Ubuntu (I) - Introduction
One
the issues of most concern to newcomers to Ubuntu is the security (especially if coming from Windows). However, most bring misconception and myths based on the movies than in reality hackers. For this reason I am going to devote a series of articles giving an overview at all levels Ubuntu security, clarifying doubts, demystifying hoaxes and giving extra information for those wishing to pursue the subject.
This article is a guide and an index of what I will publish in future articles.
Sunday, July 4, 2010
Belgian Draft Horse Mart
- safety myths
- Ubuntu (and GNU / Linux in general) are secure systems and should not worry about security: FALSE
The sole purpose of the root user to administer the system, in no case should exercise the user roles. Also use root when you should not normally cause permission problems in applications. 
need to activate the root account in Ubuntu to do the job "x": FALSE 
In Ubuntu root user should never enter the system. For that you use sudo. Windows viruses can affect me in Ubuntu: No virus
FALSE Windows (at least to date) affect GNU / Linux. Although it has been reported that certain cases of malware running through wine. + Info
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Always use secure passwords and not even if you disable a little annoying. - + info
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insurance -
Repositories Repositories are sources that distributions like Ubuntu get the software, using unsafe or unauthenticated repositories could result in the entry of malicious software on our system. - To avoid this always use official repositories or repositories signed key.
Firewall
Among the many functions of a firewall is to increase the security of our network connections using filters that analyze the origin, destination, port and other data related to these connections.
This layer of security is especially important for those services that you offer through the local network or internet (mail server, web hosting, remote desktop ...)
+ info
is an extra layer of security to confine processes applications and / or users, according to predetermined security policies, thus preventing that exceed their duties or malicious software is used to exploit its potential vulnerabilities.
+ info Antivirus
- Unlike Windows where a good antivirus (and certainly more than one) is absolutely necessary, in Ubuntu we hardly need this level of security.
Yet there are few cases where it may be useful, for example, scanning a Windows partition or USB devices, scanning Windows machines through the network, adding an antivirus filter our internal mail server or avoid infection of applications running with Wine.
+ info system analysis tools
- There are several utilities that help you analyze your system, check your weaknesses, major intrusions and vulnerabilities.
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port scanners, search engines rootkit or full security suites.
+ info
records all events that occur in the system are recorded somewhere, including in relation to external connections and security.
Learn to locate and analyze this information will give us valuable information on system status and any shortcoming in safety.
detect and expel intruders
- Although much more difficult than some people think, either by our carelessness or by a vulnerability in Ubuntu, could be the case that a user (or program) sneak past into our system without permission.
how to act in these cases depend on whether this situation will occur or not.
More https: / / help.ubuntu.com/8.04/serverguide/C/user-management.html
https: / / help.ubuntu.com / community / https
- Firewall : / / help.ubuntu.com / community / Repositories / Ubuntu
http://www.osnews.com/story/23463/Linux_Security_-_a_Few_Useful_Tactical_Tips
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