patching linux servers

Article Title: How to set up Mail servers in 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. We use Red Hat Linux 9.0 as an examp

192.168.0.0/24--dport 111-j ACCEPTIptables-a input-i eth0-p tcp-s 140.0.0.0/8--dport 111-j ACCEPTIptables-a input-i eth0-p udp-s 140.0.0.0/8--dport 111-j ACCEPT3, in order to prevent possible Dos attacks, it is necessary to set the NFSD copy number reasonably.4, modify/etc/hosts.allow and/etc/hosts.deny to limit the purpose of the client/etc/hosts.allowPortmap:192.168.0.0/255.255.255.0:allowPortmap:140.116.44.125:allow/etc/hosts.denyPortmap:ALL:deny5. Change the default NFS portNFS uses 111 por

How can we solve the problem of Linux malware plaguing servers? Linux may not have the same malware problems as other platforms you are familiar with, but there are still some problems that plague Linux administrators. What is the best open-source software for monitoring malware on

How to Configure NFS servers in two LINUX systems-Linux Enterprise applications-Linux server application information. For more information, see the following. I. Installing an NFS server Check whether two software packages nfs-utils and portmap are installed in linux (the t

Article Title: how to configure NFS servers in two Linux systems. 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. I. Installing an NFS server Check whether two software packages nfs

Everyone knows the compiling steps of various network server programs and knows that there are two types of network servers: cyclic services and concurrent services. Here is a summary of the source code.First of all, the process of Loop Network Server programming is as follows: This type of server model is a typical Loop Service. Without the multi-process/thread technology, the Service throughput is limited. As you can see, if the data of the previous

At present, many users use Linux servers, but the current network environment is not very calm, and there are always malicious attacks. At ordinary times, some friends may encounter the problem of server hacking. After collecting and sorting out relevant materials, I have found a solution for Linux Server hacking, I hope you will have a lot to learn. If you have

In fact, every hacker has his own unique method. I have collected a lot of information about intrusions into the website server, but because of the actual situation, many methods are often ineffective. It can be seen that the situation of each website is different, and intruders need to treat it differently. Assume that the line in Shenzhen is much better than that in Beijing, which makes it easy for the dictionary to use, so that users in Shenzhen can use this advantage to attack passwords onli

"‘(51) Delete a scheduled taskansible web_server -m cron -a ‘name="a job for reboot" state=absent‘(52) Mount Partitionansible web_server -m mount -a ‘name=/data src=/dev/sdb1 fstype=ext4 opts=rw state=mounted‘(53) Unmount partitionansible web_server -m mount -a ‘name=/data state=unmounted‘(54) Ensure that a partition is mounted and mounted if it is notansible web_server -m mount -a ‘name=/data src=/dev/sdb1 fstype=ext4 state=present‘For more information on playbook, please continue to follow my

Common Linux Driver selection for Dell servers-Linux Enterprise Application-Linux server application information. The following is a detailed description. The main driver is Nic and RAID card. Generally, you can use commands such as lspci, lsmod (module driver), and dmesg. 1. 1X50 series: 1750 RAID card Fusion MPT de

corresponding server-side caching rules, which can greatly improve the performance of the site. Therefore, for PHP programs that are deployed on Linux servers, we recommend that you turn on Use gzip Web compression when the server is supported.second, the Web server processing HTTP compression process is as follows:1. After the Web server receives the HTTP request from the browser, check whether the browse

Everyone's windows machine may often install some anti-virus software or something to prevent poisoning, but on Linux how should we prevent these?We often encounter this kind of problem in the interview process, so what should we answer to appear to have both logic and depth?First identify the way we receive attacks, and what channels we use to attack our Linux servers:BecauseThe Trojan horse under

for the password, after we enter the Linux server on the user's login password, the www.linuxidc.com file will be uploaded to the Linux server/home/hollyfee directory.Here's how:C:\Documents and SETTINGS\ADMINISTRATOR>PSCP E:\javaWP\new.txt [email protected]:/home/hollyfee[email protected] ' s password:New.txt | 0 KB | 0.0 kb/s | eta:00:00:00 | 100%C:\Documents and Settings\administrator>Two

Scp implements file transfer between Mac and Linux servers 1. upload files to Linux server on mac Scp file name username @ Server ip: target pathFor example: scp/Users/test/testFile test@www.bkjia.com:/test/ 2. Upload the folder to the Linux server on mac, which is more-r than uploading files. Scp-r folder director

. 650) this.width=650; "Style=" background-image:none; border-right-0px; padding-left:0px; padding-right:0px; border-top-width:0px; border-bottom-width:0px; border-left-width:0px; padding-top:0px "title=" image "border=" 0 "alt=" image "src=" http://s3.51cto.com/wyfs02/M02/58/CA/ Wkiom1s8m0vxrn-kaabxpqveijw720.jpg "width=" 244 "height=" 193 "/> traggers: Used to flag which monitoring items need to trigger warning and problem thresholds, associated with corresponding monit

Let's take a look.Linux iptablesAdd multipleFtpThe specific method of server ing. The following two steps are involved: 1. First, convert the source addresses of the three ftp servers to those of the gateway. 192.168.0.254 is the gateway 10.0.0.0/24 is the network segment Iptables-t nat-a postrouting-s 10.0.0.0/24 -- sport 20, 21-j SNAT -- to-source 192.168.0.254 If the gateway is a dynamic IP address Iptables-t nat-a postrouting-s 10.0.0.0/24 -- spor

Statistics on linux servers: 1) number of port 80 connections: www.2cto. comnetstat-nat | grep-I quot; 80 quot; | wc-l12) count httpd protocol connections ps-ef | grephttpd | wc-l13), statistics already... Statistics on linux servers: 1) number of port 80 connections: www.2cto.com netstat-nat | grep-I "80" | wc-l12)