pam

今天在工作上遇到一个问题，在做安全扫描的时候发现，openssh有比较多的漏洞，按照绿盟扫描器的建议需要升级到最新版本。但是生产环境升级的时候会遇到很多的问题，所以决定在测试环境下打成rpm包上传到生产环境下进行升级。 备份 在做所有的变更都要备份，如果有问题可以随时回滚。 mkdir /opensshbackup cd /opensshbackup mkdir -p /opensshbackup/ssh mkdir -p /opensshbackup/binssh mkdir -p /opensshbackup/sbinssh cp /etc/ssh/* /opensshbackup/ssh cp /etc/pam.d/sshd . cp /usr/bin/ssh* /opensshbackup/binssh cp /usr/sbin/ssh* /opensshbackup/sbinssh 安装基础依赖 yum install rpm-build zlib-devel openssl-devel gcc perl-devel pam-devel unzip wget -y 使用rpmbuild进行构建 解压包 tar xvf openssh-8.1p1.tar.gz cd openssh-8.1p1 创建一个目录SOURCES mkdir SOURCES cd SOURCES

总目录概览 目录 英文全名 用途 /bin Binaries 用于存放最常用的二进制命令 /boot Boot 包含引导Linux的重要文件，如grub和内核文件等 /dev Devices 所有设备都在该目录下，包括硬盘和显示器等 /etc etc 系统的所有配置文件都放在它下面 /home Home 存放个用户的家目录($HOME)及其文件和配置 /lib Libraries 系统的库文件，有点像Windows的Program Files /lost+found lost+found 用于存放系统异常时丢失的文件（如突然宕机），以利于恢复 /media Media 用于加载各种媒体，如光盘、软盘等 /mnt Mount 用于加载各种文件系统 /opt Optionally 用于存放安装的“可选”程序 /proc Processes 包含进程等信息，是内存的映射，不是真实目录 /root Root 该目录是root用户的家目录($HOME) /run Run 该目录是是系统每次重启时生成的tmpfs，其真正的链接是/var/run /sbin System-only binaries 用于存放系统专用的二进制命令 /srv Service 服务启动之后需要访问的数据目录 /sys System 用于存放系统信息 /tmp Temporary files 用于存放临时文件 /usr

I'm interested in writing a PAM module that would make use of a popular authentication mechanism for Unix logins. Most of my past programming experience has been in Python, and the system I'm interacting with already has a Python API. I googled around and found pam_python , which allows PAM modules to invoke the python intrepreter, therefore allowing PAM modules to be written essentially in Python. However, I've read that there are security risks when allowing a user to invoke Python code that runs with a higher access level than the user itself, such as SUID Python scripts. Are these concerns

Are there any working packages to change a linux user passwords using PHP? I've tried using PECL:PAM but theres an error when it tries to change the password. Edit: PHP code: echo pam_chpass($username, $password, $new_pass, &$error) ? 'good' : $error; PHP (echo) output: Permission denied (in pam_authenticate) From /var/log/auth (these are actually from before, the log doesn't seem to be working ATM for some reason yet to be determined): Jun 11 15:30:20 veda php: pam_unix(php:chauthtok): conversation failed Jun 11 15:30:20 veda php: pam_unix(php:chauthtok): password - (old) token not obtained

搞了下FTP服务器，基本上能遇到的问题都遇到了-。-! 先说步骤: 1.安装vsftpd软件包 sudo apt-get install vsftpd 2.打开配置文件 vim /etc/vsftpd.conf 3.修改参数 一些参数可以去掉注释激活，为了方便，你也可以注释全部，然后添加下面的设置 #这些设置系统默认是开启的，可以不管 listen = NO listen_ipv6 = YES dirmessage_enable = YES use_localtime = YES xferlog_enable = YES connect_from_port_20 = YES #下面的就要自定义设置了，建议系统默认的不管，然后复制下面的 #是否允许匿名访问，NO为不允许 anonymous_enable = NO #是否允许本地用户访问,就是linux本机中存在的用户，YES允许 local_enable = YES #是否开启写模式，YES为开启 write_enable = YES #新建文件权限，一般设置为022，那么新建后的文件的权限就是777 - 022 = 755 local_umask = 022 #是否启动userlist为通过模式，YES的话只有存在于userlist文件中的用户才能登录ftp（可以理解为userlist是一个白名单），NO的话，白名单失效

I'm currently attempting to develop a sandbox using Docker. Docker spawns process through a running daemon, and I am having a great deal of trouble enabling the limits set forth in the limits.conf file such that they apply to the daemon. Specifically, I am running a forkbomb such that the daemon is the process that spawns all the new processes. The nproc limitation I placed on the user making this call doesn't seemed to get applied and I for the life of me can not figure out how to make it work. I'm quiet positive it will be as simple as adding the correct file to /etc/pam.d/, but I'm not

使用最小化的设定安装完CentOS7后，进入安装Oracle步骤前，需要安装几个工具。具体步骤： yum -y install vim --vim编辑器 yum -y install unzip --zip文件的解压工具 yum -y install lrzsz --上传下载工具 yum -y update --升级所有包,系统版本和内核，改变软件设置和系统设置 注：使用yum安装前，先保证系统可访问互联网。如果在系统无法访问的情况下，可以配置yum资源中心为镜像文件或者下载rpm包进行安装。 完成工具的安装之后，准备进入Oracle的安装过程。 第一步： 安装必须的依赖包 yum -y install gcc yum -y install gcc-c++ yum -y install make yum -y install binutils yum -y install compat-libstdc++-33 yum -y install elfutils-libelf yum -y install elfutils-libelf-devel yum -y install elfutils-libelf-devel-static yum -y install glibc yum -y install glibc-common yum -y install glibc-devel

I am using this module to authenticate using pam: http://code.google.com/p/web2py/source/browse/gluon/contrib/pam.py I can call authenticate('username','password') and it returns True/ False. It works for any 'username' but 'root'. My guess is that there is a security restriction in PAM that does not allow to check for the root password. I need to be able to check the root password. Is there anything I can change in the pam.conf or somewhere else to remove this restriction? I found the answer to your question, the problem is in the default service. when you call the function authenticate(