service iptables save

I. INTRODUCTION to SQL language DDL: tables, views, indexes, trigger operations, etc. CREATEALTERDROP statement DML: data operation. SELECTINSERTUPDATEDELETEDCL: permission settings. GRANTREVOKE database access different languages use different

Iptables firewall configuration 1. firewall introduction 1. Functions: 1) configure the firewall through the source port, source IP address, source MAC address, specific tag in the package, and target iptables 1. firewall introduction 1. functions: 1

1. install the required Library CentOS: 1yumupdate2yuminstallpam-developens 1. install the required Library CentOS: 1 Yum update 2 Yum install pam-devel openssl-devel make gcc 2. download strongswan and

Step 2: log on to the centos system using ssh or the root user with the highest privilege on the local machine, run & ldquo; iptables-F & rdquo; and confirm. After the command is confirmed, no success prompt is displayed. Step 2: run the & ldquo;

System environment: This system is based on the system. [Root @ gjp ~] # Cat/etc/redhat-releaseCentOSrelease6.4 (Final) tool: dkms-2.0.17.5-1.noarch.rpmkernel_ppp_mppe-1.0.2-3dkms.noarch.rpmpptpd-1.3.4-2.rhel6.i386.rpmppp-2.4.5-17.0.rhel6. System

This morning, the server was under ddos attack. Fortunately, the other party only used a computer without thousands of Trojans. Otherwise, the server would crash. I found a tutorial on the Internet and solved it successfully. So I recorded the

I. basic configuration Configure two NICs for the Squid Proxy Server WAN: eth0: 10.10.10.200 gateway and DNS must be configured to allow Internet access LAN: eth1: 172.161.254 do not need to configure gateway or DNS Clinet: 172.16.1.2/24 gateway and

1. Check whether Samba is installed on CentOS. # Rpm-qa | grep samba Note the version number. If the main installation package of samba is missing, you need to download and install the main installation package based on the installed version, or

IPTABLES rules: deny all links first. Available IPTABLES operations (1)-L: first, all the policies in the selected chain are IPTABLES-t filter-L (2)-A: (chain name): Add A new policy to the end of the selected chain. For example, IPTABLES-t filter-a

The iptables Operation Command netfilter (iptables) netfilter works in the kernel software to implement fpihiptables of data packets. It is used to control the netfilter packet filtering Firewall (layer-4 TCP/IP. the application layer provides

Article Title: configuration of squid service on Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The

Installation and configuration of Tomcat on RedHat Linux The following Linux versions are used: RedHat Enterprise Linux 7.0 x86_64 and Tomcat-7.0.54. 1. Download JDK and

Use iSCSI Target to create centralized security storage (1) ISCSI is a block-level protocol used to share original storage devices through TCP/IP networks, you can use an existing IP address and ethernet address, such as a nic, vswitch, or vro, to

Getting started with Linux: Enable the port on CentOS or RHEL Firewall Q: I am running a web page or file server on CentOS and want to remotely access the server. Therefore, I need to change the firewall rules to allow access to a TCP port on the

Deploy VNC Server in CentOS6 VNC (Virtual Network Computer) is short for Virtual Network Computer. VNC is a free open-source software based on UNIX and Linux operating systems. It has powerful remote control capabilities and is highly efficient and

General Production Environment Linux Server Configuration 1. Selection of the Linux server system version in the production environment Select the 64-bit Linux operating system of CentOS6.5 CentOS (Community Enterprise Operating System) is one of

Build a VPN Server under CentOS6.2 1.Install using yumPpp: $ yuminstallppp-y 2. Download and install pptpd. You can obtain it on this website.Http://poptop.sourceforge.net/yum/stable/packages/: (Depends on the number of digits in the operating

Set the Linux security environment for running Java-general Linux technology-Linux programming and kernel information. The following is a detailed description. Enterprise Java expert Dennis Sosnoski elaborated on his point of view on how Java Server

  Service iptables start does not respond;   [Root @ lt ~] # Service iptables status Firewall stopped [Root @ lt ~] # Service iptables start [Root @ lt ~] # Service iptables status Firewall stopped   For example, the configuration file is not

Disclaimer: This blog post from Baidu Experience http://jingyan.baidu.com/article/3c48dd34709e70e10be35835.html, thank you to share!1. Check the Linux versionCat/etc/issue　　2. Check if Telnet is already installedRpm-qa | grep telnet　The above