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You are here: Home » Protecting Server Directory With RSA and DSA Key

By Abhishek Ghosh May 28, 2014 8:25 pm Updated on May 28, 2014

Protecting Server Directory With RSA and DSA Key

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It is Possible to Create Mechanism to Protect Server Directory With RSA and DSA Key. If RSA Key does not match, the user will not be allowed to access the area. RSA and DSA Keys are Digital Signature. It appears a bit difficult to think about Protecting Server Directory With RSA and DSA Key, but if one thinks carefully, it is a kind of modification of SSH to Server Without Entering Password From Mac (OS X). Actually we can run almost all UNIX Shell commands over HTTP protocol and usually port 80. Port 80 is not powerless! That is basically why SQL Injection is able to run – when combined, they works as I/O. Possibly you have started to think too deeply, not much thought is needed.

 

Understanding the Basics of Protecting Server Directory With RSA and DSA Key

 

The topic falls under Identity And Access Management in Cloud Computing. There are many complex, paid solutions are available, like from Oracle :

 

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http://docs.oracle.com/cd/B28196_01/idmanage.1014/b25347/rsa.htm

 

Crude example can be access management by some web hosting control panel. In the same way like Oracle, Symantec has a different solution :

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http://www.symantec.com/business/support/index?page=content&id=HOWTO81144#v7641503

 

So, basically the title Protecting Server Directory With RSA and DSA Key appears quite closer to sci-fi story, but we use in many situations where extra security layer is needed. Cassava allows WordPress to act as a single sign-on authenticator using versions 1.0 and 2.0 of the Central Authentication Service (CAS) protocol. There are plugins too :

 

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http://wordpress.org/plugins/wp-cas-server/

 

The last one is not exactly what we are talking about – but one thing becomes quite clear, even WordPress like general purpose CMS or blogging software are now equipped with almost industry’s standard identity management, another for security enforcement :

 

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http://wordpress.org/plugins/wpclef/

 

Clef uses 2048-bit RSA keys. So with dirty PHP, actually it is possible to make the directory somewhat secure. It would take 6.4 quadrillion years to crack a 2048-bit (the length of Public and Private, industry standard) using a brute force method. May be you’ll be interested to read about phpseclib :

 

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http://phpseclib.sourceforge.net/ssh/compare.html

 

 

Protecting Server Directory With RSA and DSA Key

 

As the things are difficult to manage with lot of users, the Universities uses ssh-agent globally for X session. X server launch an ssh-agent for the entire X session by default for the login, this avoids the chance of DNS Poisoning.

Protecting Server Directory With RSA and DSA Key

If you read these two old guides for the end users :

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http://upc.lbl.gov/docs/user/sshagent.shtml
http://old-en.opensuse.org/Using_ssh-agent_globally_for_X_session

In fact, you can enable WordPress SSH access to install, update WordPress and WordPress plugins :

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# we assumed that you are root user on deb based linux
apt-get install libssh2-php
# for normal LAMP server installation; php.ini file is located at :
# /etc/php5/apache2
# can be seen by running this command
# php --ini
# Edit
nano /etc/php5/apache2/php.ini
# activate or add this line
extension=ssh2.so
# restart apache2
sudo /etc/init.d/apache2 restart

Not only hostname, username, password etc. things; with this settings, WordPress will also ask for Public Key and Private Key. This is an example of forcing a plain PHP MySQL web software to use the key pairs.

Tagged With how to protect rsa keys?

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Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

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About This Article

Cite this article as: Abhishek Ghosh, "Protecting Server Directory With RSA and DSA Key," in The Customize Windows, May 28, 2014, April 2, 2023, https://thecustomizewindows.com/2014/05/protecting-server-directory-rsa-dsa-key/.

Source:The Customize Windows, JiMA.in

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