Problem:
After configuring CentOS, I found that I could not access the Internet internally and could not ping the external IP.
Solution:
Check whether there is any problem with the network card settings and ensure that the IP address and GATEWAY are in the same network segment. Command: vim /etc/sysconfig/network-scripts/ifcfg-eth*.
(Recommended tutorial: centos usage tutorial)
Check whether the routing settings are correct. If there is no problem in the first step, then your IP and gateway can be pinged at this time. Use the command: route -n to view the routing settings of the system. For example: the IP address of my eth0 is 192.168.1.156 and the gateway is 192.168.1.2. If you want to connect to the external network address, there will be a route set as shown in the figure. The Destination is 0.0.0.0 at this time, indicating any address.
Check whether iptables (firewall) is configured correctly. If it is your own machine and there are no security requirements, you can turn off the firewall and run the command: service iptables stop
to set up a dns server. Command: vim etc/resolv.conf, add the following content: nameserver 8.8.8.8.
Finish!
Recommended related video tutorials: linux video tutorial
The above is the detailed content of The centos6.5 system cannot ping the external network. For more information, please follow other related articles on the PHP Chinese website!
CentOS's Departure: Choosing the Right AlternativeApr 29, 2025 am 12:04 AMAlternatives to CentOS include AlmaLinux, RockyLinux, and OracleLinux. 1.AlmaLinux and RockyLinux rebuild RHEL 1:1, providing high stability and compatibility, suitable for enterprise environments. 2. OracleLinux provides high performance through UEK, suitable for users who are familiar with the Oracle technology stack. 3. When choosing, stability, community support and package management should be considered.
CentOS's Replacement: Exploring the New OptionsApr 28, 2025 am 12:17 AMCentOS alternatives include RockyLinux, AlmaLinux, and OracleLinux. 1. RockyLinux and AlmaLinux provide stable distributions compatible with RHEL, suitable for users who need long-term support. 2. CentOSStream is suitable for users who focus on new features and development cycles. 3. OracleLinux is suitable for users who need enterprise-level support.
Replacing CentOS: Identifying Suitable ReplacementsApr 27, 2025 am 12:04 AMCentOS needs alternatives because CentOSStream no longer provides long-term support. Alternative options include: 1. RockyLinux, which provides 10 years of life cycle support, suitable for users who need stability. 2.AlmaLinux also provides 10 years of support and has strong community support. 3. OracleLinux, provides RHEL-compatible version, and flexible life cycle management.
The End of CentOS: Evaluating the ImpactApr 26, 2025 am 12:03 AMThe end of CentOS has had a significant impact on users, with users having the option of RHEL, AlmaLinux, Debian or Ubuntu as alternatives. 1. The migration cost is high, requiring time and money. 2. Community division affects open source projects. 3.RHEL provides commercial support, but it is costly. 4.AlmaLinux is similar to CentOS and has low migration costs. 5. Debian and Ubuntu need more time to adapt.
CentOS: An Explanation of the Decision-Making ProcessApr 25, 2025 am 12:03 AMCentOS is suitable as an enterprise-class server operating system because it is stable, secure and free. 1) It is based on RHEL and provides high compatibility with RHEL. 2) Use yum for package management to ensure that the software is easy to install and update. 3) The community regularly releases security patches, with a support cycle of up to 10 years.
The Discontinuation of CentOS: Understanding the FactorsApr 24, 2025 am 12:01 AMThe reason why CentOS stopped maintaining is RedHat's strategic change. User response strategies include: 1. Migrating to other distributions, such as UbuntuServer, Debian or RockyLinux; 2. Continue to use CentOS7 until June 2024; 3. Turning to CentOSStream; 4. Build solutions, such as custom distributions based on RHEL or using container technology.
CentOS: What Led to the Decision to End SupportApr 23, 2025 am 12:10 AMRedHatendedsupportforCentOStoshifttowardsacommerciallyfocusedmodelwithCentOSStream.1)CentOStransitionedtoCentOSStreamforRHELdevelopment.2)ThisencourageduserstomovetoRHEL.3)AlternativeslikeAlmaLinux,RockyLinux,andOracleLinuxemergedasreplacements.
Using CentOS: A Guide for System AdministratorsApr 22, 2025 am 12:04 AMCentOS is an open source operating system based on RedHatEnterpriseLinux, suitable for server environments. 1. Select the appropriate media and options during installation and configure network, firewall and user permissions. 2. Use useradd, usermod and systemctl commands to manage users and services, and update software packages regularly. 3. Basic operations include using yum installation software and systemctl management services, and advanced features such as SELinux to enhance security. 4. Check the system log to solve common errors. Optimizing performance requires monitoring resources and cleaning of unnecessary files.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Atom editor mac version download
The most popular open source editor
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
Zend Studio 13.0.1
Powerful PHP integrated development environment
