Source: https://zulfah.my/files/openvpnsetup/vpn_install.txt Got this while surfing the internet. A no brainer way to install and setup OpenVPN in CentOS. The only thing left is to open port 1194/udp 1337/udp from firewall / router yum update -y && yum -y install nano unzip wget gcc make rpm-build autoconf.noarch zlib-devel pam-devel openssl-devel cd /home wget http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm && […]
SSH tunelling is usually used to avoid firewall restriction or to ensure point-to-point encrypted communication. For example, if you want to send email to smtp server “smtp.yourserver.com” on port 587, but your organization currently blocking smtp port 25 and 587, then you can benefit from SSH tunelling to avoid from being blocked. To get around […]
IPdeny.com is a service which offers a free collection of Regional and Country IP address blocks list. The IP address blocks is useful for application developer and system administrator to enhance their system. For example, application developer can use the information redirect users from certain countries to regional websites or pages, or a system administrator […]
Secured Shell or SSH is a great way to enable a secure login for your UNIX / Linux Box. However there are precaution that you should take in order to properly secure SSH daemon from being scanned or attacked by script kiddies or automated bots. This week I’m going to write a series of article […]
Desktop Ubuntu users may have several ways to generate entropy relatively secure GPG keys (=>2048 bits), usually by moving the mouse and by typing random words. However this creates certain problem, for command-line user (especially those who are connecting through remote VPS connection). Here’s a tip on how to produce enough entropy for GPG key […]
After long and careful consideration, I decided to enable CloudFlare for my blog. CloudFlare is a content delivery network which aims to enhance website security and performance. CloudFlare CDN offers protection againts many forms of malicious activity including: spammers, email harvesters, SQL Injection, XSS, denial-of-service attack and suspicious web requests. Therefore saving valueable bandwidth from […]