[Server-devel] VPN server for our project
Hi, OLPC France is plannig a project Windrose (http://wiki.laptop.org/go/Projects/WindroseOLPC ) consisting for the schools among the world participating in the project to share and publish their contents (text, images, videos, etc.) in a semi-private BLOG (likely EduBlogger). My question: has anyone experimented the fonction of a VPN network involving remote XS servers ? Our concern is to protect the privacy of the kids, allowing private areas and public areas and making the login process easier for the kids/teachers. The communication/authentification to the VNP server will possibly be organised via a local XS server. Thank you for your comments Best regards Samy ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] VPN server for our project
I've tested PPTP and OpenVPN on XO. Works fine. The PPP MPPE module is already present (drivers/net/ppp_mppe.ko). Using a VPN adds overhead to the network communication. Isn't as secure as you might think. I'm the release engineer for PPTP on Linux, and C. Scott Ananian in OLPC is the author. I've not tried it on XS. PPTP project did some load calculations a year or two ago, and found that a 500Mhz 64Mb server could handle several hundred users so long as they did not try to do something all at the same time. It would be practical to test on XS, but it is a zero sum game, you'd lose capacity. In my opinion, avoid creating a false sense of security ... the kids should be taught personal information privacy very early, and the best way to do that is for them to make small mistakes and learn from them. France. Are you sure you can use strong cryptographic encryption? I seem to remember some hindrance at law. I haven't kept up to date with that. -- James Cameronmailto:[EMAIL PROTECTED] http://quozl.netrek.org/ ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] VPN server for our project
On Sun, Jun 22, 2008 at 9:49 PM, [EMAIL PROTECTED] wrote: My question: has anyone experimented the fonction of a VPN network involving remote XS servers ? The hw will have no problem with running VPNs but many XS will be on networks links that are very constrained and don't play well with VPNs (such as satellite links). cheers, m -- [EMAIL PROTECTED] [EMAIL PROTECTED] -- School Server Architect - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] VPN server for our project
Selon James Cameron [EMAIL PROTECTED]: I've tested PPTP and OpenVPN on XO. Works fine. The PPP MPPE module is already present (drivers/net/ppp_mppe.ko). Using a VPN adds overhead to the network communication. Isn't as secure as you might think. Yes, we should find out the right balance between opposite concerns. I'm the release engineer for PPTP on Linux, and C. Scott Ananian in OLPC is the author. I've not tried it on XS. PPTP project did some load calculations a year or two ago, and found that a 500Mhz 64Mb server could handle several hundred users so long as they did not try to do something all at the same time. It would be practical to test on XS, but it is a zero sum game, you'd lose capacity. ok In my opinion, avoid creating a false sense of security ... the kids should be taught personal information privacy very early, and the best way to do that is for them to make small mistakes and learn from them. I imagine, that the kids will be monitored by their teachers, who will eventually direct the reporting and publishing activities so that they are acceptable depending of the privacy policy of the schools. France. Are you sure you can use strong cryptographic encryption? I seem to remember some hindrance at law. I haven't kept up to date with that. The length of the encryption keys may be limited. Not sure how long. Another dimension is that the VPN server, if any, can be hosted here in France or in another country where our future partners are be located. Thank you for your usefull comments Bests Samy -- James Cameronmailto:[EMAIL PROTECTED] http://quozl.netrek.org/ ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
[Server-devel] Target price and quantitiy
Hi, I was playing around with some embedded computing and rugged hardware and got some questions. Whats the target price for the school server? How many school server are needed anyway? As you might know, its my job to design such systems, please dont take this questions the wrong way. I dont want to sell anything, but Im interested in supporting this project. ;) Best regards, Christopher ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] Server-devel Digest, Vol 14, Issue 38
From: James Cameron [EMAIL PROTECTED] In my opinion, avoid creating a false sense of security ... the kids should be taught personal information privacy very early, and the best way to do that is for them to make small mistakes and learn from them. James, While I agree this is a lesson everyone eventually learns, even IBM offers both for its employees, a blogging system that is internal (IBM employees only can read) and one that is external (all clients, prospects, competitors and analysts can read). We have found that some people need to practice on the bunny slopes first, and would prefer not to have their mistakes be so drastic or dire in consequences. Offering a blog option for students/teachers eyes only might be the difference between a parent allowing their kid to participate or not participate. -- Tony___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] Target price and quantitiy
On Jun 22, 2008, at 2:19 PM, Christopher Niemöller wrote: Hi, I was playing around with some embedded computing and rugged hardware and got some questions. Whats the target price for the school server? Around 500 USD for a server plus 500GB disk. Networking (access points and switches) are additional (although ideally a four port switch is built in...) How many school server are needed anyway? One per school... Larger schools need more capable servers. There is no single solution, from a product design perspective. If we concentrate on the needs of smaller rural schools (30-300 kids), we are talking about the $500 server mentioned above, with tough environmental constraints. In this case, we are unfortunately only talking about 5K-10K units per year, and these are spread across multiple countries. As you might know, its my job to design such systems, please dont take this questions the wrong way. I dont want to sell anything, but Im interested in supporting this project. ;) We have no problem with people interested in selling stuff. We need to buy servers ourselves for use in trials, etc... Cheers, wad ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
