Viewing entries tagged with 'linux'
Using OpenDNS with your own DNS
Yesterday I read an article about OpenDNS http://www.opendns.com. OpenDNS adds the possibility of domain name based filtering. You can configure your own white and blacklist, but they also have a list of categories you can choose from. Most interesting category I found was phising, but I image that if you got small children at home you'd also want to block porn and such. Domain name spelling correction is an added bonus, plus they promise almost 100% service availability, superior performance, domain name spell checking and statistics gathering (can be turned off).
High Speed Firewalling in Linux
In this age of virtualization, cluster and grid applications, the load on the server network interface tends to increase. Multi-homed servers were rare not more than 5 years ago, nowadays servers come with 4 NICs pre-installed. This, of-course, increases complexity and network cost. Today I made a proposal for a couple of servers with more than 10 Gigabit interfaces. With the current state of technology, we are approaching the break even point for 10 Gigabit network interfaces. This year will see the breakthrough of 10Gigabit over copper in the datacentre.
