Archive for May, 2008
Accidentally deleted /etc/named.conf in Cpanel
i was into a mess by accidentally deleting /etc/named.conf in my dedicated server running centos 5. Sooner i did that all my sites went down. I was in a terrible situation.
For those of you who did that i am documenting here how to restore the file!
Go to Cpanel WHM > Configuration file rolleback […]
Basic Linux Server Security Tutorial
How to Secure Linux Servers
Basic Linux Server Security
Install Firewall (APF or CSF Firewall with BFD)
ModSecurity (Web application firewall)
ModEvasive (Prevent DDOS attacks)
Harden SSH server
Fix Open DNS Recursion
Install RKhunter
Install ClamAV (Antivirus)
XInet Servers Hardening (Disable Telnet/Finger or unwanted services)
Securing PHP
PortsEntry (tool to detect portscans)
Harden host.conf (against IP spoofing)
Check User Uploaded files
Secure /tmp Folders (noexec, nosuid)
This tutorial guide covers […]
Install Snort Intrusion Detection & Prevention System for Linux
Installing Snort
Snort is a widely deployed open source intrusion detection and prevention system. You can download and install the source packages from the snort website
wget http://path/to/snort-2.8.1.tar.gz
tar zxf snort-2.8.1.tar.gz
cd snort-2.8.1
./configure
make
make install
ERROR! Libpcap library/headers (libpcap.a (or .so)/pcap.h)
not found, go get it from http://www.tcpdump.org
or use the –with-libpcap-* options, if you have it installed
in unusual place. Also check […]
Domain with WWW not resolving problem!
i had a wierd problem with my bind dns server which will not resolve the domain name with www. it works perfectly well, when i type http://domain.com without www in the browser it gets resolves to my IP address.
My zone file looks like this
$ttl 38400
domain.com. IN […]
bind /etc/named.conf missing
i was trying to install bind dns server with my centos 5 and i couldnt locate the /etc/named.conf
i tried installing using
yum install bind-chroot bind*and looks like there is often a problem with bind installed through yum. when i tried to restart the named daemon i am getting failed.
Locating //etc/named.conf: [FAILED]
This is a bug on centos […]
Install LAMP Server for Centos/RHEL
Linux + Apache + MySQL + PHP/Perl together commonly known as LAMP Server.
* Apache Web Server 2.0
* MySQL Database Serve 5.0
* PHP Scripting Language 5.0
* phpMyAdmin - Web based MySQL Administration Tool
* Webmin - A free web based hosting control panel
Goal
To setup a LAMP server on a fresh VPS/Dedicated server running Centos 5.0 with atleast […]
Perl modules CPAN error memory allocation
i was trying to install some perl modules to ispconfig and i kept on getting the error with memory allocation problem
perl -MCPAN -e shell
install HTML::Parser
install DB_File
install Net::DNS (when prompted to enable tests, choose “no”)
install Digest::SHA1
Going to read /root/.cpan/sources/authors/01mailrc.txt.gz
Could not pipe[/bin/gzip –decompress –stdout /root/.cpan/sources/authors/01mailrc.txt.gz |]: Cannot allocate memory at /usr/lib/perl5/5.8.8/CPAN.pm line 5726, line 3.
To […]
Best Hosting Server Control Panels for Linux
Server control panels (web based control panel software) ones for linux can easily help you to easily deploy a server managing hundreds of users and offers management of server resources on the fly. Just get a VPS/Dedicated server install a server control panel and you are good to go with hosting!
Some of the best […]
Fix: Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’
if you are new to installing mysql server you might probably face this error quite often if you type mysql in the shell prompt.
> mysql
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’
To fix:
First start the mysql daemon, then type mysql […]
Install ModSecurity for Redhat/Centos
Howto: Install Mod_Security & Mod_Evasive
ModSecurity is a free open source web application firewall which can help you to guard against LFI (local file inclusion attacks) and SQL injection vulnerabilities. ModEvasive offers protection against DOS (denial of service attacks)
For Redhat/Centos with Cpanel
Just go to Cpanel WHM > Plugins > Enable Mod_Security > Save
That should install mod […]
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