linux role based access control

Tag: Cal width indicates the listening port policy shel Good installation package tabLinux Network services -Remote access and control First,SSH Overview 1. introduction to SSHSSH(secure Shell) is a secure channel protocol, which is mainly used to realize remote login of character interface, and so on. the SSH Protocol encrypts the data transmission between the two parties, including the user password ente

Implementation of access control (ACL) permissions in Linux 1. Add an ACL access control permission to the partition and add users[Root @ localhost ~] # Mount-o remount, acl/dev/md0/mnt/sdb[Root @ localhost ~] # Useradd user1[Root @ localhost ~] # Useradd user2 2. permission

value (custom user, custom group, with maximum permissions for the group), rather than the traditional group permissions setfacl-m mask::r file sets the Mask permission Tfacl can see special permissions: Flags give directory default X permissions through ACLs, directory files will not inherit the X permission base ACL cannot remove setfacl-k dir remove default ACL permissions setfacl–b file1 Clear all ACL permissions get Facl File1 | Setfacl--set-file=-file2 copy file1 ACL permissions to File2

Samba-based file sharing in Windows Linux Operation in Windows 1. Set the shared directory, such as: D: // share2. Create a working group windowslinux on "Network neighbors". The created working group will automatically share the "share" directory;3. Create a new user "Linux" for Linux to operate shared files and se

254: Pass the public key to the SSH serverSsh-copy-id [email protected]//upload key pairSSH Server 50[[email protected] ~]# ls ~/.sshAuthorized_keysSSH Server 50 Disable password Authentication loginVim/etc/ssh/sshd_configBayi passwordauthentication No//disable password Authentication login: Wq#systemctl Restart sshdClient 254: Test key pair Authentication Login#ssh [email protected]//Do not enter a password to connect directly#ssh [email protected]//no connection allowed+++++++++++++++++++++++

LINUX 6--installation SSH remote access control------------------------------------Overview----------------------------------- SSH (secure Shell) is a secure channel protocol, which is mainly used for remote login, remote replication and other functions of character interface. The SSH protocol encrypts the data transmitted by both parties, including the

=" Wkiol1wdhkkjlmdbaae_t6io9mu531.jpg "/>Setting ACLs on files650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/6F/77/wKiom1WdGtPAZmtHAAErgMcsXSE554.jpg "style=" float: none; "title=" K.png "alt=" Wkiom1wdgtpazmthaaergmcsxse554.jpg "/>Test (because the file test belongs to user root and group Root,other only Read permission)Normal user test cannot modify the file test because only the R permission650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/6F/78/wKiom1WdG6Oj_UGOAADgcH0rSQ

1.JConsole doesn't have much to do with introductions. Configuration at the 2.Linux end 2.1. Enter the WebSphere console (https://localhost:9043/ibm/console/login.do?action=secure)2.2. Configuring JVM Parameters2.2.1, jvm:-djavax.management.builder.initial=-dcom.sun.management.jmxremote (Note: = There must be a space behind)2.2.2, servers-->server types-->websphere application Servers-->server Infrastructure-->java and Process Management--

-s_1654934498.png "title=" 4 "style=" Float:none; alt= "Wkiom1kwfcghrallaaapxpmsnwq840.png-wh_50"/>Seven. ACL access control ListCd/sharesGetfacl zu1 #获取现有的ACL650) this.width=650; "Src=" https://s3.51cto.com/wyfs02/M02/97/99/wKioL1kwFCHC8qCLAAAPF_yEzPA874.png-wh_500x0-wm_ 3-wmp_4-s_1025094167.png "title=" 5 "style=" Float:none; alt= "Wkiol1kwfchc8qclaaapf_yezpa874.png-wh_50"/>Setfacl-m G:boss:rx ZU1 #设置ACL,

In linux, root users are prohibited from using ssh to log on and access control over ssh. in Linux, by default, root users can log on through ssh. However, for security reasons, this permission is inappropriate because hackers may crack your root password by brute force and then enter your system. oh, damn it ..... for

1.What is Facl?Facl, the file system access control list, that is, the filesystem. Based on previous knowledge of the Linux permissions model, it is probably as follows:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/2F/4E/wKioL1OfCQXjMb5aAADyJpA5D_Q227.jpg "title=" Facl " alt= "Wkiol1ofcqxjmb5aaadyjpa5d_q22

#！ /bin/bashTC Qdisc del Dev $lan root >/dev/nullTC Qdisc Add dev $lan root handle 1:HTB default 10TC class Add dev $lan parent 1:classid 1:1 HTB rate 100MbitTC class Add Dev $lan parent 1:1 classid 1:10 HTB rate 10Mbit ceil 15Mbit burst 20kbitTC class Add Dev $lan parent 1:1 classid 1:2 HTB rate 1Mbit ceil 2Mbit burst 15kbitFor ((i=230;iDoTC Filter Add dev $lan protoco IP parent 1:prio 1 u32 match IP DST "192.168.20. $i" Flowid 1:2DoneA TC-based flow

Special Access control permissions in linux: sticky bit, setuid, setgid 1. sticky bit, also known as stricted deletion bit, is set on the directory to control the permission to delete and rename files in the directory. If a directory has sticky bit, only the following three types of users have the permission to delete

/wKioL1TUbkWRE-L_AACBYP2XnGg744.jpg "/> SFTP Secure FTP The SFTP command allows you to upload and download files using SSH secure connections with remote hosts, using FTP-like logon processes and interactive environments to facilitate directory resource management.Example: basic operation of SFTP login, browse, file upload650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/59/7F/wKiom1TUbVjyPIObAACcs_teQQc526.jpg "/>Graphical Tools PUTTYCN, WinSCPFirst, specify the IP of the

Access Control of Device Files: exclusive devices, restrict access by only one user (Single User Access) at a time, block user access, and copy the device when the device is turned on. Exclusive devices are mainly used to allow drivers to maintain a atomic_t variable. This v

When you need to set permissions on a file for a particular user, the traditional chmod operation may not meet our needs, and you can use FACL (file access control system) to set additional permissions on a user for a file. There are two commands associated with this, Serfacl,getfacl.1.setfacl set permissions.Usage:Setfacl-m u:username:perm File ... Set permissions for usersSetfacl-m g:groupname:perm File .

022umask: view umask#: settings umask002umask–S mode display umask–p output can be called Global Settings:/etc./bashrc user settings:: ~/.BASHRC650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/85/6A/wKiom1ei1MXxpxQlAAAbF_eVngA811.png "title=" 9.png " alt= "Wkiom1ei1mxxpxqlaaabf_evnga811.png"/>Set file Properties command:chattr[-rvf][-vversion][mode]files... chattr+A Add the Access file three times unchanged chattr+i Cannot delete, renam

/sshd_config # #配置访问权限文件 (see annex)[email protected]. ssh]# SCP Id_rsa [email protected]:/root/.ssh/# #分发密钥The authenticity of host ' 172.25.14.11 (172.25.14.11) ' can ' t be established.ECDSA key fingerprint is eb:24:0e:07:96:26:b1:04:c2:37:0c:78:2d:bc:b0:08.Is you sure want to continue connecting (yes/no)? Yeswarning:permanently added ' 172.25.14.11 ' (ECDSA) to the list of known hosts.[email protected] ' s password:Id_rsa 100% 1679 1.6kb/s 00:00[email protected]. ssh]# systemctl Restart sshd

A prohibit PHP parsingIn order to make certain websites more secure, prevent criminals to upload some kind of disguised malicious Trojan files, (such as PHP files), steal the server important resources, we have to protect against some directory, prohibit its parsing PHPCore configuration file Contents Modify the virtual host configuration file,-T, graceful after testingWe found that the 123.php placed in other locations, can be normal parsing, placed in the upload directory, directly returned to

:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/5B/8B/wKioL1ULz5rTROn4AAIMdN03FPQ589.jpg "title=" image 054. JPG "alt=" wkiol1ulz5rtron4aaimdn03fpq589.jpg "/>File access Control ListFile Access Contrl ListThe main purpose is to provide a specific permission setting other than the traditional owner,group,others Read,write,execute permissions, which can