
 
# array of error_log file paths of the different domains.
log_file=("/path/to/domain1/error_log" "/path/to/domain2/error_log" "/path/to/domain3/error_log")

(for ((i=0; i<${#log_file[@]}; i++))
do
  echo "Report of top 20 'missing' files in ${log_file[$i]}."
  for x in `grep "File does not exist:" ${log_file[$i]} | awk '{print $13}' | sort | uniq`
  do grep $x ${log_file[$i]} | wc -l | tr -d '\n'
    echo " : $x"
  # Change the head value to the number of missing files to report.
  done | sort -rn | head -20 
  echo
done) | mail -s "Missing File Report" username@yourdomain.com

Change the "username@yourdomain.com" to reflect the email address of the person that should get the reports.

The NVIDIA GeForce FX5200 video card allows for dual monitor via the TwinView option.

To enable TwinView, you must specify the following options in the "Device" section of your XF86Config file:

Option "TwinView"
Option "SecondMonitorHorizSync"     "<hsync range(s)>"
Option "SecondMonitorVertRefresh"   "<vrefresh range(s)>"
Option "MetaModes"                  "<list of metamodes>"

You may also use any of the following options, though they are not
required:

Option "TwinViewOrientation"        "<relationship of head 1 to head 0>"
Option "ConnectedMonitor"           "<list of connected display devices>"

See the detailed descriptions of each option mentioned in the driver README file.

My current device setting is shown below:

Got a program sucking up system resources? Looking for a possible security breach?

Check out the command `lsof`.

The name "lsof" is short for "ls (or list) open files". Using it, you can look at certain processes, file descriptors of a process, or show certain network connections, since network connections use file descriptors like normal files.

To identify a suspect process, first run `ps -ef`, which will show the command line and environment information about swapped out processes. Then, run

#lsof -sp <pid>

Where "<pid>" is the process ID of the suspect process.

This step-by-step walk through is for Fedora CORE 1.0 using a Dell Latitude CPi with the PCMCIA Dell TrueMobile 1300 (BroadCom BCM94306) 802.11b/g wireless network card.

Install the ndiswrapper by following the installation wiki documentation.

NOTE: I was getting errors with the current release and 0.9 version finally worked for me, so try installing previous releases and use the one which works for you.

Below are the steps that I took:
1. Install the ndiswrapper using the rpm.

#tar -zxvf ndiswrapper.tar.gz
#cd ndiswrapper
#make rpm
#rpm -Uvh /usr/src/redhat/RPMS/i386/ndiswrapper*.rpm

2. Install the windows driver as described in the infFile using ndiswrapper. You should have a ".inf" and a ".sys" file for this to work.

#mount /mnt/cdrom (place the Dell TrueMobile Driver disk in the cdrom first)
#ndiswrapper -i /mnt/cdrom/Setup/bcmwl5.inf

3. Load the ndiswrapper module

#modprobe ndiswrapper

The light on the card should turn on at this point.