firewall iptables

A newly configured server, installed CentOS6.3 system, after the installation of LNMP, the discovery Nginx process exists, and PHP parsing is normal, but with the allocation of independent IP to access the time found to be inaccessible.Check the

Main content : Refer to a number of articles on the web, the success of their own hands-on experiment, here in detail to record their own under the Kali Linux buildProcess, this article focuses on hands-on implementation, does not involve the

I love to toss. The Linux environment is installed in the local virtual machine. To configure the NIC file for Linux.As follows:Vi/etc/sysconfig/network-script/ifcfg-eth0;Just installed the system, no vim, just make the use of vim.Use the TAB key

Under Linux How to modify iptables open 80 port   recently in the environment of the local server, found that the site localhost can access the normal, with IP access can not access, often using CentOS friends, you may encounter the same problems

University has learned 3 years of Java, I do not want to learn Linux now, this is my first blog, of course, I am also a small white, many problems may be wrong, and is a few ridiculous mistakes, here hope you have patience to see the people put

Since the CentOS system has been installed before, can operate or configure the server, but sometimes because the server in the computer room or other places, we need to connect the past through the remote way, then we use Putty to connect the Linux

Write the play, in the Init 5 level, after running will actively generate two windows, the system and the system on the main services to monitor, and timely refresh, to share.650) this.width=650; "src="

Summary and application of Linux iptablesFirst, firewall, Iptables introduction1, the firewall is used for the implementation of Linux access control functions, it is divided into hardware or software firewall two kinds. Regardless of the network in

Network Time Protocol (NTP) is used to synchronize the system time of different hosts on the network. All hosts you manage can synchronize their time with a specified time server called an NTP server. On the other hand, an NTP server synchronizes

Recently in the server upper cache system, log the PHP installation memcached extension. # Installation Service Side Yum Install Memcached-yI. Launchpad Please download the latest version of Libmemcached (20150524) at

Nginx can be installed using the default packages of each platform, this article is to introduce the use of source code compilation installation, including specific compilation parameters information.Before the official start, the compilation

Friends who often use CentOS may encounter the same problems as me. The firewall is turned on and the 80 port is inaccessible, and the friend who just started learning CentOS can refer to it.Friends who often use CentOS may encounter the same

Introduction to load Balancing clusters? Mainstream open source software LVs, keepalived, Haproxy, Nginx, etc.? where LVs belongs to Layer 4 (Network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, also can be

I. Use the ntpdate command 1. When the server is linked to the extranet # CRONTAB-E Join a line: */1 * * * * ntpdate 210.72.145.44 210.72.145.44 for China National Time Service Center server address, so that the machine every 1 points can be

Rsync installation The latest version of the current rsync is 3.0.9. wget http://rsync.samba.org/ftp/rsync/rsync-3.0.9.tar.gz Tar-xvzf rsync-3.0.9.tar.gz; CD rsync-3.0.9;./configure; Make Make install Rsync Server-side

Server security issues are not complex, and the following principles prevent the most common attacks.Experienced administrators know that as the number of servers and users increases, the cost of user management will be greaterThe following name

The CentOS 7 mini version of the default installation cannot use the Ifconfig command. If it's not networked at this time, it's going to be bad. First look at the Internet configuration of CentOS7Modify File/etc/sysconfig/network-scripts/ifcfg-enp0

What is a firewallA firewall is a combination of components set up between different networks or network security domains, which enhances the security of the internal network of the organization.The firewall passes the access control mechanism,

　　First install the vsftpd-2.0.1-5.i386.rpm on the first CD in the Linux Enterprise Edition #rpm –ivh/media/cdrom/redhat/rpms/vsftpd-3.0.1-5.i386.rpm 　　Start the VSFTPD service #service vsftpd Start 　　Refreshing the firewall #iptables-F Such a

Compile and install httpd (CentOS-6) Ready to work: 1. Turn off firewall 6:service iptables stop;chkconfing iptables off7:systemctl Stop firewalld;systemctl Disable Firewalld There is another way: clear all rules to temporarily stop the