SUSE & openSUSE

Tips,Tricks, Tutorials,How Tos and Troubleshooting suse linux

DenyHosts to secure from SSH Brut force attacks

Posted by admin on 24th March 2010

DenyHosts is a free opensource utility to secure your SuSE server or your openSUSE system from Brut-force attacks on the SSH server running on your system. DenyHosts works by updating the /etc/hosts.deny file on your SuSE or openSUSE system with the IP address of a host after a set number of failed login attempt from it.

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Posted in Security | 1 Comment »

How to control CRONTAB/AT permissions in SuSE/openSUSE

Posted by admin on 23rd March 2010

As you may be aware, ‘AT’ allows you to run a command or script at a particular time (say at midnight) and ‘CRONTAB’ allows you to run commands and scripts at scheduled times and at regular intervals. If you have SuSE or an openSUSE system in a multi-user environment then it is important to control access to the crontab and at utility to ensure system availability and security. This is one of the many steps in the system hardening procedures.

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Posted in Security | 1 Comment »

Install & Configure IPplan IP Manager in openSUSE

Posted by admin on 3rd June 2009

IPplan is a free opensource IP Address management application. IPPlan is a web based IP address management software and tracking tool simplifying the administration of your IP address space. IPplan goes beyond IP address management including DNS administration, configuration file management, circuit management and storing of hardware information. IPplan can handle a single network or cater for multiple networks and customers with overlapping address space. Makes managing ip addresses and managing ip address space simple and easy.
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Posted in Networking | No Comments »

Highlight Domain & Subdomain for SSL websites in Firefox

Posted by admin on 26th May 2009

When you visit a Secure website in Firefox chances are that the FavIcon for the website is replaced with a Green bar with the details of the company. This is because of the default properties in Firefox to display detailed information of the website from the Extended Validation Certificate on the website. However, if the website doesn’t host a Extended Validation certificate then the website URL (link) in the address bar is not highlighted or in otherwords shows as a normal website URL.

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Posted in Internet & Browser | No Comments »

Disable extension install delay counter in Firefox

Posted by admin on 22nd May 2009

When you click on a XPI file (install button in Firefox addon page for an extension) to install to install a Firefox extension, you would see a counter counting down from 3 to 0 before letting you to install. This is one of the most annoying settings in Firefox that I have ever come across.

This was delibrately done to avoid known security issues explained in detail here.

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Posted in Internet & Browser | 1 Comment »