Wading in IPTABLES, Traffic Shaping & Routing for Multiple Uplink Providers

December 3rd, 2007 DROP (Don't Route Or Peer) is an advisory "drop all traffic" list from Spamhaus, consisting of stolen 'zombie' netblocks and netblocks controlled entirely by professional spammers. DROP is a tiny sub-set of the SBL advisory designed for use by firewalls and routing equipment.

July 12th, 2006 Take a look at your log file (/var/log/secure for Fedora Core 4) and you will discover numerous automated ssh hacking attempts using dictionary attack. So now you have identified the offending addresses.

November 23rd, 2007 I learned it the hard way. Our gateway machine with firewall (shorewall) has multiple ADSL connections configured with load balancing for more bandwidth and transparent fail-over.

September 1st, 2007 eBox platform provides a mini-debian installation along with its modules to allow you to provide and manage network services on your corporate network. The key capabilities includes support for multiple external network interfaces with load balancing, traffic shaping, transparent proxy, firewall, content filters, DNS (domain name server), NTP (time server), mail server, Jabber Instant Messaging server, SAMBA for file sharing, DHCP and more.

July 29th, 2007 Broadband service in India is much less reliable than their counterparts in USA. While in USA, I used Pacific Bell 1.5 Mbps connection for 3 years without a single minute of downtime or any other problems.

February 13th, 2008 Please read the original article - How To: Load Balancing & Failover With Dual/ Multi WAN / ADSL / Cable Connections on Linux. It contains detailed information with a sample script.

June 8th, 2008 India has infrastructural issues which impedes the progress of IT industry today. One of the major one is the availability of reliable high-speed broadband service.

June 30th, 2006 I am working to transition my server to dedicated web hosting. My Westhost VPS account is crumbling under traffic and no amount of optimization is being able to handle anymore the heavy traffic I am getting.

October 23rd, 2007 Shorewall is an excellent free linux firewall which provides unparalleled level of fine grained control. It not only acts as a firewall and Gateway, it also supports DMZ, IP Masquerading (NAT & SNAT), Proxy ARP and more.

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 22nd, 2007 I am going to describe a simple no-brainer way to share your BSNL Dataone Broadband internet connection over wireless network. The same principles can be used with other broadband connections too.

October 20th, 2007 In many location, including but definitely not limited to India, single ADSL / Cable connections can be unreliable and also may not provide sufficient bandwidth for your purposes. One way to increase reliability and bandwidth of your internet connection is to distribute the load (load balancing) using multiple connections.

September 17th, 2008 Simple Thoughts Traffic I am sure you have heard about long tail theory on web traffic. Just how important is it? The pie-chart on your left shows the long tail traffic on Simple Thoughts blog.

July 9th, 2007 It appears Google is heavily compensating for my increased traffic with significantly lower eCPM these days. It is about 60% of what it was a month or two back.

May 23rd, 2005 Offering Web Services is a potential path for solution providers away from dependence on commodity hardware and software products. With a loose definition of web services, solution providers surveyed said they felt that Web services are a major priority to businesses of all sizes.