How To Block IP Addresses On Linux Server

September 11th, 2007 Most guide to adding multiple IP addresses on Linux starts with the Microsoft-like solution of using ifconfig. While the solution is correct it doesn't survive a reboot or even a network restart.

May 29th, 2006 I briefly reviewed my corpus of 4569 comment spams in my Akismet queue. Of them over 53% of the spam has been contributed by Top 100 spamming IP addresses.

November 15th, 2006 I am going on a business trip to USA, tentatively on 24th of November. I will be around Carlsbad, California.

August 23rd, 2007 Round robin DNS is a simple way to load balance your servers. You can use it balance the load between multiple web / ftp or other servers.

September 9th, 2007 Run the command: ip address show In the output you will find lines like these: inet 127.0.0.1/8 scope host lo inet 192.168.1.10/24 brd 192.168.1.255 scope global eth1 The highlighted portions are your (ipv4) ip addresses. The /8 or /24 represents your network.

June 28th, 2008 For regular spammers and sploggers, banning their IP address is a simple and effective way to get rid of them. I will describe three methods here with the simplest at the very end.

July 7th, 2006 Finally my (unmanaged dedicated) server has been deployed (under 48 hours). Now my actual work begins.

April 22nd, 2006 I am unable to use ZoneAlarm Personal Firewall as it proved incompatible with Asrock Motherboard. So I switched to Agnitum Personal Firewall.

February 18th, 2007 The basic idea of RAID (Redundant Arrays of Inexpensive Disks) is to combine multiple small, independent disk drives into an array of disk drives which yields performance and recoverability exceeding that of a Single Large Expensive Drive (SLED). Redundancy is also provided (unless RAID 0) which allows easy and often automatic recovery from hard disk crash.

April 27th, 2009 Suppose you want to change and enable the remote access to MySQL DB on your linux server (Debian). By default, you don't get such privileges so you will have to work your way through this.

August 23rd, 2007 We are in the middle of changes. We will first switch IP addresses and then add a new server to take on the load, bring it on.

January 6th, 2007 Programatically using ICMP Ping is a great way to establish that a server is up and running. Previously you couldn't do ICMP ping (what ping command does in Linux/Unix & Windows) in java without using JNI or exec calls.

February 19th, 2009 Database Administrators and Web developers know how horrific are SQL injections and DoS attacks. Microsoft has come in to respite this time.

September 18th, 2009 Do you wanna know how long the server has been running? It requires just a simple command to monitor the time for which the Linux system has been running. With a single command you can not only know about the uptime, but also the number of users that have currently logged on and the system load averages for the past 1, 5 and 15 minutes.

May 12th, 2007 Mantis is popular php based defect tracking application which works on top of RDBMS like MySQL and PostgreSQL. Recently I ported our Windows based Mantis installation to Linux.