After installing RHEL/CentOS 7 minimal and sleeping with your u shaped body pillow, You may not able to connect network in that machine. This will happen because Ethernet interfaces are not enabled by default. This guide explain you to setup network on RHEL/CentOS 7. Setup network on CentOS 7 minimal First, type “nmcli d” command in your terminal for quick list ethernet card installed on your machine: “nmcli d” command output Type “nmtui” command in your terminal to open Network manager. After opening Network manager chose “Edit connection” and press Enter (Use TAB button for choosing options). CentOS_7 Network manager screen Now choose you network interfaces and click “Edit” Edit your network interfaces DHCP configuration Choose “Automatic” in IPv4 CONFIGURATION and check Automatically connect check box and press OK and quit from Network manager. Set ip adress using DHCP Reset network services: service network restart Now your server will get IP Address from DHCP . CentOS 7 check ip address
In Tomcat 7, the password in the setting file: tomcat-users.xml is displayed as string encrypted by md5. In server.xml file: <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase" digest="md5"/> </Realm> echo -n yourpassword | md5sum make sure you change the password in tomcat-users.xml with md5 encrypted string.
You just got your new CentOS dedicated server, and you notice that times in your logs aren’t quite right. You check the time from the command line (run date), and find that the timezone is set to US Eastern or some other timezone. How do you get this changed? Unfortunately, this is not an easy thing to figure out. Fortunately though, it’s not hard to do with the right directions. Please note that you have to have root access to be able to make the changes detailed below. There are a series of time zone files located at /usr/share/zoneinfo. Select the appropriate named timezone for your location. For my location, Oklahoma, USA, I actually have two that I can select from: America/Chicago or US/Central. Make note of the appropriate folder and file for your timezone. The active timezone used on your system is in the /etc/localtime file. The default will vary depending on your server host but often seems to be EST or EDT (depending on the time of year you are checking). We simply need to replace this file with the file we selected in the previous step. Now, I say replace, but I actually recommend creating a link to the pertinent file rather than actually making a copy. Let me explain the reasoning for this quickly. A crucial part of the timezone shift calculations is the daylight savings calculations. Many people don’t realize this, but the daylight savings days were changed in 2007. When this change happened, all servers needed to be updated with new zoneinfo files.…
Introduction VPN, or virtual private network, is a secure method of connecting remote internet resources together as if they were under the same LAN. OpenVPN is a popular implementation that works on Linux, Windows, and Mac operating systems and can be utilized to create complex, encrypted networks between physically dispersed servers which you can change your screens from Orlando mobile led screen hire for a clearer use of your PC. The OpenVPN Access Server is a solution built on top of traditional OpenVPN that is used as a complete portal for managing connections, users, and interfaces. It provides the underlying VPN instance, a web interface for managing the suite, and a client that can be used within a web browser. In this guide, we'll install and configure the OpenVPN Access Server on a CentOS 6.5 VPS instance. Download and Install Packages We can obtain the OpenVPN Access Server package for CentOS from the project's website. Right click on the package that matches your version of CentOS and your machine's architecture. Select the "copy link address" item or whatever option is closest. On your CentOS droplet, download the package with curl -O (that's the letter "o" not a zero) followed by the URL you copied from the page. In my case, this turned out to be: cd ~ curl -O http://swupdate.openvpn.org/as/openvpn-as-2.0.5-CentOS6.x86_64.rpm When the package has been downloaded, you can install it with using the rpmcommand: sudo rpm -i openvpn-as-2.0.5-CentOS6.x86_64.rpm After installing the package, an administration account is created called openvpn. However, no password has been set. Set a password for the administrator's account by typing: sudo…
About Fail2Ban Servers do not exist in isolation, and those servers with only the most basic SSH configuration can be vulnerable to brute force attacks. fail2ban provides a way to automatically protect the server from malicious signs. The program works by scanning through log files and reacting to offending actions such as repeated failed login attempts. Step One—Install Fail2Ban Because fail2ban is not available from CentOS, we should start by downloading the EPEL repository: rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm Follow up by installing fail2ban: yum install fail2ban Step Two—Copy the Configuration File The default fail2ban configuration file is location at /etc/fail2ban/jail.conf. The configuration work should not be done in that file, however, and we should instead make a local copy of it. cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local After the file is copied, you can make all of your changes within the new jail.local file. Many of possible services that may need protection are in the file already. Each is located in its own section, configured and turned off. Step Three—Configure defaults in Jail.Local Open up the the new fail2ban configuration file: vi /etc/fail2ban/jail.local The first section of defaults covers the basic rules that fail2ban will follow. If you want to set up more nuanced protection for your virtual private server, you can customize the details in each section. You can see the default section below. [DEFAULT] # "ignoreip" can be an IP address, a CIDR mask or a DNS host. Fail2ban will not # ban a host which matches an address in this list. Several addresses can be # defined using…
Author: Sandeep Verma Well… I am working on alternatives to make OWN CDN… I have few options to create such CDN * Google App Engine http://24ways.org/2008/using-google-app-engine-as-your-own-cdn http://www.digitalistic.com/2008/06/09/10-easy-steps-to-use-google-app-engine-as-your-own-cdn/
