Red Hat Enterprise Linux Benchmark V1.0.5
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RACF Tips Volume 3, Issue 1, January 2009
Volume 3 Issue 1 IPS RSH RACF T January For Administrators, Auditors, and Analysts 2009 Specifying a Replacement ID used to change a file's attributes for Program Control, APF Authorized, and Shared Library. with IRRRID00 . To generate commands to delete an ID and all references to it, use RACF's IRRRID00 utility. You simply enter the ID in the SYSIN DD Temporary Access with statement of the IRRRID00 job like so: CONNECT REVOKE(date) //SYSIN DD * USERX You may occasionally need to permit a user temporary access to a resource. One way to do If USERX is the owner of a profile or connect, so is to grant a group access to the resource IRRRID00 generates commands like: and connect the user to that group with a revoke date. The command to set the connect revoke CONNECT RDSADM GROUP(RACFSTC) OWNER(?USERX) date would look something like this: In these cases, you need to change ?USERX to CONNECT USERA GROUP(TEMPACC) REVOKE(1/20/09) a valid replacement ID. This can be done manually or with ISPF EDIT CHANGE. On the date specified with the revoke, RACF will no longer allow the user to have the access Alternatively, you can tell IRRRID00 which permitted to the group. If you want to remove the replacement ID to use when it builds the revoke date but leave the connect intact, enter: commands. If, for instance, you want to replace every occurrence of USERX with USERJ, enter CONNECT USERA GROUP(TEMPACC) NOREVOKE the following in the SYSIN DD: A banking client of ours used this capability to //SYSIN DD * govern access to APF-authorized libraries. -
LS-09EN. OS Permissions. SUID/SGID/Sticky. Extended Attributes
Operating Systems LS-09. OS Permissions. SUID/SGID/Sticky. Extended Attributes. Operating System Concepts 1.1 ys©2019 Linux/UNIX Security Basics Agenda ! UID ! GID ! Superuser ! File Permissions ! Umask ! RUID/EUID, RGID/EGID ! SUID, SGID, Sticky bits ! File Extended Attributes ! Mount/umount ! Windows Permissions ! File Systems Restriction Operating System Concepts 1.2 ys©2019 Domain Implementation in Linux/UNIX ! Two types domain (subjects) groups ! User Domains = User ID (UID>0) or User Group ID (GID>0) ! Superuser Domains = Root ID (UID=0) or Root Group ID (root can do everything, GID=0) ! Domain switch accomplished via file system. ! Each file has associated with it a domain bit (SetUID bit = SUID bit). ! When file is executed and SUID=on, then Effective UID is set to Owner of the file being executed. When execution completes Efective UID is reset to Real UID. ! Each subject (process) and object (file, socket,etc) has a 16-bit UID. ! Each object also has a 16-bit GID and each subject has one or more GIDs. ! Objects have access control lists that specify read, write, and execute permissions for user, group, and world. Operating System Concepts 1.3 ys©2019 Subjects and Objects Subjects = processes Objects = files (regular, directory, (Effective UID, EGID) devices /dev, ram /proc) RUID (EUID) Owner permissions (UID) RGID-main (EGID) Group Owner permissions (GID) +RGID-list Others RUID, RGID Others ID permissions Operating System Concepts 1.4 ys©2019 The Superuser (root) • Almost every Unix system comes with a special user in the /etc/passwd file with a UID=0. This user is known as the superuser and is normally given the username root. -
Adu FTP Server Adu FTP Server Supriyanto [email protected] IINDENDEKKSS
ADU SOFTWARE Berita | Ulasan | Adu Software | Utama | Bisnis | Apa Sih Sebenarnya... | Tutorial Adu FTP Server Adu FTP Server Supriyanto [email protected] IINDENDEKKSS ADU FTP SERVER oftpd 0.3.7 27 ProFTPD 1.2.10 27 PureFTPd 1.0.19 28 vsftpd 2.0.3 28 Wu-FTPD 2.6.2 29 WzdFTPD 0.5.2 29 auh sebelum protokol HTTP dibuat, pa- Wu-FTPD, WzdFTPD dan otftpd. Kriteria pengujian: ra pengguna Internet zaman dahulu su- Untuk pengujian keenam FTP server ini, Kali ini kami menguji enam buah aplikasi dah menggunakan protokol FTP sebagai yang menjadi penilaian terbesar bagi kami FTP Server yang ada di Linux. Sama seperti J sarana bertukar file. File Transfer Protocol adalah di masalah security. Program FTP pengujian yang telah dilakukan, kami tetap (FTP) merupakan aplikasi standar Internet server yang baik, harus memiliki catatan se- menggunakan empat kriteria sebagai bah- yang pertama kali di buat pada tahun 1971 curity hole yang sedikit. Banyak kasus yang an penilaian. Kriteria pertama adalah fung- sebagai bagian dari U.S Department of terjadi pada FTP Server yang berkaitan de- sionalitas. Sebuah program FTP Server yang Defense’s ARPANET (DARPANET) proto- ngan root exploit, yang didapat dari secu- baik harus memiliki fitur keamanan yang cols, yang kemudian juga melahirkan TCP rity hole aplikasi FTP Server. Untuk krite- baik dan memiliki kecepatan dalam mena- dan Internet Protocol (TCP/IP). ria lainnya adalah fitur pendukung aplikasi ngani request dari banyak user dalam satu Fungsi utama dari FTP sendiri adalah tersebut. Seperti adanya Authentification waktu. Untuk kriteria ini kami memberikan untuk berbagi file antar file system yang ber- Based SQL, LDAP atau PAM, virtual host porsi 40%. -
General Infrastructure Vsftpd FTPS Setup Red Hat Enterprise Linux 5
HAC Maarssen General Infrastructure vsftpd FTPS setup Red Hat Enterprise Linux 5 / CentOS 5 Author: René Hartman Version: 1.2.2 HAC Maarssen DOCUMENT HISTORY Document Location Ensure that this document is the current version. Printed documents and locally stored copies may become obsolete due to changes in the master document. Revision History Document name: FTPS_Setup_RHEL5.doc Version: 1.2.2 Date of 1 st version: 14-May-2010 Date of this version: 14-May-2010 Note: in the following table the revision number does not necessarily match with the version number of the document. The version number of the document is merely meant to control the number of saved changes. Version Date Author Status* Brief Description, Remarks Cpt FA Ap 1.0 14-May-2010 René Hartman X Initial Draft * Cpt = Concept; FA = For Approval; Ap = Approved HAC Maarssen Reviewers The following people have reviewed this document Version Name Role Required date of feedback Classifications Status: For approval HAC Maarssen TABLE OF CONTENTS Document History.......................................................................................................................... 1 Table Of Contents ......................................................................................................................... 3 1 Introduction ........................................................................................................................... 4 1.1 Overview ......................................................................................................................... -
CST8207 – Linux O/S I
Mounting a Filesystem Directory Structure Fstab Mount command CST8207 - Algonquin College 2 Chapter 12: page 467 - 496 CST8207 - Algonquin College 3 The mount utility connects filesystems to the Linux directory hierarchy. The mount point is a directory in the local filesystem where you can access mounted filesystem. This directory must exist before you can mount a filesystem. All filesystems visible on the system exist as a mounted filesystem someplace below the root (/) directory CST8207 - Algonquin College 4 can be mounted manually ◦ can be listed in /etc/fstab, but not necessary ◦ all mounting information supplied manually at command line by user or administrator can be mounted automatically on startup ◦ must be listed /etc/fstab, with all appropriate information and options required Every filesystem, drive, storage device is listed as a mounted filesystem associated to a directory someplace under the root (/) directory CST8207 - Algonquin College 5 CST8207 - Algonquin College 6 Benefits Scalable ◦ As new drives are added and new partitions are created, further filesystems can be mounted at various mount points as required. ◦ This means a Linux system does not need to worry about running out of disk space. Transparent ◦ No application would stop working if transferred to a different partition, because access to data is done via the mount point. ◦ Also transparent to user CST8207 - Algonquin College 7 All known filesystems volumes are typically listed in the /etc/fstab (static information about filesystem) file to help automate the mounting process If it is not listed in the /etc/fstab file, then all appropriate information about the filesystem needs to be listed manually at the command line. -
Migrating-From-Rhn-Classic.Pdf
Red Hat Subscription Management All Subscription Docs Migrating from RHN Classic to migrate from older Red Hat Network Classic (hosted) to updated subscription management Edition 4 Last Updated: 2018-05-01 Red Hat Subscription Management All Subscription Docs Migrating from RHN Classic to migrate from older Red Hat Network Classic (hosted) to updated subscription management Edition 4 Red Hat Subscription Management Documentation Team [email protected] Legal Notice Copyright © 2016 Red Hat, Inc. This document is licensed by Red Hat under the Creative Commons Attribution-ShareAlike 3.0 Unported License. If you distribute this document, or a modified version of it, you must provide attribution to Red Hat, Inc. and provide a link to the original. If the document is modified, all Red Hat trademarks must be removed. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, OpenShift, Fedora, the Infinity logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux ® is the registered trademark of Linus Torvalds in the United States and other countries. Java ® is a registered trademark of Oracle and/or its affiliates. XFS ® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. MySQL ® is a registered trademark of MySQL AB in the United States, the European Union and other countries. Node.js ® is an official trademark of Joyent. -
Version 7.8-Systemd
Linux From Scratch Version 7.8-systemd Created by Gerard Beekmans Edited by Douglas R. Reno Linux From Scratch: Version 7.8-systemd by Created by Gerard Beekmans and Edited by Douglas R. Reno Copyright © 1999-2015 Gerard Beekmans Copyright © 1999-2015, Gerard Beekmans All rights reserved. This book is licensed under a Creative Commons License. Computer instructions may be extracted from the book under the MIT License. Linux® is a registered trademark of Linus Torvalds. Linux From Scratch - Version 7.8-systemd Table of Contents Preface .......................................................................................................................................................................... vii i. Foreword ............................................................................................................................................................. vii ii. Audience ............................................................................................................................................................ vii iii. LFS Target Architectures ................................................................................................................................ viii iv. LFS and Standards ............................................................................................................................................ ix v. Rationale for Packages in the Book .................................................................................................................... x vi. Prerequisites -
Red Hat Enterprise Linux Certification Matrix for Dell EMC Poweredge Servers
Red Hat Enterprise Linux Certification Matrix for Dell EMC PowerEdge Servers September 10, 2021 Dell EMC Linux Team Introduction • This set of matrices attempt to represent the certification status between different versions of Red Hat Enterprise Linux and Dell EMC PowerEdge servers • Dell Technologies policy is to offer ‘validation’ support for a new release of RHEL at the moment it is GA from Red Hat – Customers with an existing Dell ProSupport contract who purchased their RHN subscription with their Dell EMC server may download and install the new release onto their server and will continue to be covered by their ProSupport contract. – Please note that only the contents of the distribution ISO are supported. No other software. • Please note the Red Hat CPU support policy here : – https://access.redhat.com/support/policy/intel 2 RHEL/Dell EMC Matrix published on September 10, 2021 Support levels for a platform/release combination • There are three levels of status : – Not Supported : The absence of an icon indicates that this release is not supported or certified for the referenced platform. – Certified: The release has been successfully certified, or the cert has been carried forward from a previous cert, and will appear on the Red Hat hardware certification page, no additional validation has been carried out. Certified is indicated by: – Validated : The release has been successfully certified and tested by Dell Technologies teams and will appear on the Red Hat hardware certification page. The contents of the distribution ISO are supported by Dell Technologies for their RHEL OEM customers and the ISO contains functioning drivers for the hardware platform. -
File System, Files, and *Tab /Etc/Fstab
File system, files, and *tab File system files directories volumes, file systems mounting points local versus networked file systems 1 /etc/fstab Specifies what is to be mounted where and how fs_spec: describes block special device for remote filesystem to be mounted fs_file: describes the mount point fs_vfstype: describes the type of file system fs_mntops: describes the mount options associated with the filesystem 2 /etc/fstab cont. fs_freq: used by the dump command fs_passno: used by fsck to determine the order in which checks are done at boot time. Root file systems should be specified as 1, others should be 2. Value 0 means that file system does not need to be checked 3 /etc/fstab 4 from blocks to mounting points metadata inodes directories superblocks 5 mounting file systems mounting e.g., mount -a unmounting manually or during shutdown umount 6 /etc/mtab see what is mounted 7 Network File System Access file system (FS) over a network looks like a local file system to user e.g. mount user FS rather than duplicating it (which would be a disaster) Developed by Sun Microsystems (mid 80s) history for NFS: NFS, NFSv2, NFSv3, NFSv4 RFC 3530 (from 2003) take a look to see what these RFCs are like!) 8 Network File System How does this actually work? server needs to export the system client needs to mount the system server: /etc/exports file client: /etc/fstab file 9 Network File System Security concerns UID GID What problems could arise? 10 Network File System example from our raid system (what is a RAID again?) Example of exports file from -
Tree-Like Distributed Computation Environment with Shapp Library
information Article Tree-Like Distributed Computation Environment with Shapp Library Tomasz Gałecki and Wiktor Bohdan Daszczuk * Institute of Computer Science, Warsaw University of Technology, 00-665 Warsaw, Poland; [email protected] * Correspondence: [email protected]; Tel.: +48-22-234-78-12 Received: 30 January 2020; Accepted: 1 March 2020; Published: 3 March 2020 Abstract: Despite the rapidly growing computing power of computers, it is often insufficient to perform mass calculations in a short time, for example, simulation of systems for various sets of parameters, the searching of huge state spaces, optimization using ant or genetic algorithms, machine learning, etc. One can solve the problem of a lack of computing power through workload management systems used in local networks in order to use the free computing power of servers and workstations. This article proposes raising such a system to a higher level of abstraction: The use in the .NET environment of a new Shapp library that allows remote task execution using fork-like operations from Portable Operating System Interface for UNIX (POSIX) systems. The library distributes the task code, sending static data on which task force is working, and individualizing tasks. In addition, a convenient way of communicating distributed tasks running hierarchically in the Shapp library was proposed to better manage the execution of these tasks. Many different task group architectures are possible; we focus on tree-like calculations that are suitable for many problems where the range of possible parallelism increases as the calculations progress. Keywords: workload management; remote fork; distributed computations; task group communication 1. -
Red Hat Enterprise Linux 8 Security Hardening
Red Hat Enterprise Linux 8 Security hardening Securing Red Hat Enterprise Linux 8 Last Updated: 2021-09-06 Red Hat Enterprise Linux 8 Security hardening Securing Red Hat Enterprise Linux 8 Legal Notice Copyright © 2021 Red Hat, Inc. The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA"). An explanation of CC-BY-SA is available at http://creativecommons.org/licenses/by-sa/3.0/ . In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, the Red Hat logo, JBoss, OpenShift, Fedora, the Infinity logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux ® is the registered trademark of Linus Torvalds in the United States and other countries. Java ® is a registered trademark of Oracle and/or its affiliates. XFS ® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. MySQL ® is a registered trademark of MySQL AB in the United States, the European Union and other countries. Node.js ® is an official trademark of Joyent. Red Hat is not formally related to or endorsed by the official Joyent Node.js open source or commercial project. -
Computer Security Administration
Information Security Group Information + Technology Services University of Toronto Endpoint Security Policy System A Network Access Control System with Vulnerability Detection and User Remediation Evgueni Martynov UNIX Systems Group Mike Wiseman Computer Security Administration Endpoint Security Policy System Table of Contents Acknowledgements............................................................................. 3 Change History .................................................................................... 4 Summary ............................................................................................. 5 Overview .............................................................................................. 5 Network Isolation ............................................................................... 6 Vulnerability Detection ....................................................................... 6 User Remediation ................................................................................ 8 Administering ESP ............................................................................... 8 ESP Operations Experience ................................................................ 9 Appendix I – Installation and Configuration of ESP server ........... 10 Using init.sh ..................................................................................... 10 Post-Installation ................................................................................ 11 Configuring an ESP Server to Work with an ESP Agent .......................