Computer Tips -Tech Info

Just updated some information on the Virtualization page adding some information about virtualbox which I have spent some time with lately. I’ve also had a big vpn/dd-wrt project going which I’ve teased out a bit of information on my dd-wrt and openvpn pages. I haven’t given our “recipe” for it yet, but it’s a vpn […]

For quite some time I’ve been making use of a dd-wrt modified linksys box on my home network as an openvpn endpoint so that when I’m out and about in the world, I connect the vpn, switch firefox to route through a squid proxy server on the home network and I’ve got a nice fairly […]

Openvpn has been one of the tools of choice this week, so as I was tinkering on my ubuntu boxen…. I thought why don’t I install openvpn there as well for a little broader testing. So, I did, but was a bit disappointed to see that the version was not the most current. (Yes, they […]

I found a peculiar problem while I was setting up an openvpn link the other day. The goal was a simple shared key setup and I started with the sample configuration and modified it a bit to fit the circumstances, I allowed the correct UDP port through the firewall (I think 1194 if I recall […]

The last time I used openvpn, it was version 1.x and only supported a single connection per running process. So, if you had a server that you wanted to support multiple clients connecting, you had to… have multiple ports open to the outside world (unless you did something VERY fancy), and had to have as […]

After the Hamachi article I wanted to do a series on OpenVPN. I’ve used it before, but not since the 1.x days…. it’s now at version 2.0.5 and has quite a bit more flexibility. When I first used it, it was pretty much a point-to-point vpn solution. You could set up routing to see the […]

A few days back I was at grc to run a “shields up” scan on a clients machine and found reference to their Security Now podcast (Leo Laporte and Steve Gibson.) The cast was about a VPN tool called Hamachi… so I revisited and gave a read to the Security Now! transcript. And then visited […]

Again – I’m NOT an expert on the subject, but have had some success with building rpm’s from either src.rpms (covered last time) and building from tarballs… This entry will talk about the simplest kind of rpm build from tarballs. This is a situation where the developer’s in their great foresight have actually got a […]

Sorry, VERY bad pun but I couldn’t resist. I mentioned that I was having tun difficulties that kept me from playing around with anything fancy networking-wise with qemu. For starters let me see if I can explain what tun is. Tun is a method of creating a point-to-point “imaginary” network connection between a program and […]