Angry IP scanner is a free network scanner which supports Mac OSX, Windows and Linux. It has an intuitive GUI which makes it easy to use. You can download Angry IP scanner here, more screenshots are available here.
Fixing Cyrus SASL(-13): authentication failure: checkpass failed error
The last few days I keep having trouble connecting to my imap server running Cyrus. I started to view my syslog when trying to authenticate to the Cyrus server, there was one line interesting:
Cyrus SASL(-13): authentication failure: checkpass failed error
I thought it should have something to do with the passwords so I tried to enter the Cyrus server with:
# cyradm localhost
When I entered my password I could not connect. This was weird since I was 100% sure about the correctness. To be sure I resetted all my imap box passwords using:
# saslpasswd2 username
This didn’t fix it either. Then I read on a website about the saslauthd daemon not running. I restarted the service and everything worked as normal 🙂 My guess is that an Ubuntu update stopped the saslauthd daemon but did not restart it.
Readout sensors of an EEE Box running Ubuntu server
A while ago I posted about how one can install Kubuntu on a netbook without cd-rom device. Although there were some issues on the NC10 still it worked pretty neat. Two days ago Kubuntu Jaunty (9.10) was released. I updated my NC10 with this version and this is what I discovered:
Video artifacts in KDE login screen disappeared
Speakers are muted when plugging in earphones
Getting Wifi to work is a lot harder than the old Kubuntu version (especially 802.1x). I have to use knetworkmanager to make it work (sometimes it does not work at all).
The screen brightness can be set with the slider of the energy widget.
If you are a hacker, what is the thing you want to be on a Linux System? Root. You can try to access a ssh server with the root user. There is an option in the ssh server configuration which prevents a remote root login. This does not mean you can not become root, it means no one can directly login as the root user. So if you are logged in as Alice you can simple enter the “su” command to become root.
How we can prevent the remote root login is described below.
When I bought my Samsung NC10, I noticed some weird behaviour of the sound card; when I plugged in my headphone the speakers still played sound as well. This morning I updated my Kubuntu running Samsung NC10 with a new kernel: 2.6.27-11-generic. After a reboot I noticed I finally had a headphone slider in KMixer.
I have my netbook, and I have a server. Now I want to sync files between these machines in order to keep a backup of all the documents of my netbook on the server. I found a page which explains how to sync between two servers. With a little tweak I created the command which I needed in order to sync the two folders.