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Key Based SSH Logins With PuTTY

In SSH, key based authentication are more secure while connecting to a server. On Windows Desktops we use application called Putty for accessing a linux server using SSH. We can enable key based authentication in Putty. 1. First we have to create a profile in putty for the target linux server. 2. We have to  Full Article…

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How to unzip files bigger than 4GB?

Have any one tried to unzip a file bigger than 4GB using unzip command? If you try to unzip a file larger than 4GB, It will show an error message like below; ============ error: Zip file too big (greater than 4294959102 bytes) ============ Unzipping a file in Linux is pretty straight-forward with the “unzip” command.  Full Article…

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Speed up SSH login

Ssh is the most commonly used client server application to remotely manage linux servers. Some times when we try ssh to a server, we may come across some delay to reach till the password prompt. We can speed up this process. Causes:- 1. GSSAPI to authentication is enabled in the server 2. UseDNS is to  Full Article…

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Setup SVN in cPanel

SVN or Apache Subversion is a software versioning and revision control system . Developers worldwide use SVN to maintain current and historical versions of files which change often such as  source code, web pages and documentation Follow the below mentioned steps to install SVN on your cPanel servers mkdir -p /usr/local/src/subverison cd /usr/local/src/subversion wget http://subversion.tigris.org/downloa…-1.5.0.tar.bz2 tar xfj  Full Article…

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Openssl commands

Following openssl commands help you to manage ssl when there is no control panel (such as cpanel) for the server. Such commands may be used in plain linux server. a) How to generate a new private key and Certificate Signing Request openssl req -out CSR.csr -new -newkey rsa:2048 -nodes -keyout privateKey.key b) Generate a self-signed  Full Article…

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Kill apache semaphores

If apache in the server doesn’t start, you can try for the below shown script, it doesnt do any magic, it simply kills the apache semaphores. I’d assume if you’re reading this article, Apache has stopped running. Run this command as root: # ipcs -s If you see a list of semaphores, Apache has not  Full Article…

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Installing mod_evasive

mod_evasive is an apache module to protect the server against HTTP DoS or DDoS attack or brute force attack. Its a widely used module by sysadmins around the glob to mitigate ddos. It is also designed to be a detection and network management tool, and can be easily configured to work along with ipchains, firewalls,  Full Article…

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CONNLIMIT in csf firewall

csf is the most popular firewall used in the linux servers. Tweakings of the csf are common tasks by sysadmins and one of the commonly encountered tasks are limiting the number of connections to the server. We can limit the number of connections from an IP address to a port at a particular time by  Full Article…

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Install APC php module on Linux server

The APC(Alternative PHP Cache) can be installed using PECL on linux cpanel server 1) Just execute following command from shell as root user pecl install apc and select the options as per the requirement. 2) Update global php.ini with the apc extension extension=”apc.so” 3) Restart apache service Steps to install APC on Linux server manually  Full Article…

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