What is Minix3 ? MINIX 3 is a free, open-source, operating system designed to be highly reliable, flexible, and secure. It is based on a tiny microkernel running in kernel mode with the rest of the operating system running as a number of isolated, protected, processes in user mode. It runs on x86 and ARM…
If you are a developer and you’re working with several subdomains for development purposes, you can create a single virtualhost, without the need to add subdomains and restart/reload the apache web server. Directory structure (example): /var/www /var/www/project1.unixteacher.org /var/www/project2.unixteacher.org /var/www/project3.unixteacher.org /var/www/development.unixteacher.org One single virtualhost for any subdomain: <VirtualHost *> DocumentRoot /var/www ServerName unixteacher.org ServerAlias *.unixteacher.org CustomLog…
HTTP DoS Protection with Nginx through ngx_http_limit_conn_module and ngx_http_limit_req_module modules. The ngx_http_limit_conn_module module is used to limit the number of connections per the defined key, in particular, the number of connections from a single IP address. Not all connections are counted. A connection is counted only if it has a request processed by the server…
If you are running a recent Kernel, you can achieve this benefit by mounting the /proc filesystem with the new hidepid option. This option was added in Linux kernel 3.3 The proc filesystem is a pseudo-filesystem which provides an interface to kernel data structures. It is commonly mounted at /proc. Most of it is read-only,…
Hardware used in my test CPU: E3-1231 v3 CPU SPECS: 4 Core, 8 Threads – 3.40GHz Memory: 32 GB Storage: 4 x 240 GB SSD Force 3 Raid adapter: 3Ware 9750 Let’s beginning with os tuning. We will tweak sysctl.conf. # # file: ‘/etc/sysctl.conf’ # vm.swappiness = 0 vm.max_map_count = 262144 net.ipv4.tcp_wmem = 4096 65536…