Virtual Servers Table of Contents I. Table of Contents II. Introduction III. Executive Summary IV. Virtual Servers a. What Are They? b. What Do They Replace? c. Requirements V. Advantages d. Maintenance e. Green Solution f. Disaster Recovery VI. Conclusion VII. References Introduction As the technology timeline continues in full momentum‚ companies tend to struggle behind‚ trying to catch up. Where we talk about in this
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Server Program A server position in the restaurant industry is responsible for a major portion of the customer service‚ communication‚ and hospitality within a business. The tasks that a job incumbent would perform in this position would help communicate one of these four messages to every guest; “I’m glad you are here‚” “We have what you want when you want it‚” “You get what you want when you want it‚” and lastly “We want you back again.” These messages must be delivered to every guest with
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Bash command line for Linux a alias Create an alias • apropos Search Help manual pages (man -k) apt-get Search for and install software packages (Debian/Ubuntu) aptitude Search for and install software packages (Debian/Ubuntu) aspell Spell Checker awk Find and Replace text‚ database sort/validate/index b
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Case Study: How Secure is the Cloud? CSQ1: Although cloud computing have the potential to deliver powerful benefits‚ they pose new challenges to system security and reliability. Cloud computing is indeed cloudy‚ and due to lack of transparency it creates so many problems. One of the major security issue is cloud computing is highly distributed. Cloud applications and application mash-ups reside in virtual libraries in large remote data centers and server mainly supplies business services and data
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Access control Access control Authentication Databases Authentication Databases Firewall support Firewall support /etc/sudoers /etc/passwd /etc/login.defs PAM Edit /etc/sudoers Edit /etc/sudoers file FHS FHS recommended to locate configuration files in the /etc/ path FHS /etc/fstab Samba Encrypted Partitions and Volumes Encrypted Partitions and Volumes filesystem quota chroot Jail Use chroot jail: • To enable an application access its own
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2010: Copyright 2009 Cox‚ Kaashoek‚ Morris Chapter 7 File system data structures The disk driver and buffer cache (Chapter 6) provide safe‚ synchronized access to disk blocks. Individual blocks are still a very low-level interface‚ too raw for most programs. Xv6‚ following Unix‚ provides a hierarchical file system that allows programs to treat storage as a tree of named files‚ each containing a variable length sequence of bytes. The file system is implemented in four layers: ------------pathnames
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Linux Security Technologies John Pierce SELinux (Security Enhanced Linux) is a mandatory access control in the Linux kernel that was originally developed by NSA (National Security Agency) with direct contributions provided by Red Hat Enterprise Linux (RHEL) via the Fedora Project. In the day and age of identity theft and attempted sabotage from terrorists against our country‚ it should be very apparent why an organization like NSA had such an interest in heading up development of a more
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Client server Current system: In that Corporate Financial System is a 25-year-old IBM 3090 mainframe running under a Virtual Machine/Conversational Mode System (VM/CMS) operating system. Many of the business applications used by the system are written in COBOL‚ and data that is stored in a non-SQL-compliant FOCUS database. Personal computers (PCs) containing an office productivity software is centrally located throughout the Corporate headquarters. Many day-to-day operations that happen across
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414 Mandatory Access Control 8. Know all of the possible states of SELinux . Pg 414 Enforcing Permissive and Disable 9. The files hosts.allow and hosts.deny belong to what security system? Pg 447 TCP Wrappers 10. Given the following entries‚ what will happen when a client at address 172.16.24.100 tries to access a Web site running on this server? Pg 447-448 hosts.allow httpd : 172.15.* vsftpd: 192.168.0.* sshd: 172.16.24.100 hosts.deny httpd : 172.* vsftpd :
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economically viable alternative to other storage networking solutions. Justify this statement. Ans- DAS provides an economically viable alternative to other storage networking solutions as- • DAS configuration is simple and can be deployed easily and rapidly. • Setup is managed using host-based tools‚ such as the host OS‚ which makes storage management tasks easy for small and medium enterprises. • DAS is the simplest solution when compared to other storage networking models • Requires fewer
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