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Static NAT (SNAT) object network obj-192.168.1.100  host 192.168.1.100  nat (inside,outside) s...

Downloading Nagios Core: https://www.nagios.org/downloads/nagios-core/thanks/?t=1500128149 Inst...

Add a service to logrotate vi /etc/logrotate.d/name_of_file /var/log/some_dir/somelog.log {  ...

  vim /etc/systemd/system/foo.service chmod +x /etc/systemd/system/foo.service [Unit] Descript...

Zones Pre-defined zones within firewalld are: drop: The lowest level of trust. All incoming c...

This is not a tutorial of how haproxy works, this is just some notes on a config i did, and some ...

WordPress version: Linux/cPanel: find /home/*/public_html/ -type f -iwholename "*/wp-includes/v...

This page is to share commands / arguments that makes life easier.   Rsync rsync -vaopHDS --st...

So you installed hyper-v and you need to configure your NIC with your public IP and your secondar...

Apache vhost vim /etc/httpd/conf/httpd.conf add ( include vhosts/*.conf ) at the bottom mkdir ...

Create raid: Raid levels can be changed with: --level=1 // --level=0 // --level=5 Raid 1 mdadm...

  To get a sorted list of email sender in exim mail queue. It will show the number of mails send...

If you have 2 files, a key and a crt, you can use the following command in linux/osx or cygwin wi...

iptables arguments -t = table, -X = del chain, -i = interface Deleting a line: iptables -L --l...

Normal grub install (root@server) # grub     GNU GRUB version 0.97 (640K lower / 3072K upper ...

Before starting the bootable media, if you are on a GTX 10XX, the interface will not load properl...

What is Fail2Ban: Fail2Ban is an intrusion prevention tool to prevent brute-force attacks or h...

If OS keeps booting in recovery, this is how you can fix it: Open the CMD in the windows live ...

Check raid card: lspci | grep -i raid Ubuntu/Debian: apt-get install alien # Convert to .deb ...

  SSL https://www.whynopadlock.com https://www.ssllabs.com/ssltest/ https://www.sslshopper.co...