http://blogs.freebsdish.org/gnn Just another FreeBSD Committers Blogs weblog Wed, 23 Apr 2008 12:56:33 +0000 http://backend.userland.com/rss092 en TCP is the protocol that gets the most attention, and that makes some sense as it's the one that carries your email and web pages, the two most popular applications on the net.   There are times, though, when TCP is not appropriate, like when you want to multicast data to ... http://blogs.freebsdish.org/gnn/2008/04/23/testing-multicast/ I was interviewed recently by Will Backman, the host of BSD Talk, about the latest changes in IPsec in FreeBSD. The podcast can be heard here: http://bsdtalk.blogspot.com/ http://cisx1.uma.maine.edu/~wbackman/bsdtalk/bsdtalk121.ogg http://blogs.freebsdish.org/gnn/2007/07/18/interview-on-bsdtalk-about-the-new-ipsec/ As of about 2 weeks ago the IPsec implementations in FreeBSD were changed such that the old, Kame, IPsec is no longer in the system, and the system that was once called FAST_IPSEC is now the official IPsec of FreeBSD. What does this mean to you?  FreeBSD IPsec is now MP Safe, ... http://blogs.freebsdish.org/gnn/2007/07/14/fast_ipsec-is-now-ipsec-in-freebsd/  Unlike suspend/resume on a laptop the guest operating system in a Virtual Machine doesn't know when it has gone to sleep and woken up. The best way to get it to keep time correctly is to use ntpd (see ntpd(8) and ntp.conf(5)). In order to keep ntpd running you have ... http://blogs.freebsdish.org/gnn/2007/04/29/keeping-time-in-a-virtual-machine/ Will Backman of BSDTalk interviewed me about my work with kernel development and virtual machines. You can find the podcast here: http://cisx1.uma.maine.edu/~wbackman/bsdtalk/bsdtalk109.mp3 and you can find all the podcasts on BSDTalk here: http://bsdtalk.blogspot.com/ I'll be adding more posts about working with virtual machines in the near future. http://blogs.freebsdish.org/gnn/2007/04/29/bsdtalk-podcast-on-virtual-machines/ One of the reasons to use virtual machines is that they make kernel debugging easier. No messing about with serial cables anymore, the simulator provides you with virtual serial ports, which to the operating system look just like real serial ports. In this entry I'll explain how to ... http://blogs.freebsdish.org/gnn/2007/03/11/remote-gdb-on-vmware/ I was interviewed recently by Will Backman of BSDTalk about PCS and Packet Debugger. The full interview is here: <a href=http://cisx1.uma.maine.edu/~wbackman/bsdtalk/bsdtalk101.mp3>Interview</a> and the BSD Talk page itself is here: <a href=http://bsdtalk.blogspot.com/>BSDTalk Page</a> http://blogs.freebsdish.org/gnn/2007/02/28/pcs-and-packet-debugger-on-bsdtalk/ In order to facilitate the debugging of networking code I have used my library, <a href=http://pcs.sf.net>Packet Construction Set aka PCS</a> to write a program I call the <a href=http://pktdbg.sf.net>Packet Debugger (pdb)</a>. All of this is written in Python and available under a BSD license. The blurb from the ... http://blogs.freebsdish.org/gnn/2007/02/08/announcing-the-packet-debugger/ This post points to two files, PARA, my kernel configuration file, and loader.conf which sets the kernel's HZ back to 100. The default hz in FreeBSD CURRENT (will be 7.0) is now 1000 which is too high for Parallels to keep up with and causes it to eat about ... http://blogs.freebsdish.org/gnn/2007/02/08/configuration-files-for-freebsd-development-on-parallels/  As some of you may, or may not know, I tend to do a lot of my kernel development in virtual machines, such as <a href=www.vmware.com>VMware</a> and now <a href=http://www.parallels.com/>Parallels</a> on my MacBook. I find that virtual machines make the perfect test lab because you can easily create, copy, ... http://blogs.freebsdish.org/gnn/2007/02/08/parallels-desktop-as-a-network-development-system/