How to Enable and Disable Root Login in Ubuntu 12.04 TLS

We have recently installed Ubuntu 12.10 Desktop and Ubuntu 12.10 Server, we have nowhere asked to supply root password during installation. Generally in Linux, root user does exist and we need to supply root password during installation. By default root account is disabled in Ubuntu Linux because of security reason and you cannot login as root user directly or su - (Switch User) to become a root. You need to add sudo (superuser do) before actual command if you want to run all administrative commands and you need to supply your password when prompts for password.

Sudo is allowed user to become superuser for temporary to run superuser administrative tasks.

During installation only allow to create new user which has no root ( aka super user) privileges. But same user is allowed to execute sudo commands. Configuring sudo access for users, need to configure /etc/sudoers.

We’ll be covering the usage of SUDO and also we are going to show you tips & tricks to become root user.

ADOBE ACROBAT X PRO 10.1.3 MULTILANGUAGE + KEYGEN

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Passive-interface command behavior in RIP, EIGRP & OSPF

Passive-interface command is used in all routing protocols to disable sending updates out from a specific interface. However the command behavior varies from o­ne protocol to another.

In RIP this command will disable sending multicast updates via a specific interface but will allow listening to incoming updates from other RIP speaking neighbors.

This simply means that the router will still be able to receive updates o­n that passive interface and use them in the routing table.

In EIGRP the passive-interface command stops sending outgoing hello packets, hence the router can not form any neighbor relationship via the passive interface. This behavior stops both outgoing and incoming routing updates.

In OSPF the passive-interface has a similar behavior to EIGRP. The command suppresses hello packets and hence neighbor relationships.

Explain Intrusion detection system (IDS)?? Types OF IDS...

An intrusion detection system (IDS) is a device or software application that monitors network or system activities for malicious activities or policy violations and produces reports to a Management Station. Some systems may attempt to stop an intrusion attempt but this is neither required nor expected of a monitoring system. Intrusion detection and prevention systems (IDPS) are primarily focused on identifying possible incidents, logging information about them, and reporting attempts. In addition, organizations use IDPSes for other purposes, such as identifying problems with security policies, documenting existing threats and deterring individuals from violating security policies. IDPSes have become a necessary addition to the security infrastructure of nearly every organization.

IDPSes typically record information related to observed events, notify security administrators of important observed events, and produce reports. Many IDPSes can also respond to a detected threat by attempting to prevent it from succeeding. They use several response techniques, which involve the IDPS stopping the attack itself, changing the security environment (e.g. reconfiguring a firewall), or changing the attack's content.

EBOOK - Installation And Configuration of R.S.A enVision

                                

"The Right Choice for Compliance and Security Success!". The RSA enVision platform provides collection, alerting and analysis of log data that enables organizations to simplify compliance and quickly respond to high-risk security events. The RSA enVision 3-in-1 platform offers an effective Security and Information Event Management (SIEM) and log management solution, capable of collecting and analyzing large amounts of data in real-time, from any event source and in computing environments of any size. RSA enVision is easily scalable - eliminating the need for filtering and to deploy agents.

Information System Auditing

1. What is informaton system?

Information system is any combination of information technology and human operation managemen and dececion making.

2. What is information system auditing?

Ron Weber opinion (1999,p.10), “EDP auditing is the process of collecting and evaluating evidence to determine whether a computer systems safeguard assets, and consumes resources effiently ”.Understanding in general is the process of collecting and evaluating evidence to determine whether a computerized application system has been set and implement the system, adequate internal controls, all assets are protected well / not abused, and ensuring data integrity, reliability and the effectiveness and efficiency of the system computer-based information.