Over the weekend I wanted to set up a cloud based project management software and after my default web hoster failed miserably, I took the opportunity to try a new hosting company I heard of some time ago called Uberspace. This post is probably only interesting for German speakers because they only have a German … Continue reading Uberspace, IPv6, Let’s Encrypt, Domain Names, etc. etc.
A date to remember for me: On 15th January 2016 I contacted my web server at home running Owncloud and Selfoss for the first time over IPv6. From an end user's point of view no difference is visible at all but from a technical point of view it's a great "first time" for me, made … Continue reading My First IPv6 “First Call” To My Own Services At Home
In the second half of last year, my mobile network operator of choice has introduced IPv4/v6 dual-stack functionality and since then I've been enjoying IPv6 on my mobile device while away from home. Not that I would notice as a normal user as all services I use can still be reached over IPv4, but as … Continue reading IPv6 At Home And Away Now
In the previous two parts on IPv6 leakage in IPv4-only VPN environments I’ve taken a look at how things can be fixed on the client side (part 1) and on the network side (part 2). While being at conferences and in hotels I often use a Raspberry Pi Wi-Fi VPN client gateway to connect all … Continue reading How To Pretect Against IPv6 Leakage in an IPv4 VPN Environment – Part 3 (Raspi VPN Gateway)
While being excited about the availability of IPv6 from my mobile network operator of choice the disadvantage that comes along with it is IPv6 leakage when using Witopia’s VPN service with OpenVPN on Ubuntu. For some strange reason they answer IPv6 DNS AAAA requests even though their product only tunnels IPv4 packets. My OpenVPN server … Continue reading How To Pretect Against IPv6 Leakage in an IPv4 VPN Environment – Part 2 (Server Side Changes)
Last year I had a post that one has to be careful about establishing an IPv4-only VPN tunnel over a network interface that has a public IPv4 and a public IPv6 addresses assigned to it. If the DNS server on the other side of the VPN tunnel returns IPv6 addresses and the network stack on … Continue reading How To Protect Against IPv6 Leakage in an IPv4 VPN Environment – Part 1
I like IPv6 and I think it’s going to be a big help to overcome the problem NAT (Network Address Translation) causes for self hosted services at home for the average user. But on the way to full IPv6 support there are a couple of pitfalls one needs to be aware of. When I am … Continue reading IPv6 Is Nice But It Circumvents My VPN Tunnel
Last week I got a software update for my VDSL Router at home which included IPv6 functionality. Very nice, so finally I could finally get some hands-on IPv6 experience. Here are some of my findings of this exercise: 6to4 Tunnel Setup on the VDSL Router As my network provider does not yet offer IPv6 natively, … Continue reading IPv6, 6to4, Ubuntu and Windows 7
Lately I had some issues with the Internet connectivity being a bit slow and while working the issue I discovered an unrelated but also interesting thing: When using Firefox and other applications on Ubuntu (10.04 in my case) the DNS resolver always queries for an IPv6 address for a domain name first (AAAA record). Only … Continue reading How To Disable IPv6 DNS Querries in Ubuntu
There are two reasons mobile network operators are giving out private IP addresses to mobile users and map the traffic over a Network Address Translation (NAT) gateway to and from the Internet. The first is that IPv4 addresses are a scarce resource and assigning a public IP address to every user would require a huge … Continue reading Is IPv6 The Solution For Mobile Battery Drain?