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Wednesday, March 8, 2017

Fedora 25: Enable gnome notifications Fedmsg and Openweather.

This tutorial is about gnome environment and notifications.
If you want to see notifications about your work and account under Fedora distro or just to see the weather then you need to deal with this tools.
Take a look to your gnome version and shell version:
[mythcat@localhost ~]$ gnome-about --gnome-version 
Version: 2.32.0
Distributor: Red Hat, Inc
Build Date: 02/04/2016
[mythcat@localhost ~]$ gnome-shell --version 
GNOME Shell 3.22.3
Use the dnf install tool and get this packages:
gnome-weather.noarch : A weather application for GNOME
gnome-weather-tests.noarch : Tests for the gnome-weather package
gnome-shell-extension-openweather.noarch : Display weather information from many
gnome-shell-extension-apps-menu.noarch : Application menu for GNOME Shell
gnome-shell.x86_64 : Window management and application launching for GNOME
gnome-shell-extension-common.noarch : Files common to GNOME Shell Extensions
gnome-tweak-tool.noarch : A tool to customize advanced GNOME 3 options
Use this command to make settings:
[mythcat@localhost ~]$ gnome-tweak-tool
You will see a window with options for enable Fedmsg and Openweather notifications.
After select on option then just use right click to make settings for each extension.

Fedora 25: Install the ffmpeg tools .

Install from web the repos rpmfusion using root account:
# dnf install http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
[root@localhost]# dnf install http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
Now with enable the repo all rpmfusion list ffmpeg:
# yum --enablerepo=rpmfusion-* list ffmpeg
Redirecting to '/usr/bin/dnf --enablerepo=rpmfusion-* list ffmpeg' (see 'man yum2dnf')

RPM Fusion for Fedora 25 - Free - Test Updates 1.3 kB/s | 1.9 kB     00:01    
RPM Fusion for Fedora 25 - Nonfree - Updates S 4.8 kB/s | 7.0 kB     00:01    
RPM Fusion for Fedora 25 - Free - Updates Debu 185 kB/s | 331 kB     00:01    
RPM Fusion for Fedora 25 - Nonfree - Test Upda 1.7 kB/s | 2.7 kB     00:01    
RPM Fusion for Fedora Rawhide - Nonfree         91 kB/s | 157 kB     00:01    
RPM Fusion for Fedora Rawhide - Free - Debug   280 kB/s | 521 kB     00:01    
RPM Fusion for Fedora 25 - Free - Source        58 kB/s |  95 kB     00:01    
RPM Fusion for Fedora 25 - Free - Test Updates 9.7 kB/s |  16 kB     00:01    
RPM Fusion for Fedora 25 - Nonfree - Updates D 3.8 kB/s | 5.6 kB     00:01    
RPM Fusion for Fedora Rawhide - Nonfree - Sour  24 kB/s |  37 kB     00:01    
RPM Fusion for Fedora 25 - Free - Updates Sour 143 kB/s |  30 kB     00:00    
RPM Fusion for Fedora 25 - Nonfree             525 kB/s | 144 kB     00:00    
RPM Fusion for Fedora Rawhide - Free           1.1 MB/s | 531 kB     00:00    
RPM Fusion for Fedora 25 - Free - Test Updates  23 kB/s | 3.6 kB     00:00    
RPM Fusion for Fedora 25 - Nonfree - Updates    13 kB/s |  19 kB     00:01    
RPM Fusion for Fedora Rawhide - Free - Source   58 kB/s |  97 kB     00:01    
RPM Fusion for Fedora 25 - Free - Debug        879 kB/s | 380 kB     00:00    
RPM Fusion for Fedora 25 - Nonfree - Debug      41 kB/s |  69 kB     00:01    
RPM Fusion for Fedora 25 - Nonfree - Test Upda 1.7 kB/s | 2.6 kB     00:01    
RPM Fusion for Fedora 25 - Nonfree - Source     22 kB/s |  34 kB     00:01    
RPM Fusion for Fedora 25 - Nonfree - Test Upda 5.4 kB/s | 8.5 kB     00:01    
RPM Fusion for Fedora Rawhide - Nonfree - Debu 241 kB/s |  70 kB     00:00    
RPM Fusion for Fedora 25 - Free - Updates      154 kB/s | 254 kB     00:01    
RPM Fusion for Fedora 25 - Free                288 kB/s | 515 kB     00:01    
Available Packages
ffmpeg.src               3.2.4-1.fc26             rpmfusion-free-rawhide-source
ffmpeg.x86_64            3.2.4-1.fc26             rpmfusion-free-rawhide
Then install ffmpeg:
[root@localhost]# yum --enablerepo=rpmfusion-* install ffmpeg.x86_64
Redirecting to '/usr/bin/dnf --enablerepo=rpmfusion-* install ffmpeg.x86_64' (see 'man yum2dnf')

Last metadata expiration check: 0:00:26 ago on Tue Mar  7 23:40:51 2017.
Dependencies resolved.
===============================================================================
 Package      Arch   Version                      Repository              Size
===============================================================================
Installing:
 ffmpeg       x86_64 3.2.4-1.fc26                 rpmfusion-free-rawhide 1.5 M
 ffmpeg-libs  x86_64 3.2.4-1.fc26                 rpmfusion-free-rawhide 6.2 M
 fribidi      x86_64 0.19.7-2.fc24                fedora                  70 k
 lame-libs    x86_64 3.99.5-6.fc26                rpmfusion-free-rawhide 344 k
 libass       x86_64 0.13.4-1.fc25                fedora                  95 k
 libavdevice  x86_64 3.2.4-1.fc26                 rpmfusion-free-rawhide  83 k
 libmfx       x86_64 1.19-1.20170114gita5ba231.fc25
                                                  updates                 33 k
 libva        x86_64 1.7.3-3.fc25                 updates                 89 k
 ocl-icd      x86_64 2.2.11-1.fc25                updates                 46 k
 opencore-amr x86_64 0.1.3-4.fc24                 rpmfusion-free-rawhide 176 k
 schroedinger x86_64 1.0.11-10.fc24               fedora                 325 k
 vo-amrwbenc  x86_64 0.1.3-1.fc24                 rpmfusion-free-rawhide  76 k
 x264-libs    x86_64 0.148-15.20170121git97eaef2.fc26
                                                  rpmfusion-free-rawhide 574 k
 x265-libs    x86_64 2.2-1.fc26                   rpmfusion-free-rawhide 586 k
 xvidcore     x86_64 1.3.4-2.fc24                 rpmfusion-free-rawhide 262 k

Transaction Summary
===============================================================================
Install  15 Packages

Total download size: 10 M
Installed size: 28 M
Is this ok [y/N]: y
Downloading Packages:
(1/15): x265-libs-2.2-1.fc26.x86_64.rpm        780 kB/s | 586 kB     00:00    
(2/15): ffmpeg-3.2.4-1.fc26.x86_64.rpm         1.6 MB/s | 1.5 MB     00:00    
(3/15): libass-0.13.4-1.fc25.x86_64.rpm        294 kB/s |  95 kB     00:00    
(4/15): fribidi-0.19.7-2.fc24.x86_64.rpm       137 kB/s |  70 kB     00:00    
(5/15): libmfx-1.19-1.20170114gita5ba231.fc25. 418 kB/s |  33 kB     00:00    
(6/15): libva-1.7.3-3.fc25.x86_64.rpm          915 kB/s |  89 kB     00:00    
(7/15): schroedinger-1.0.11-10.fc24.x86_64.rpm 1.3 MB/s | 325 kB     00:00    
(8/15): ocl-icd-2.2.11-1.fc25.x86_64.rpm       401 kB/s |  46 kB     00:00    
(9/15): ffmpeg-libs-3.2.4-1.fc26.x86_64.rpm    3.8 MB/s | 6.2 MB     00:01    
(10/15): lame-libs-3.99.5-6.fc26.x86_64.rpm    2.1 MB/s | 344 kB     00:00    
(11/15): opencore-amr-0.1.3-4.fc24.x86_64.rpm  1.1 MB/s | 176 kB     00:00    
(12/15): vo-amrwbenc-0.1.3-1.fc24.x86_64.rpm   656 kB/s |  76 kB     00:00    
(13/15): xvidcore-1.3.4-2.fc24.x86_64.rpm      1.9 MB/s | 262 kB     00:00    
(14/15): x264-libs-0.148-15.20170121git97eaef2 2.7 MB/s | 574 kB     00:00    
(15/15): libavdevice-3.2.4-1.fc26.x86_64.rpm   694 kB/s |  83 kB     00:00    
-------------------------------------------------------------------------------
Total                                          2.2 MB/s |  10 MB     00:04     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Installing  : libva-1.7.3-3.fc25.x86_64                                 1/15 
  Installing  : libmfx-1.19-1.20170114gita5ba231.fc25.x86_64              2/15 
  Installing  : ocl-icd-2.2.11-1.fc25.x86_64                              3/15 
  Installing  : fribidi-0.19.7-2.fc24.x86_64                              4/15 
  Installing  : libass-0.13.4-1.fc25.x86_64                               5/15 
  Installing  : xvidcore-1.3.4-2.fc24.x86_64                              6/15 
  Installing  : x264-libs-0.148-15.20170121git97eaef2.fc26.x86_64         7/15 
  Installing  : vo-amrwbenc-0.1.3-1.fc24.x86_64                           8/15 
  Installing  : opencore-amr-0.1.3-4.fc24.x86_64                          9/15 
  Installing  : lame-libs-3.99.5-6.fc26.x86_64                           10/15 
  Installing  : schroedinger-1.0.11-10.fc24.x86_64                       11/15 
  Installing  : x265-libs-2.2-1.fc26.x86_64                              12/15 
  Installing  : ffmpeg-libs-3.2.4-1.fc26.x86_64                          13/15 
  Installing  : libavdevice-3.2.4-1.fc26.x86_64                          14/15 
  Installing  : ffmpeg-3.2.4-1.fc26.x86_64                               15/15 
  Verifying   : ffmpeg-3.2.4-1.fc26.x86_64                                1/15 
  Verifying   : ffmpeg-libs-3.2.4-1.fc26.x86_64                           2/15 
  Verifying   : x265-libs-2.2-1.fc26.x86_64                               3/15 
  Verifying   : fribidi-0.19.7-2.fc24.x86_64                              4/15 
  Verifying   : libass-0.13.4-1.fc25.x86_64                               5/15 
  Verifying   : schroedinger-1.0.11-10.fc24.x86_64                        6/15 
  Verifying   : libmfx-1.19-1.20170114gita5ba231.fc25.x86_64              7/15 
  Verifying   : libva-1.7.3-3.fc25.x86_64                                 8/15 
  Verifying   : ocl-icd-2.2.11-1.fc25.x86_64                              9/15 
  Verifying   : lame-libs-3.99.5-6.fc26.x86_64                           10/15 
  Verifying   : opencore-amr-0.1.3-4.fc24.x86_64                         11/15 
  Verifying   : vo-amrwbenc-0.1.3-1.fc24.x86_64                          12/15 
  Verifying   : x264-libs-0.148-15.20170121git97eaef2.fc26.x86_64        13/15 
  Verifying   : xvidcore-1.3.4-2.fc24.x86_64                             14/15 
  Verifying   : libavdevice-3.2.4-1.fc26.x86_64                          15/15 

Installed:
  ffmpeg.x86_64 3.2.4-1.fc26                                                   
  ffmpeg-libs.x86_64 3.2.4-1.fc26                                              
  fribidi.x86_64 0.19.7-2.fc24                                                 
  lame-libs.x86_64 3.99.5-6.fc26                                               
  libass.x86_64 0.13.4-1.fc25                                                  
  libavdevice.x86_64 3.2.4-1.fc26                                              
  libmfx.x86_64 1.19-1.20170114gita5ba231.fc25                                 
  libva.x86_64 1.7.3-3.fc25                                                    
  ocl-icd.x86_64 2.2.11-1.fc25                                                 
  opencore-amr.x86_64 0.1.3-4.fc24                                             
  schroedinger.x86_64 1.0.11-10.fc24                                           
  vo-amrwbenc.x86_64 0.1.3-1.fc24                                              
  x264-libs.x86_64 0.148-15.20170121git97eaef2.fc26                            
  x265-libs.x86_64 2.2-1.fc26                                                  
  xvidcore.x86_64 1.3.4-2.fc24                                                 

Complete!
[root@localhost]#
Just test te ffmpeg tools.

Tuesday, March 7, 2017

Try pentbox like honeypot tool with Fedora 25.

PenTBox is a Security Suite that packs security and stability testing oriented tools for networks and systems.
Programmed in Ruby and oriented to GNU/Linux systems, but compatible with Windows, MacOS and every systems where Ruby works. It is free, licensed under GNU/GPLv3.
First you need to install the ruby
[root@localhost pentbox]# dnf install ruby 
Last metadata expiration check: 1:55:17 ago on Tue Mar  7 20:16:17 2017.
Dependencies resolved.
================================================================================
 Package                   Arch        Version               Repository    Size
================================================================================
Installing:
 ruby                      x86_64      2.3.3-61.1.fc25       updates       76 k
 ruby-irb                  noarch      2.3.3-61.1.fc25       updates       94 k
 rubygem-bigdecimal        x86_64      1.2.8-61.1.fc25       updates       87 k
 rubygem-did_you_mean      x86_64      1.0.0-61.1.fc25       updates      219 k
 rubygem-io-console        x86_64      0.4.5-61.1.fc25       updates       57 k
...
  rubygems.noarch 2.5.2-61.1.fc25                                               
  rubypick.noarch 1.1.1-5.fc24                                                  

Complete!
You need also the svn. The subversion is a free/open source version control system.
[root@localhost pentbox]# dnf install svn
Last metadata expiration check: 1:59:41 ago on Tue Mar  7 20:16:17 2017.
Package subversion-1.9.5-1.fc25.x86_64 is already installed, skipping.
Dependencies resolved.
Nothing to do.
Complete!
Let get the pentbox.
svn co https://pentbox.svn.sourceforge.net/svnroot/pentbox/trunk/ pentbox
cd pentbox
svn update
./pentbox.rb
[root@localhost pentbox]# ./pentbox.rb

 PenTBox 1.5 
         __
        U00U|.'@@@@@@`.
        |__|(@@@@@@@@@@)
             (@@@@@@@@)
             `YY~~~~YY'
              ||    ||

--------- Menu          ruby2.3.3 @ x86_64-linux

1- Cryptography tools

2- Network tools

3- Web

4- License and contact

5- Exit

   -> 2

1- Net DoS Tester
2- TCP port scanner
3- Honeypot
4- Fuzzer
5- DNS and host gathering
6- MAC address geolocation (samy.pl)

0- Back

   -> 3

// Honeypot //

You must run PenTBox with root privileges.

 Select option.

1- Fast Auto Configuration
2- Manual Configuration [Advanced Users, more options]

   -> 1

  HONEYPOT ACTIVATED ON PORT 80 (2017-03-07 22:20:30 +0200)


Now, let's simulate one attack and see the result. Open your browser and put your_ip into address bar with port 80 and press enter key or go button:
your_ip:90
Take a look to your terminal and see the result. You can see something like that:

  INTRUSION ATTEMPT DETECTED! from your_ip:40482 (2017-03-07 22:22:07 +0200)
 -----------------------------
GET / HTTP/1.1
Host: your_ip
User-Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1
The your_ip will fill with your ip workstation. You can also make more settings with the pentbox tool.

Friday, March 3, 2017

The ScreenFetch tool with Fedora 25 .

ScreenFetch is a System Information Tool designed primarily for Bash Shell but function with other shell environment as well. The tool is smart enough to auto-detect the Linux distribution you are using and generate the ASCII logo of the distribution with certain valuable information to the right of logo. 
Let's see my ScreenFetch:

Fedora: telnet game - BatMUD.

This is a good game if you have a telnet and internet connection.
Just open your terminal, run the telnet command and type o to open this: batmud.bat.org 23.
The game has an official website.
The team tells us about this game:

What is BatMUD - scratching the surface 

One could go on and rant for hours and hours about the Game. If you're not familiar with BatMUD, don't worry - you won't even be after the first week of playing. The game's not easy, it was never intended to be. The first eyeful can be deceiving, especially as we live in the fully graphical world of commercially produced, hundred-million dollar budget behemoths. Our game, it's nothing like that; even though we tend to boast that it is more, and trust us - it is. A problem with the modern day games is that, eventually they become very dull or simply uninspiring. However, BatMUD's text-based approach it is different, somewhat to as reading a good book - it's all about your imagination. Hundreds of volunteer developers through the Decades have brought a special uniqueness to the Game, and new ones continue the Legacy to this day. We cater to almost everyone: the available options and playstyles are basically endless. It's Your Realm.

The java interface with my account, see:

Saturday, February 25, 2017

Install Adobe Flash Player 24 on Fedora 25

Is very simple , I use this commands today:
[root@localhost mythcat]
# rpm -ivh http://linuxdownload.adobe.com/adobe-release/adobe-release-x86_64-1.0-1.noarch.rpm
Retrieving http://linuxdownload.adobe.com/adobe-release/adobe-release-x86_64-1.0-1.noarch.rpm
warning: /var/tmp/rpm-tmp.yTBgjV: Header V3 DSA/SHA1 Signature, key ID xxxxxxx: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:adobe-release-x86_64-1.0-1       ################################# [100%]
[root@localhost mythcat]# rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux
[root@localhost mythcat]# dnf install flash-plugin alsa-plugins-pulseaudio libcurl
Adobe Systems Incorporated                       11 kB/s | 2.0 kB     00:00    
Package alsa-plugins-pulseaudio-1.1.1-1.fc25.x86_64 is already installed, skipping.
Package libcurl-7.51.0-4.fc25.x86_64 is already installed, skipping.
Dependencies resolved.
================================================================================
 Package         Arch      Version                  Repository             Size
================================================================================
Installing:
 flash-plugin    x86_64    24.0.0.221-release       adobe-linux-x86_64    9.2 M

Transaction Summary
================================================================================
Install  1 Package

Total download size: 9.2 M
Installed size: 22 M
Is this ok [y/N]: y
Downloading Packages:
flash-player-npapi-24.0.0.221-release.x86_64.rp 1.2 MB/s | 9.2 MB     00:07    
--------------------------------------------------------------------------------
Total                                           1.2 MB/s | 9.2 MB     00:07     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Installing  : flash-plugin-24.0.0.221-release.x86_64                      1/1 
  Verifying   : flash-plugin-24.0.0.221-release.x86_64                      1/1 

Installed:
  flash-plugin.x86_64 24.0.0.221-release                                        

Complete!
[root@localhost mythcat]# 

Tuesday, February 21, 2017

Fedora 25: The perf linux tool.

If you want a good tool to test your performance under Fedora 25 distro or linux then the perf tool is great.
You can read a full tutorial from perf wiki and that will give a good impression on this utility.
The main problem come when you need to understand why we have to use this utility in linux.
Intro A trivial use the top command will show you the necessary information about your Linux.
If you look closely you will notice that : load average: 0.09, 0.05, 0.01
The three numbers represent averages over progressively longer periods of time (one, five, and fifteen minute averages). This means for us: that lower numbers are better and the higher numbers represent a problem or an overloaded machine. Now about multicore and multiprocessor the rule is simple: the total number of cores is what matters, regardless of how many physical processors those cores are spread across. Let's use this command: First I will record some data about my CPU:
[mythcat@localhost ~]$ perf record -e cpu-clock -ag 
Error:
You may not have permission to collect system-wide stats.

Consider tweaking /proc/sys/kernel/perf_event_paranoid,
which controls use of the performance events system by
unprivileged users (without CAP_SYS_ADMIN).

The current value is 2:

  -1: Allow use of (almost) all events by all users
>= 0: Disallow raw tracepoint access by users without CAP_IOC_LOCK
>= 1: Disallow CPU event access by users without CAP_SYS_ADMIN
>= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN
[mythcat@localhost ~]$ su 
Password: 
[root@localhost mythcat]# perf record -e cpu-clock -ag 
^C[ perf record: Woken up 17 times to write data ]
[ perf record: Captured and wrote 5.409 MB perf.data (38518 samples) ]

[root@localhost mythcat]# ls -l perf.data
-rw-------. 1 mythcat mythcat 5683180 Feb 21 13:24 perf.data
You can see the perf tool working with root account and result is owned by deafult user. Let's show this data using the default user - mythcat and perf tool:
[mythcat@localhost ~]$ perf report
The result of this command: You can use the full list events by using this command:
[mythcat@localhost ~]$ perf list 

List of pre-defined events (to be used in -e):

  branch-instructions OR branches                    [Hardware event]
  branch-misses                                      [Hardware event]
  bus-cycles                                         [Hardware event]
  cache-misses                                       [Hardware event]
  cache-references                                   [Hardware event]
  cpu-cycles OR cycles                               [Hardware event]
  instructions                                       [Hardware event]
  ref-cycles                                         [Hardware event]

  alignment-faults                                   [Software event]
  bpf-output                                         [Software event]
  context-switches OR cs                             [Software event]
  cpu-clock                                          [Software event]
  cpu-migrations OR migrations                       [Software event]
  dummy                                              [Software event]
  emulation-faults                                   [Software event]
  major-faults                                       [Software event]
  minor-faults                                       [Software event]
  page-faults OR faults                              [Software event]
  task-clock                                         [Software event]
Let's see one event from this list and that will told us how Fedora working:
[root@localhost mythcat]# perf top -e minor-faults -ns comm
Is use the comm (keys are available: pid, comm, dso, symbol, parent, cpu, socket, srcline, weight, local_weight) and the -ns args see the manual of perf command. The result of this command is: This is most simple way to see how is start and close some pids and how they interact in real-time with the operating system. Another way to deal with the perf command is how to analyze most scheduler properties from within 'perf sched' alone using the perf sched with the five sub-commands currently:

perf sched record            # low-overhead recording of arbitrary workloads
perf sched latency           # output per task latency metrics
perf sched map               # show summary/map of context-switching
perf sched trace             # output finegrained trace
perf sched replay            # replay a captured workload using simlated threads
Try this example to see the to capture a trace and then to check latencies (which analyzes the trace in perf.data record file).
perf sched record sleep 10     # record full system activity for 10 seconds
perf sched latency --sort max  # report latencies sorted by max 
You can also make a map of map of scheduling events by using this command:
[root@localhost mythcat]# perf sched record 
This tutorial show you just only 1% of ways of using the perf command.