Here is a step-by-step tutorial how to configure a fit-PC2 running Ubuntu 9.10 to connect to a WPA2 protected WLAN. First, follow the instructions on http://www.fit-pc2.com/forum/viewtopic.php?f=43&t=1150 to install some fit-PC2 packages that ensure the hardware support. After rebooting, the system should use the fit-PC2 kernel: # sudo uname -r 2.6.31-34-fitpc2 Next, create the file /etc/wpa_supplicant/wpa_supplicant.conf [...]
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Configure nullmailer to use SMTP authentication
nullmailer is a minimalistic and easy to configure MTA (mail transport agent). It is described on the homepage as follows: Nullmailer is a mail transport agent designed to only relay all its messages through a fixed set of “upstream” hosts. It is also designed to be secure. nullmailer is a good choice for systems that [...]
Read more…CrashPlan PRO & Windows: How to connect to a remote (headless) CrashPlan PRO client running on Linux
To configure a remote (headless) Linux CrashPlan PRO client with a Windows system follow the step by step instructions below after you have installed CrashPlan PRO on your Windows and the remote system. Close the CrashPlan Application if it is open (you do not need to end the CrashPlan background backup service). Download plink.exe from [...]
Read more…Ubuntu/Debian & Postfix: Increase attachment size limit
By default postfix limits the attachment size to about 10 MB. You can determine the current limit with the following command: # sudo postconf | grep message_size_limit message_size_limit = 10240000 To increase the limit add (or change) the following setting in the file /etc/postfix/main.cf: # 20MB message_size_limit = 20480000 After restarting the postfix service the [...]
Read more…Debian Lenny 5.0: Bind RPC port mapper portmap to local loopback
By default on Debian Lenny the portmap service listens on UDP port 111. For security reasons it could by reasonable to prevent portmap from opening the port if you do not run services like NFS or NIS services that depend on a RPC port mapper like portmap. One way to to disable the open port [...]
Read more…XenServer 5.6 & Debian Lenny: Fix apt-get/aptitude GPG error
If you follow the instructions in the Citrix Developer Network to set up a (paravirtualized) Debian Lenny guest system apt-get or aptitude will show the following error W: GPG error: http://updates.vmd.citrix.com lenny Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 841D6D8DFE3F8BB2 W: You may want to run apt-get [...]
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