Tag Archives: linux

Linux

Linux: Mount a Windows share with kerberos authentication

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Hi,

in some secure environments only kerberos authentication is allowed to connect to a Windows file share.

This example demonstrate the procedure on how to mount a share on a Debian 7 (Wheezy)  Linux. Other distributions should provide a simliar way.

First of all install the necessary pakets.

michael@debdev:~# apt-get install krb5-user krb5-config cifs-utils keyutils

After installing the packages the Kerberos configuration wizard starts.
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Linux

Linux: Kerberos authentification against Windows Active Directory

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Hi,

here are some steps to use kerberos authentification against a active directory with OS Version Windows Server 2008 R2 or later on your linux machine.

The default krb5 configuration implementation of the most linux distributions did not work out of the box. I assume that the REALM in /etc/krb5.conf is already configured.

Typical error messages are:

kinit: KDC has no support for encryption type while getting initial credentials
kinit: KDC reply did not match expectations while getting initial credentials

michael@debdev:~# kinit  michael@subdomain.domain.local
Password for michael@subdomain.domain.local:
kinit: KDC has no support for encryption type while getting initial credentials

To eliminate the “KDC has no support for encryption type while getting initial credentials” issue change the default encryption type in the libdefaults section of the /etc/krb5.conf file.
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EIB/KNX, Linux, Raspberry PI

EIB/KNX: Upstart startup script for eibd

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Hi,

as a follow up of the 2 previous posts(compiling eibd and SysV startup script) here is a sample Upstart script for the eibd daemon. Some Ubuntu based distributions uses the upstart start mechanism.

Login as root at your machine where eibd is installed and add a user under  which the eibd process should run.

useradd eibd -s /bin/false -U -M

Create the upstart conf file /etc/init/eibd.conf

#######################################################################
# eibd - startscript for the eibd daemon
description "eibd daemon Upstart script"
author "Michael Albert info@michlstechblog.info"

start on (filesystem or resume)
stop on (suspend or runlevel [!2345])
expect fork
normal exit 0

pre-start script
route add 224.0.23.12 dev eth0 2>&1 > /dev/null || true
end script

script
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/local/bin/eibd
DAEMON_OPTS="-d -D -T -R -S -i -u --eibaddr=1.1.128 ipt:192.168.56.1"
exec start-stop-daemon --start -c eibd --exec $DAEMON -- $DAEMON_OPTS
end script

post-stop script
route delete 224.0.23.12 2>&1 > /dev/null || true
end script
#######################################################################

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EIB/KNX, Linux

KNX/EIB: System V startscript for eibd

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Hi,

in a previous post I have descriped how to compile the eibd daemon for the Raspberry PI. Here is a sample debian startscript to start eibd at system boot.

Login as root at your EIBd box and  created a user under which the daemon should run.

useradd eibd -s /bin/false -U -M

Create the script eibd in /etc/init.d
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EIB/KNX, Linux, Raspberry PI

Raspberry PI: Cross compiling the KNX/EIB eibd

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Hello,

if you want to use the Raspberry PI as a EIB/KNX Gateway or Tunnel you must compile the eibd sources from the scratch, because no precomplied binaries are currently available.

There are two ways to build the eibd. Compiling directly on the Raspberry PI or you compile it on your i386 PC. The last option means you have to “cross” compile the sources, because the RapsberryPi has a different processor architecture than your Intel/AMD PC. Here are the steps to build the eibd on an i386 using a crosscompiler for the ARM architucture.

I verfied the steps at a minimal debian system in a VirtualBox. So it is reproducible:-)

Install all necessary packages. Login as root

apt-get -y install git rsync cmake make gcc g++ binutils automake flex bison patch
Now you can Login as a “normal” user. Define a working folder
export BUILD_PATH=~/eibdbuild
mkdir -p $BUILD_PATH
cd $BUILD_PATH
We need a cross compiler respectively the toolchain for the arm1176jzf arm processor.
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