patching linux servers

Q: Why do you want to find a different, why patch?A:In Linux applications, as DBAs, we know that MySQL runs on the Linux system, the most important pursuit of database is performance,"stability" is the weight of the heavy, so can not be changed in the system or change it, this time unless it is a last resort, otherwise it is On the original basis to change the line, that is, to the kernel and download some

, which device problem, unimpeded. Recently, the boss used root user to compile Qtopia in Rhel, and there was an issue with g++ error:g++: Error trying to exec ' cc1plus ': execvp:no such file or directoryWe think for a long time, get a non-authoritative explanation: Rhel does not allow root to compile Qtopia, with ordinary users do not have this problem.Background of this article:1, practice making patches and patching;2, the previous program code li

*****************************************************************************4th Step: Execute the patch command repeatedly.*****************************************************************************Execute the following command:For I in 3 4 5; DoPatch-p0 DonewhichPatch-p0 The command acts on the input patch file and upgrades all files and subdirectories in the corresponding old version of the kernel source code to the corresponding new version (in our case, the old version of the kernel sourc

In the first half of this year, we were working on a carrier project. The device specification was written by large manufacturers such as ZTE and Huawei, which had requirements for hot Patching. The operator has high requirements on the running time of the device, so it does not need to restart the program to change a small problem. So there is a hot Patching requirement: requires that the program can chang

* () function to initiate a DNS request that converts the host name to an IP address.Vulnerability HazardThis vulnerability could result in remote code execution, which could allow an attacker to gain full control of the system.Proof of vulnerabilityIn our tests, we wrote a POC, and when we sent a well-structured email to the server, we were able to get the shell of the remote Linux server, bypassing all the protections currently on 32-bit and 64-bit

[sizeof (temp.buffer)];memset (name, ' 0 ', Len);Name[len] = ' + ';retval = gethostbyname_r (name, resbuf, Temp.buffer, sizeof (Temp.buffer), result, herrno);if (strcmp (temp.canary, canary)! = 0) {puts ("vulnerable");exit (exit_success);} if (retval = = erange) {puts ("not vulnerable");exit (exit_success);} puts ("should not Happen");exit (exit_failure);} And then compile the execution#gcc check_yl.c-o cve-2015-0235./cve-2015-0235If the result of the output is:vulnerableIndicates that the syste

The three ping pass is to be able to transfer files.The No. 0 Lesson 5th Section _ Just contact the development Board's u-boot to build the use and constructs the Sourceinsight project:Uboot hit Patch: Uboot source code is not used in 2440, hit the patch can be used in 2440 (inside the virtual machine configuration, specifically used to Ls,cd,tar XJF u-boot-1.1.6 instructions), extracted and so on, forget to watch the video.SOURCE Insight Project: Operating software, easy to see Uboot source cod

Bash how to deal with the problem of security vulnerabilityOne: Vulnerability descriptionThe vulnerability stems from the special environment variables created before the bash shell that you invoke, which can contain code and be executed by bash.II: Software and systems identified for successful useAll Linux operating systems that install the version of Gun bash are less than or equal to 4.3.Three: Vulnerability detection method[Email protected] ~]# b

the Red Flag Linux system is released when it is announced to be compatible with the RPM package, and in the red flag provided by the tool CD, I see a lot of packages are Rhel 4, so you can determine, Red Flag Linux can at least support the RPM package in Rhel 4. If you're using an RPM package, it's easy to install, and it's annoying that servers and client and

How to make Linux servers more secure and linux servers more secureI run several Linux servers. I have one at home, serving as a file server, and three active servers used as my Site Se

, unable to pass the directory, to pass the directory can be used PSFTPCan open remote host, CD change remote directory, LCD change local directory, ls view remote file list, put upload file, get download file and other commandsTo upload files from Windows to a Linux server using the Psftp method:Of course, you can also use the Putty installation package with the Psftp.exe tool, the primary usage is the same as PSCP:D:\Program files\putty>pscp-sftp [E

Summary of common operations on Linux system domain servers and summary of linux domain servers 1. domain account a grants administrator permissions to local computer B ---- used to solve problems such as software installation failure caused by insufficient domain account PermissionsOn the Domain Server-AD user and co

Multiple linux servers ssh have no password for each other, and multiple linux servers ssh Server A: 10.1.11.82 Server B: 10.1.11.210 Objective: to allow server A to access server B without A password Operation logic: to allow server A to access server B without A password, you only needGenerate A key pair on server,U

Copy files remotely on two linux servers and copy files on two linux servers1. copy the files from the remote machine to the local machine. Scp-r root@10.10.15.25:/bea/gg copy remote/bea to/gg -R Recursively copy entire directories. Recursively copy the entire directoryRoot@10.10.15.25:/bea remote machine directory /Gg local directory 2. copy local files

Use PSSH to batch operate Linux servers and psshlinux serversIntroduction When there are more servers, one problem is how to quickly operate multiple servers in batches. I found the PSSH tool on the Internet. I tried it and found it useful. I recommend it to you. Pssh is a lightweight management tool written in python

Use telnet to manage remote Linux servers and telnetlinux servers SSH requires public/private key pair configuration, which is cumbersome. In order to quickly log on to a remote Linux host from any device, you can use telnet to connect to it. Warning telnet is transmitted in plain text. If the user password is intercep

the address of the index node. After extraction, we can run "strings" to view the content: These examples only help you analyze the damaged host. I hope this article will successfully reveal some situations of PHP vulnerabilities and the resulting Script Injection examples, in addition to ensuring correct patching and Hardening for Internet-facing servers, we also need to know how to quickly track such at

You know which linux commands can upload files to remote linux servers and linux FilesIn most cases, Enterprise Services are basically deployed on linux servers.TestStudents must master basic linux commands and at least know how t

This paper briefly introduces how to extend the console of Linux server through the common COM port, which is practical and simple, not limited by the server network, and can easily manage the Linux server in the actual production environment. When it comes to managing Linux servers, there are many different ways to do

Windows-based visual tools for Batch Management of linux servers and linux Visualization Background: In terms of server O M, nearly a thousand LINUX servers need to be managed in a unified manner, for example, you can run commands on LI