Noklab/Lab Computer

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Lab PC

Lab01

There is a very old computer in the lab that can be used if you forgot your laptop power supply or just came by. Or if you do not want to risk your own hardware while connecting a device you just built.

Turning It On

Geht gerad nicht, da Labrechner 2.0 und Autologin noch nicht eingerichtet, bzw. anderes PW als der alte Rechner.

You have to flip the manual power switch on the power supply. The PC will then turn on automatically. The system is configured for autologin as penny.

Turning It Off

Just shut down the system as usual, then switch off the switch on the power supply.

Printing

see Noklab/Printer

Joining the MUC

There is a dedicated XMPP account for penny, just start pidgin.

Turning It On - Remotely

If you want to start penny remotely, you need a special key save it to ~/.ssh/remote_dropbear_id_rsa:

-----BEGIN RSA PRIVATE KEY-----
MIICYwIBAAKBgndy8y+sy1TRHdKqKGOGx8NXjC6lBYxx98w6vwUdWbZxGEo/x++q
bSHc362CCufaoJlsDcEqBB5lK+2f4wGa9YEbqtZNsnPfvEVFB9Lbx45ZDlt/3rqX
hkN38W0un5FZcx3Ppz/Ro+vrJaJNt23x7nwq1qJJr9RYvvqIpx9LgcLy+00CAwEA
AQKBggeMJtuTUoG4eObvw3+Oa57nMD9eQ/x80wh/icRb92g0uzEt2IdHQIAMQcHn
3qKJyO4IytGywvHcuKraGHDohqyyqalHdYUZc0/Gz24RUaJHoEv7gLYaep0f1ToG 
yjTQJknZWjwMERDAumBI2uOPY00uPFjVZwAQh8BM+jRLMt7xewECQgCgXYA3mO5i
9HCBCCVh994vBGGa/S30jaxS7uuEu3z+CoRTHUNjFc3dbdB15Ypy+5XQZLjlIMEn
NY7pOW1aTG9rQQJCAL6u43BPqYyswA0S/x3WshrGOP15Vf1NibJI2RFW68hZHLXp
Ktajrm3qOmq93LQIfi4Mfs/tbHQMJemWpoFXdUkNAkFJy30LGJbqdm2nEuaQ9I0L
ucpolgUlumQILeW3SMe154UI8jhmSkxXjwcUmbJiQx+nrBHhbncz4dOHw2Ns4CuN
gQJBFix2LEhHOiGYj6ym2AxwV6a3V9p1Qmhy27WW8GpALuMV8J11qtIL5aI4OtNr
R9A5BBfV404Dr5b+DaTEJgRKkj0CQVcY5vMJIcfBrljms+xX0jO0BPtNiQqIJobl
ZJQvMMXosXRHqfzqe4/wu/5radbbGSxvnYm/6LegyB67lTAA/gV7
-----END RSA PRIVATE KEY-----

And a new knwon_host file (.ssh/.ssh/known_hosts.initramfs):

|1|vMJrq/P0HbVhbVWENsuvF4w/Dgk=|//fdEvPyUeaYVNm2sAXklHxttC4= ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAglJE2x6GOphU0FMDwDnpllMyhL4gj14DE2YzQfOIS5aMfvl3cEh7p+CEW+MWhRpf7bmJ3tXT8E7dvrDGw7Ag8IXnlkAKh2xcpkudEcT6gvK5pxUPcD1hObodVX2dT6KSHBbadd2FkGJtMkabEnNpN0qDA1QKZHfsVbh5A3+0OI8awL8=

Now you have to run following command:

ssh -o "UserKnownHostsFile=~/.ssh/known_hosts.initramfs" -i ~/.ssh/remote_dropbear_id_rsa  root@10.23.42.125 "echo -ne "PASSPHRASE" > /lib/cryptsetup/passfifo"

Or modify the .ssh/config:

Host penny-login
       Hostname 10.23.42.125
       User root
       IdentityFile /home/hefee/.ssh/remote_dropbear_id_rsa
       UserKnownHostsFile /home/hefee/.ssh/known_hosts.initramfs

Afterwards the folloing command:

ssh penny-login "echo -ne "PASSPHRASE" > /lib/cryptsetup/passfifo"

lab02

ipv4:10.23.42.117

 -----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

|1|+mJbwJfXefv6exw2f8ljEKsfft8=|pgSI7M/S8+jtnZf9DG0wQh2Gw68= ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgn5EXI5ulOZs/4WvTotVL4LycHeLnvUpkOm0VyW/ydbm9e44iuiqdkUT9IZMVz3LM2au/DBLKQu4USzBAEnsu3+U/Xn9Bt1reA3qlUwFxEcLtKQ6sc9DPbZEGG9BfNptquht3hZ9b+cHra9DmK+awidurra3PaB3BONNx1DcqjfUf88=

Nas2 access: run

~/nas2/mount.sh

to mount the nas2 crypto partition to

/tmp/nas/

Badblock

Badblock is the heavily decorated laptop located somewhere in the space. It has a Core2 Duo CPU, 1G of ram and lots of HD space (500G). It can be used as an emergency-laptop if you forgot your own or your battery is dying, or as a remote desktop connected to the beamer for multiple people to work on. Pixelflut is installed, too.