OpenVPN on 443

SSL VPN? Lately I’ve been working on a project where security is very important. In order to connect to the hosting provider I needed to use a specific VPN provided by FortiNet. What’s interesting about this VPN solution is that apparently it uses HTTPS. this gave me the idea to…
linux security

Removing old kernels

On Debian/Ubuntu we would need to search for installed kernel packages, something like this: root@server:~# dpkg --list |grep linux-image ii  linux-image-3.2.0-23-generic         3.2.0-23.36                                      Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii  linux-image-3.2.0-56-generic         3.2.0-56.86                                      Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii  linux-image-3.2.0-57-generic         3.2.0-57.87                                     …
linux

RHEL (CentOS) – changing Apache’s MPMs

Well, in EL6 when we wanted to change Apache’s MPMs we would edit /etc/sysconfig/httpd and set the HTTPD variable with the binary needed.It looks something like: HTTPD=/usr/sbin/httpd.worker To see the available options we could type the following command: [root@server ~]# ls  /usr/sbin/httpd* /usr/sbin/httpd  /usr/sbin/httpd.event  /usr/sbin/httpd.worker The simple httpd binary uses…
linux

Centos7 – reversing to classic iptables

First of all we need to deactivate FirewallD systemctl disable firewalld.service Then we install the package called iptables-services yum install iptables-services edit /etc/sysconfig/iptables then start classic iptables and make it load on each reboot systemctl start iptables.service systemctl enable iptables
linux

Testing CentOS 7 – Lots have changed

So, just installed the newly launched CentOS 7 and oh boy! Lot’s have changed.Honestly I don’t know if it’s for the good or bad. As I observed the distro moves really fast, and it starts reeeeallly fast! The first notable change is that the default filesystem changed to XFS. Therefore…
linux