The current situation is causing Québec businesses’ needs to evolve quickly and challenges to multiply. At Videotron Business and Fibrenoire, we are committed to supporting all our customers as they get ready to relaunch their activities. Discover the various measures, offers, and solutions we have implemented to help businesses of all kinds across Québec—big and small—rise to the challenges that come with our new reality.
The Uninstaller module is Revo Uninstaller ‘s primary feature for situations when a program won’t uninstall normally or when you have some doubts that a program has not been uninstalled completely.
Also when a program is uninstalled, often times there are multiple files, folders, and/or Registry entries left on your system, which can cause various issues if not removed. This happens more frequently than you might think.
Revo Uninstaller acts as both a replacement and a supplement to the built-in functionality in Windows by first running the built-in uninstaller for the program, and then scanning for leftover data afterwards, making it your best choice when it comes to completely remove stubborn programs, temporary files, and other unnecessary program data that is left behind after the standard uninstall process.
Applications and an operating system come with your computer, tablet, and phone. So, why not on your server? HPE is redefining the small business server by offering ClearOS with HPE ProLiant servers. ClearOS is a simple, open, and affordable operating system with an intuitive graphical web-based user interface and an application marketplace with over 100 apps to choose from, with more being added every day. Leveraging open source software, you decide what applications you need and only pay for the applications and support you want.
HPE and ClearCenter are making it easy for small, home, remote, and branch offices to have a server ready to use, out of the box, at no additional cost. HPE ProLiant integrated with ClearOS offers a simple, affordable, and secure experience. Building the IT solution that is just right for you has never been easier.
Powered by ClouDNS – ClearOS – Videotron Ltee, Montreal, Quebec
I really hope that! Ya! virtualmin will work on Centos 8!
Keep it on!
Installing rkhunter 1.4.6 on CentOS 7
I think that rkhunter is a valuable tool no matter the distribution that is used.
In CentOS 7 rkhunter 1.4.6 is found in the EPEL repository, we must make sure that this is available to use first:
$ sudo yum install -y epel-release
The install then is straight forward using yum.
$ sudo yum install rkhunter $ sudo rkhunter --update $ sudo rkhunter --propupd
We may also want to manually copy the /etc/passwd and /etc/group file to /var/lib/rkhunter. I gerenerally do not as they are copied in the first scan. The ubuntu install makes copies of these files for you.
If we don’t the first scan will warn that the group file and passwd file could have changed.
$ sudo rkhunter --check --sk ... Performing group and account checks Checking for passwd file [ Found ] Checking for root equivalent (UID 0) accounts [ None found ] Checking for passwordless accounts [ None found ] Checking for passwd file changes [ Warning ] Checking for group file changes [ Warning ] Checking root account shell history files [ OK ]
Further details can be found in the log file /var/log/rkhunter/rkhunter.log. Note that with rkhunter 1.4.6 on CentOS 7 we have the extra rkhunter log directory. As this is the first scan though, we know that the reference files did not exist.
They will exist now and on a second running the warning will not show. Of course, adding a new user will trigger the warning again but will also update the reference files, /var/lib/rkhunter/passwd and /var/lib/rkhunter/group. Each check will update the references.
By default the CentOS install does not check root access in SSH. We should enable this by editong /etc/rkhunter.conf. Look for the line:
Change the line to read:
The file /etc/ssh/sshd_config can be configured with:
Once set, restart the sshd service with:
$ sudo systemctl restart sshd
Running the rkhunter check now will report SSH root login as secured. The execution of rkhunter is enabled with cron by default.
Lynis is a security auditing tool for UNIX derivatives like Linux, macOS, BSD, Solaris, AIX, and others.
It performs an in-depth security scan. Software packages are available via https://packages.cisofy.com.
Michael Boelen is company founder and responsible for defining strategy and development efforts. He is a specialist in the field of Linux and UNIX security. Work experience includes small to Fortune 500 companies (Philips, T-Systems, and ASML).
Contributions to the field include open source security tools like Rootkit Hunter (rkhunter) and Lynis. He is also a regular contributor to our blog Linux Audit, covering Linux security.
Assuming that you have a running centos 7 server using webmin + virtualmin with a qualified domain name.
Mattermost has a simple web interface that can be used for administration as well as instant messaging. Besides that, there are various chat clients are available as Desktop and Mobile Apps for Mattermost chat server.
In this article, we are installing Mattermost 5 on CentOS 7 server. We are also installing PostgreSQL 11, as a prerequisite of Mattermost server software.
Install PostgreSQL yum repository as follows:
[root@easy-admin ~]# rpm -ivh https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
The same PostgreSQL package provides the yum repositories for various versions of PostgreSQL database.
Therefore, we are disabling the PostgreSQL yum repositories other than version 11 as follows.
[root@easy-admin ~]# yum-config-manager –disable pgdg10 pgdg94 pgdg95 pgdg96
Build yum cache for PostgreSQL repository.
[root@easy-admin ~]# yum makecache fast
Install PostgreSQL client and server packages using yum command.
[root@easy-admin ~]# yum install -y postgresql11 postgresql11-server
Initialize PostgreSQL database instance as follows.
[root@easy-admin ~]# /usr/pgsql-11/bin/postgresql-11-setup initdb
Edit pg_hba.conf file to allow md5 based user authentication.
[root@easy-admin ~]# nano /var/lib/pgsql/11/data/pg_hba.conf
Find following directive:
host all all 127.0.0.1/32 ident
and update it as:
host all all 127.0.0.1/32 md5
Enable and start PostgreSQL service.
[root@easy-admin ~]# systemctl enable postgresql-11.service
[root@easy-admin ~]# systemctl start postgresql-11.service
Connect as postgres user and set password for admin user.
[root@easy-admin ~]# su – postgres
Type “help” for help.
postgres=# ALTER USER postgres WITH PASSWORD ‘123’;
Create the Mattermost database.
postgres=# CREATE DATABASE mattermost;
Create the Mattermost user.
postgres=# CREATE USER mmuser WITH PASSWORD ‘123’;
Grant all privileges on mattermost database to mmuser.
postgres=# GRANT ALL PRIVILEGES ON DATABASE mattermost to mmuser;
Exit from psql and logout from postgres user.
PostgreSQL 11 has been installed on CentOS 7 server.
Installing Mattermost 5 on CentOS 7 server:
Download Mattermost software using wget command.
[root@easy-admin ~]# cd /tmp
[root@easy-admin ~]# wget https://releases.mattermost.com/5.26.1/mattermost-5.26.1-linux-amd64.tar.gz
Extract downloaded TAR file using following command.
[root@easy-admin ~]# tar -C /opt -xvf mattermost-5.26.1-linux-amd64.tar.gz
Create the storage directory for Mattermost files. This storage directory is used to store files and images posted by Mattermost users.
[root@easy-admin ~]# cd
[root@easy-admin ~]# mkdir /opt/mattermost/data
Create OS user and group for Mattermost software.
[root@easy-admin ~]# useradd –system –user-group mattermost
Adjust file permissions and ownership of /opt/mattermost directory.
[root@easy-admin ~]# chown -R mattermost:mattermost /opt/mattermost [root@easy-admin ~]# chmod -R g+w /opt/mattermost
Edit /opt/mattermost/config/config.json file to set PostgreSQL database configurations.
[root@easy-admin ~]# nano /opt/mattermost/config/config.json
Search for “SqlSettings” section and update following directives therein.
“DriverName”: “postgres”, “DataSource”: “postgres://mmuser:firstname.lastname@example.org:5432/mattermost?sslmode=disable&connect_timeout=10”,
Testing Mattermost configurations by executing mattermost command.
[root@easy-admin ~]# cd /opt/mattermost/
[root@easy-admin ~]# sudo -u mattermost ./bin/mattermost
* Go get yourself a cupof coffee and let it run a bit,
The server should run now!
Create a systemd service unit for Mattermost.
[root@easy-admin ~]# cd
[root@easy-admin ~]# nano /usr/lib/systemd/system/mattermost
…and define the service unit directives as follows.
After=syslog.target network.target postgresql-11.service
Save and close Nano.
Enable and start mattermost.service.
[root@easy-admin ~]# systemctl enable mattermost.service
[root@easy-admin ~]# systemctl start mattermost.service
Allow Mattermost service port in Linux firewall (I use CSF).
[root@easy-admin ~]# firewall-cmd –permanent –add-port=8065/tcp
[root@easy-admin ~]# firewall-cmd –reload
Open your browser and go to http://yourdomain:8065
Fill out the information requested!
This will work on the latest Mattermost 5.26.1 release.
Hope you enjoy!
Boot up your PC using your windows 10 install disk or usb
Choose Repair your computer
Go in Advanced Option
Select the Command Prompt option
DISKPART > list volume
Choose your biggest partition or where your system32 directory is located
Type the following in the command prompt
> move d:\windows\system32\utilman.exe d:\windows\system32\utilman.exe.bak
> copy d:\windows\system32\cmd.exe d:\windows\system32\utilman.exe
> wpeutil reboot
Click on Easy of Access
You are now in the dos prompt
net user fullaccess /add
net localgroup administrators fullaccess password /add
Select fullaccess user
Go in Control Panel
Click on user account
Select the account you wish to reset the password
Go back to /system32/
copy to your desktop utilman.exe.bak
rename it on your desktop to utilman.exe
copy the file back to /system32/
Maybe it will work, maybe not! The last resort would be to fetch the user data on a backup usb drive and re-install the hole thing!
DIRECTOR: Stefan Malešević
CAST: Marta Bjelica, Dražen Pavlović, Nabi Tang, Vuk Janošević, Radoje Čupić
Jovana works at a bakery in the small town where she lives with her father. Her somewhat shy peer Marko is supposed to follow in his own father’s footsteps and become a truck driver. But the events of one night change both their lives…