Cloud Applications

Brute-force ssh cracking prevention has always been a problem. in the face of the red ssh logon failure records displayed on the full screen in auth. log displayed by Vim, you can either tolerate or change the port number or fail2ban. Changing the

You know, you get used to ipconfig in windows. it is a lot of trouble to view the IP address in CentOS. The information collected today focuses on solving the IP port problem: view IPifconfigeth0 → view the IP address, but the output information is

Firewall refers to a combination of components set between different networks or network security domains, which enhances the security of the internal network of the organization. It uses the access control mechanism to determine which internal

Most of the information about inode is translated as an index node. in the ext3 file system, adjust the inodenumber of the disk. Here we only adjust the inodenumber parameter. if you want to adjust inodesize or blocksize, you can use the mkfs. ext3

Let's configure a filter table firewall. (1) view the settings of IPTABLES on the local machine [root @ tp ~] # Iptables-L-nChainINPUT (policyACCEPT) targetprotoptsourcedestinationChainFORWARD (policyACCEPT) targetprotoptsou we will configure a

Five rules of iptables: three rule tables of PREROUTINGFORWARDPOSTROUTINGINPUTOUTPUTiptables: five rule chains are included in three rule tables: filter for packets: INPUT, FORWARD, OUTPUTnat: address Translation: PREROUTING, POSTROUTING, and

Modprobeip_nat_ftpmodprobeip_conntrack_ftpiptables-AINPUT-ptcp -- dport21-jACCEPTiptables-AOUTPUT-mstate -- stateESTABLISHED, RELATED-jACCEPTiptables-AINPUT-mstate -- Modprobe ip_nat_ftpModprobe ip_conntrack_ftpIptables-A input-p tcp -- dport 21-j

I. As we all know, ARP is a link layer Address Resolution Protocol, which uses the IP address as the key value to query the MAC address of the host with this IP address. The details of the Protocol are not detailed. you can read RFC or textbooks.

(1). check whether sambarpm-qa | grepsamba is installed. if samba-common... appears ........... Samba (2) has been installed. remove the read-only attribute of the smb. conf file and change it to modifiable. You must first enter the su command with

Currently, there are three main types of firewalls: packet filtering, application proxy, and status detection packet filtering firewalls: static packet filtering firewalls are no longer available in the market, replace it with the dynamic packet

LVM (LogiclVolumeManager) and logical volume manager. by using the logical volume manager to manage hard disk storage devices, you can dynamically divide and adjust the hard disk space. I. basic concepts 1. physical volume ----- PV (PhysicalVolume)

Linux file management-compression and decompression command: tar format: tar option file directory list function: Package and back up the file directory www.2cto.com option: -c create a new archive file-r append a file to the end of the archive file-

Enable the ftp service to install oracleRDBMS under linuxredhat. tar software is required to find ftp unavailable. As a result, google. Environment: www.2cto.com [oracle @ RPS-SERVER-1 ~] $ Uname-aLinuxRPS-SERVER-12.6.18-194.el5 #1... In linux

The script command in linux records that the terminal session runs scriptscreen in ubuntu or other linux. log, record the screen information to screen. log, record until exit, a good way to record the screen log & hellip; www.2cto.com # scriptscreen.

In linux, the RPM Package obtained from the tar package is just completed from a tar package to the RPM Package. record the following process to avoid forgetting. Www.2cto.com manually uses the tar package as an RPM Package. we need to write a spec

For ubuntu and win7 systems, you can use wubi to install windows in ubuntu to fix the ubuntu system boot menu. Method 1. download EasyBCD and install www.2cto. com2. copy the files in the winboot folder to the root directory of win7. 3. use the

How to use minicom Super Terminal in ubuntu my system environment is ubuntu12.04www. 2cto. com1: Download and install minicom # sudoapt-getinstallminicom2: run minicom # sudominicom-s // command to enter the configuration interface (or directly...

HP-UNIX system downtime in the morning when db routine inspection found a node 2 down. First, check the alter of Checkpoint 2. no discovery is found, and the crs resources are in offline status. it can be determined that the system is down and there

For Ubuntu and XP dual-system grub2, when the default startup item is set to XP and the dual-system is installed, you will always want to enable a system to start by default. after Ubuntu and XP dual-system are installed, when the system is started,

Difference between su and su-commands I used to use root directly and seldom use su. only a few days ago I found that su and su-commands are essentially different! Most of the default accounts of www.2cto.com Linux distributions are normal users. to