joi, 14 decembrie 2017

Fedora 27 : Using atom editor with teletype.

The atom editor is a very good free and open-source text and source code editor for macOS, Linux, and Microsoft Windows.
This editor come with support for plug-ins written in Node.js, and embedded Git Control, developed by GitHub and more features.
Today I will show you how to install this tool with teletype into Fedora 27 distro linux.
Go to the Atom homepage from your web browser and click to download the RPM version.
Use this command to install it:
$sudo su 
#cd Download 
# dnf install atom.x86_64.rpm
Let's see this install:


The next step is to use teletype from atom.

Just install the teletype package into atom editor into settings area.
The teletype tool introduces the concept of real-time "portals" for sharing workspaces.
This tool uses WebRTC to encrypt all communication between collaborators.
Use the teletype with one click on the radio tower icon in the Atom status bar.
This will open a dialog into the right of the screen and ask you for teletype token.
You can get this token from here.
After you put the token then use the check button to share your content and atom teletype will get a ID.
Just share this ID with your development team to share your work.

marți, 12 decembrie 2017

Fedora 27 : About Cockpit linux tool.

About the Cockpit the official website tell us:
Cockpit makes Linux discoverable, allowing sysadmins to easily perform tasks such as starting containers, storage administration, network configuration, inspecting logs and so on.
If you use Fedora 27 the this tool can be used very easy.
If your Fedora Spin don't come with this tool then you can install it with this command:
#dnf -y install cockpit
First you need to follow this steps:
- starting Cockpit requires only a single command:
#systemctl start cockpit
- we’ll configure it to start on boot with:
#systemctl enable cockpit.socket
- you can check the status of Cockpit with:
#systemctl status cockpit
- the Cockpit tool runs on port 9090, so you’ll need to allow it through the firewall with this command:
#firewall-cmd --add-service=cockpit
- or simply add with the open port with:
#firewall-cmd --permanent --add-port=9090/tcp
- you now should reload the firewall for the rule to take effect:
#firewall-cmd --reload
Testing is the next step by log into Cockpit from your localhost (your server’s IP address) with your server’s root credentials.
Once you logged in you’ll see the Dashboard web page containing information about the server itself and graphs showing CPU and Memory Usage as well as Disk I/O and Network Traffic.
Let's see the Dashboard:
  • System come with infos about your system;
  • Logs displays the server’s system and service logs. That allows you to click on any entry for more detailed information, such as the process ID. 
  • Storage gives you a graphical look at disk reads and writes, and also allows you to view relevant logs. Also, you can set up and manage RAID devices and volume groups, and format, partition, and mount/unmount drives. 
  • Networking contains an overview of inbound and outbound traffic, logs and network interface information. You also can configure the network interface from this page. 
  • Containers allows you to manage your Docker containers. You can search for new containers, add or remove containers, start and stop them, and set runtime variables on this page. 
  • Accounts lets you to : add and manage users, set up and change passwords, and add and manage public SSH keys for each user. 
  • Services lists all services, and clicking on any entry takes you to a detail page showing the service log and allowing you to start/stop, enable/disable, reload/isolate, or mask/unmask each service.
  • Terminal let you a fully functional terminal, with tab completion, allowing you to perform any task you could perform through its web interface.This come with the same privileges your login credentials would allow via SSH.
You can take a look at documentation for Cockpit to learn more about this tool.

joi, 7 decembrie 2017

Fedora 27 : Firefox and selinux intro .

Today I made a summary of selinux.
This is a protection and security utility in linux operating systems.
It is quite complex and requires a little guidance in learning.
The basic thing is to secure a grid that matches the security gaps.
The tutorial today simply exemplifies how you can change these rules.
First, check with these commands for the status of selinux:
#getenforce
#sestatus
#sestatus -b
#cat /etc/selinux/config
#ls -lZ /usr/bin/firefox
#chcon -v -t user_home_t /user/bin/firefox
This will change the selinux target type to user_home_t . That will allow firefox to run with this label (like that users) are allowed to read/write and manage. This is the default label for all content in a users home directory. This last command try to prevent confined applications from being able to read and write this content just from users home.

Fedora 27 : Testing Swift with Fedora linux .

I tested today a simple instalation of this package: dnf install swift.
This install come with all additional packets required for running .
This is an application ...
First, I thought in the first phase that they implemented a programming language from Apple .
Take a look at this screenshot:

sâmbătă, 2 decembrie 2017

Fedora 27 : Test install with dotnet from microsoft.

Today I test how to install dotnet from Microsoft team development with Fedora 27.
The Microsoft team come with RedHat packages version - 7.3 and is an old type of packages.
They show us this old way how to deal with this issue , see this link.
I used this command lines into sudo user:
#rpm --import https://packages.microsoft.com/keys/microsoft.asc
#sh -c 'echo -e "[packages-microsoft-com-prod]\nname=packages-microsoft-com-prod 
\nbaseurl=https://packages.microsoft.com/yumrepos/microsoft-rhel7.3-prod\nenabled=1
\ngpgcheck=1\ngpgkey=https://packages.microsoft.com/keys/microsoft.asc" > 
/etc/yum.repos.d/dotnetdev.repo'
#dnf update
#dnf install libunwind libicu compat-openssl10
#dnf install dotnet-sdk-2.0.2
#dotnet new console -o myApp
#cd myApp
#dotnet run
As you can see the dotnet working well with Fedora 27.
I would have preferred a classic dnf installation for reasons of later incompatibility.
This fact only indicates a tangential interest and a clear reason in microsoft capabilities to cover dotnet's area of interest versus linux distributions.

sâmbătă, 25 noiembrie 2017

Fedora 27 : Nettacker tool .

This tool for internet of things is a network of physical objects such as household devices.
This goal let Nettacker tool to automated for information gathering, vulnerability scanning and eventually generating report for networks, including services, bugs, vulnerabilities, misconfigurations and information. Is able to use SYN, ACK, TCP, ICMP and many other protocols to detect and bypass the Firewalls/IDS/IPS and devices.
The project is at the moment in research and development phase and most of results/codes are not published yet.
  • is a IoT Scanner - Internet of Things Scanner;
  • Python Multi Thread and Multi Process Network Information Gathering Vulnerability Scanner;
  • Service and Device Detection ( SCADA, Restricted Areas, Routers, HTTP Servers, Logins and Authentications, None-Indexed HTTP, Paradox System, Cameras, Firewalls, UTM, WebMails, VPN, RDP, SSH, FTP, TELNET Services, Proxy Servers and Many Devices like Juniper, Cisco, Switches and more);
  • Network Service Analysis;
  • Services Vulnerability Testing;
  • Services Brute Force Testing;
  • HTTP/HTTPS Crawling, Fuzzing, Information Gathering and more;
  • Python and Nmap Module Version [ .nse  Lua language ];
  • HTML and text outputs;
How to install into fedora 27.
git clone https://github.com/Nettacker/Nettacker.git
cd Nettacker
pip install -r requirements.txt
python nettacker.py -h
If you run it you will see the help of this tool:

Let's test it:
python nettacker.py --graph d3_tree_v1_graph' -i 127.0.0.1 -m all
The result of this is show in the next image:

miercuri, 22 noiembrie 2017

Fedora 27 : the Docker platform .

The Docker team company tell us:

Docker is the company driving the container movement and the only container platform provider to address every application across the hybrid cloud. Today’s businesses are under pressure to digitally transform but are constrained by existing applications and infrastructure while rationalizing an increasingly diverse portfolio of clouds, datacenters and application architectures. Docker enables true independence between applications and infrastructure and developers and IT ops to unlock their potential and creates a model for better collaboration and innovation.

The Docker platform come many features, so let's see them:
  • use containers; 
  • containers are lightweight;
  • containers are standalone packages;
  • each containers contain everything needed to run an application (code, libraries, runtime, system settings, and dependencies);
  • the biggest difference between a container and a virtual machine: containers is not a full-blown operating system platform;
  • applications are isolated in containers;
  • docker come with: Pricing Plans;
Let's start with the installation and testing of the docker (you need a sudo account):
#sudo dnf install docker
#newgrp docker
#sudo groupadd docker && sudo gpasswd -a ${USER} docker && sudo systemctl restart docker
#sudo usermod -a -G docker $USER
#sudo systemctl start docker
#sudo systemctl enable docker
#sudo systemctl stop docker
#sudo systemctl restart docker

This commands will install docker with dnf tool and will add your user to group docker.
The command with systemctl is used to test the docker services.
You can test the docker by searching and start applications:
#sudo docker search hello-world
#sudo docker run hello-world

The result of the run hello-world is this: