Archive for January 24th, 2010
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Proposed IT subnetting Infrastructure
Sunday, January 24th, 2010
Proposed IT subnetting Infrastructure For External communication we will use Cisco Router(Cisco ASA5520 firewall) For internal communication we will use managed switch Dell Power Connect 6248 Why use a Managed Switch? Limit broadcast traffic and increase security using VLANs Remove traffic bottlenecks using port trunking Guarantee bandwidth for time-sensitive voice and video traffic using Traffic [...]
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SSL Configuration in Apache
Sunday, January 24th, 2010
Secure Sockets Layer (SSL) enables the HTTP protocol to be secured. This page will show you how to configure SSL in Apache and SquirrelMail. Generate a Private Key Make sure you are logged in as the root user when doing steps below. 1. Generate a pass phrase protected private key using the command below. Provide [...]
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SQL Injection Attacks
Sunday, January 24th, 2010
In this article I’ll attempt to shed some light on this under-documented attack, explaining what an SQL injection attack is and how you can prevent one from occurring within your company. By the end of this article you’ll be able to identify situations where an SQL injection attack may allow unauthorized persons to penetrate your [...]
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PERL-DATETIME-FORMAT-ICAL RPM PACKAGES
Sunday, January 24th, 2010
http://dag.wieers.com/rpm/packages/perl-DateTime-Format-ICal/perl-DateTime-Format-ICal-0.08-1.el5.rf.noarch.rpm rpm -ivh perl-DateTime-Format-Epoch-0.10-1.n0i.2.noarch.rpm –nodeps yum install perl-DateTime*
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Setup NIS Server
Sunday, January 24th, 2010
NIS Server Build NIS Server in order to share users’ accounts among virtual networks. Following examples show that NIS Server is built on HostOS in virtual networks like NFS Server. It’s necessary to install ypserv for NIS. First we need to install the ypserv package, we can install it by using the following command #yum [...]
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Nagios Architecture
Sunday, January 24th, 2010
Overview Nagios is a host and service monitor designed to inform you of network problems before your clients, end-users or managers do. It has been designed to run under the Linux operating system, but works fine under most *NIX variants as well. The monitoring daemon runs intermittent checks on hosts and services you specify using [...]
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Jopr Monitoring Tool – Installation
Sunday, January 24th, 2010
1. Please installed the postgresql by using the following command, the general installation. As root install postgres core: yum install postgresql* 2. Now create postgres user: adduser postgres 3. Create the datafile for the database: mkdir -p /usr/local/pgsql/data 4. Change ownership of the data files to the postgres user: chown postgres /usr/local/pgsql/data 5. Now assume [...]
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Installing SSL Certificate – Apache 2.x
Sunday, January 24th, 2010
Once your SSL certificate has been signed and issued,Go Daddy® will send you an e-mail message that allows you to download the signed certificate and our intermediate certificate bundle, both of which must be installed on your Web site. Note: You must use the provided certificate-download link within three days of receiving the certificate-issuance e-mail [...]
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Installing Lighttpd With PHP5 And MySQL Support On CentOS 5.0
Sunday, January 24th, 2010
Installing Lighttpd With PHP5 And MySQL Support On CentOS 5.0 Lighttpd is a secure, fast, standards-compliant web server designed for speed-critical environments. This tutorial shows how you can install Lighttpd on a CentOS 5.0 server with PHP5 support (through FastCGI) and MySQL support. In this tutorial I use the hostname server1.example.com with the IP [...]
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IIS Security Checklist
Sunday, January 24th, 2010
IIS Security Checklist There are several ways to enhance the security of computer publishing information on an intranet or the Internet. If you have concerns about the security of your system, review this checklist to determine if aspects of your security could be improved. Windows Security The security features in IIS are built upon those [...]
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Ganglia Installation steps
Sunday, January 24th, 2010
1. Download and install latest repository from the following URL: rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm 2. Install the rrdtool by using the following command: yum install rrdtool* 3. rpm -ivh libconfuse-2.5-4.el5.i386.rpm 4. rpm -ivh libganglia-3_1_0-3.1.1-1.i386.rpm 5. rpm -ivh ganglia-gmond-3.1.1-1.i386.rpm At Server End: /etc/ganglia/gmetad.conf The keyword ‘data_source’ must immediately be followed by a unique # string which identifies [...]
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Mysql Server Backup and Failover
Sunday, January 24th, 2010
The solution will comprise of two database servers and an application server. At any instant of time one database server would act as active master allowing writes and both database servers will be able to serve reads. Application server will be writing and reading from preconfigured IPs for writes and reads. Mysql Server Backup and [...]
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Mysql Cluster Configuration
Sunday, January 24th, 2010
Download the cluster rpms from the mysql website given below. http://dev.mysql.com/downloads/cluster/6.2.html There you will get the rpms for cluster storage engine,server,client,cluster storage engine management. Download the rpms as per you setup configurations, i.e download storage engine rpms on storage server and management rpms on management server. Mysql Cluster SQL node: TheServer RPM (for example,MySQL-Cluster-gpl-server-6.2.15-0.rhel4.i386.rpm), which [...]
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Checklist Websecurity
Sunday, January 24th, 2010
1. Disable TRACE and TRACK in the main scope of httpd.conf 2. Disable directory listing or Path Traversal on Apache 3. Disable following options in the httpd.conf file UseCanonicalName Off ServerSignature Off HostnameLookups Off ServerTokens Prod 4. Disable the weaker SSLv2 protocol and to enable the stronger TLSv1 protocol 5. Disabling Undesirable Options in php.ini [...]
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Boost Network Performance / Throughput
Sunday, January 24th, 2010
Network Performance Document Linux Configure Jumbo Frames to Boost Network Performance / Throughput Most modern Linux distros (read as Linux Kernel 2.6.17+) does support frames larger than 1500 bytes. This can improve the performance. First, make sure your network driver supports custom MTU. Second you need to have a compatible gigabit NIC Jumbo frames can [...]
