Now I have activated Twitter Tools. Now I should get my posts on Facebook and twitter. testing

I am trying out a possibility to automatically post my blog posts to Facebook. Let's see if Wordbooker does a good job.

The first time I tried it, I got two entries on my Wall, let's hope that now there is only one. Sorry for spamming!

We arrived in St. Pete. We had no trouble at the border and so we had some time to do some sightseeing. Unfortunately, the weather was a little cold and the sky a little gray - however, the buildings were still very impressive. See yourself:

Next leg of the trip:

We are traveling in a very luxurious Hansabus, each of us is working on their notebooks or phones, drinking tea and coffee and enjoying the trip.

Very good start, indeed. Let's hope we continue like this.

I am just sitting in the bus to Tallinn to head out to MoMo St. Petersburg tomorrow. I am excited to be invited to give a talk on our research at the Institute of Computer Science in Tartu on this event. I will use these posts to give some further information relating to my talk on Monday evening.

• Risks and rewards of moving applications to the cloud – a white paper

We have recently come across an interesting discussion group called “Cloudusecases.org”. It has published two white papers titled “Cloud Computing Use Cases White Paper” and “Moving to the Cloud – Risks and rewards of moving applications to the cloud“. Both papers are very interesting and informative. Especially the second one suggests the following very straight [...]

• Cloud Computing – Amazon, Google & Co against HP, IBM & Co

How are the competitive relationships between hardware suppliers and service companies on the Internet impacted by the new utility computing paradigm.

Just something, I would like to write down her, because it cost me a lot of time to figure out. I couldn't talk to the Android simulator in eclipse after upgrading my system. I had to change in /etc/sysctl.d/bindv6only.conf the variable net.ipv6.bindv6only from 1 to 0. This seems also to concern other networking problems in Java - not so sure if it is at all 64 bit related, but it happened with this update.

Security is the most vulnerable part of any P2P system. In F2F we are bootstrapping P2P TCP communication using existing IM protocols (which are secure and authenticated by default). However the flexible communication layer of the F2F Computing allows to operate in TCP only (after successful bootstrap routine). In other words once the peer joined the private F2F group using his IM account, he is automatically connected to all the participants through TCP as well. Now if this new peer goes offline/online the P2P communication should be restored quickly without IM usage. Thanks to help of the Security Group of CS department we designed one possible solution and currently  start implementing it.

Java is a popular mainstream language its support is essential to increase the F2F Developers Community. In the beginning of this year we implemented JNI support in F2F Core, now the pure Java development (without even thinking of F2F C-nature) is possible. Currently we are working on stabilizing the first Java based F2F console Front-End (called Headless-Java by analogy to Headless-Python). If the mentioned console application will be approved successful, the next will be to port F2F Core (with JNI support) to the  Sip Communicator messenger.

The IPv4 is officially exhausted,  and there are number of services in the Web already which are IPv6 only (exmple: ipv6.google.com). However the major ISP are still using IPv4 preventing direct routing to IPv6 sites. Currently the issue is solved by tunneling the IPv6 routes through IPv4 networks. However the setup is not intuitive enough to the mainstream users. Because of this fact we propose F2F based private IPv6 Proxy solution. It allows to expose the IPv6 routing gateways in private F2F Group. In other words  if one of the friends occurs to have pure IPv6 he can a be a IPv6 proxy for his  friends (who have IPv4 only) within the private F2F group. All the IPv6 requests within the  private group will be served by Proxy-Friend. Currently we are looking for the lightweight opensource proxy utility to embed into F2F distributed application.