Month: January 2011

HDMA Desktop

Because of some double boughts from ebay I owned a server board and some peripherials and decided to build a new desktop computer with minimum noise and highest performance I can get at no costs. So I build an open housing for the computer and used passive coolers with only one active fan. The complete system is restrained between two wooden bars and two 17″ LCD monitors on top.

Camera 360

IMAG0048

As one of my previous LCDs just stopped working I spent some money on a used replacement and found two Lenovo Flatpanels which are now included in my setup. With the replacement I also introduced a rotating screen carrier. Now the computer is located beside and at the edge of my desktop and the screens may be rotated into sight.

OTP – One Time Passwords

After the installation of anyterm on my sheeva I am now working on the integration of One Time Passwords to enable fullaccess to my network even from a compromised workstation in an internet cafe.

I decided to go with OPIE – One-time Passwords In Everything which is using the S/KEY system (http://www.inner.net/opie).  The installation is as easy as:

aptitude install opie-server opie-client

after that the pam module for SSH must be adjusted:

/etc/pam.d/sshd

auth sufficient pam_unix.so
auth sufficient pam_opie.so
auth required pam_deny.so

must be in whereas:

@include common-auth

must be out.

Initialisation is done via:

opiepasswd -c

which gives you back the first password and seed. You need to give a passphrase for the actual account before the command completes.

With the command opiekey the sequence number and the passphrase you can also get the apropriate password or with the option -n <number> a list of usable
passwords for printing.