MBTA realtime XML feed

Sun 07 February 2010 by Lars Kellogg-Stedman Tags xml gps transportation bus location mbta

The MBTA has a trial web service interface that provides access to realtime location information for select MBTA buses, as well as access to route information, arrival prediction, and other features. More information can be found here:

http://www.eot.state.ma.us/developers/realtime/

The service is provided by …

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Blocking VNC with iptables

VNC clients use the RFB protocol to provide virtual display capabilities. The RFB protocol, as implemented by most clients, provides very poor authentication options. While passwords are not actually sent "in the clear", it is possible to brute force them based on information available on the wire. The RFB 3 …

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NFS and the 16-group limit

Tue 02 February 2010 by Lars Kellogg-Stedman Tags groups nfs

I learned something new today: it appears that the underlying authorization mechanism used by NFS limits your group membership to 16 groups. From http://bit.ly/cBhU8N:

NFS is built on ONC RPC (Sun RPC). NFS depends on RPC for authentication and identification of users. Most NFS deployments use an …

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Cleaning up Subversion with Git

Fri 29 January 2010 by Lars Kellogg-Stedman Tags svn versioncontrol git subversion

Overview

At my office, we have a crufty Subversion repository (dating back to early 2006) that contains a jumble of unrelated projects. We would like to split this single repository up into a number of smaller repositories, each following the recommended trunk/tags/branches repository organization.

What we want to …

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Linux UPnP Gateway

Fri 29 January 2010 by Lars Kellogg-Stedman Tags networking peertopeer linux upnp

Like many other folks out there, I have several computers in my house connected to the outside world via a Linux box acting as a NAT gateway. I often want to use application such as BitTorrent and Freenet, which require that a number of ports be forwarded from my external …

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