Explanation of CentOS7 firewall commands
The firewall in CentOS 7 is a very powerful function, but it has been upgraded in the firewall in CentOS 7. Let's take a look at the usage of the firewall in CentOS 7 in detail.
FirewallD provides dynamic
Enable, disable, and open the specified port of the CentOS 6.2 firewall. d/iptables stop: View 114 again at www.2cto.com. 80. *. *: 8080 (ip: 8080) was successful. However, it seems that security risks are greatly increased ...... Use/etc/init.
Use Firewall and centosfirewall in CentOS 7
In CentOS 7, a new service is introduced,FirewalldThe following figure shows the relationship and difference between Firewall and iptables.
To install it, you only need
yum install firewalld
If you need a
Environment:System hardware: VMware vsphere (cpu:2*4 core, memory 2G, dual NIC)System version: Centos-7.0-1406-x86_64-dvd.isoInstallation steps:1. Virtual system Installation1.1 Use the VMware virtual machine to read the ISO for installation.
(2) deploying a Linux environment (Centos + Nginx + Tomcat + Mysql)-firewall configuration
In my local testing practice, the following is a complete operating document for Centos + Nginx + Tomcat + Mysql on Linux. The record is as follows, we hope
1. Iptables configuration file & para;The default configuration file in RHEL/CentOS/Fedora Linux is:/Etc/sysconfig/iptables-the system executes the script to activate the firewall function by reading the file.2. Basic operation: Display the default
Use Firewall in CentOS 7
In CentOS 7, a new service is introduced,Firewalld, the following figure shows the relationship and difference between Firewall and iptables.
To install it, you only need
#yuminstallfirewalld
If you need a graphical
CentOS Study Notes-firewall iptables, centosiptablesLinux Firewall: iptables
Iptables is a packet filtering software, and more than 2.6 of the Linux kernel is this software. This Section selects the Linux private dish of laruence-Chapter 9 server
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
#/sbin/iptables-i input-p TCP--dport 80-j ACCEPT#/sbin/iptables-i input-p TCP--dport 22-j ACCEPT #/etc/rc.d/init.d/iptables save After restarting the computer, The firewall has already opened 80 and 222 ports by default. Temporarily shut down
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