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  • unit-file | My 2µF
    there is a unit file for after local backward compatibility Continue reading Posted in Computer Server Tagged systemd unit file Leave a comment Search for Recent Comments robert on YauDL Y et a nother u seless D ummy L oad Andrew Duckworth on YauDL Y et a nother u seless D ummy L oad robert on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Archives Archives Select Month January 2016 1 December 2015 2 November 2015 3 October 2015 2 September 2015 10 July 2015 4 June 2015 5 May 2015 2 April 2015 5 March 2015 3 February 2015 2 January 2015 1 December 2014 2 November 2014 2 October 2014 3 September 2014 1 August 2014 2 July 2014 2 June 2014 2 May 2014 2 April 2014 4 March 2014 3 February 2014 2 January 2014 1 December 2013 3 November 2013 6 October 2013 3 August 2013 3 July 2013 2 June 2013 6 May 2013 6 February 2013 2 January 2013 5 December 2012 1 August 2012 2 July 2012 7 June 2012 6 May 2012 5 April 2012 6 March 2012 2 February 2012 1 January 2012 3 December 2011 5 October 2011 2 September 2011 1 August 2011 1 July 2011 3 June 2011 1 March 2011 2 February 2011 5 January 2011 2 December 2010 3 November 2010 2 October 2010 1 September 2010 1 July 2010 2 June 2010 2 May 2010 4 March 2010 2 February 2010 2 January 2010 2 December 2009 6 November 2009 1 October 2009 2 September 2009 1 August 2009 4 July 2009 8 June 2009 6 May 2009 3 April 2009 5 March 2009

    Original URL path: http://blog.spitzenpfeil.org/wordpress/tag/unit-file/ (2016-02-10)
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  • “Easy” remote-admin — take 2 | My 2µF
    occupied by the standard SSH server Choose something else maybe 66 Adapting the firewall to allow incoming traffic is handled by a script which we will take a look at further down To prepare for password less logins using a public key the remote user must transfer his public key e g id rsa pub to the local account to be logged into The remote user son wanting to log in to the local account dad must append his public key son gamer home son ssh id rsa pub to dad mozart home dad ssh authorized keys This can be done in two ways Either manually copy append the contents of id rsa pub sun gamer to authorized keys dad mozart or use the tool ssh copy id For the latter option the standard SSH server on mozart must be up and running port 22 as son gamer ssh copy id i home son ssh id rsa pub p 22 dad mozart output usr bin ssh copy id INFO attempting to log in with the new key s to filter out any that are already installed usr bin ssh copy id INFO 1 key s remain to be installed if you are prompted now it is to install the new keys Password Number of key s added 1 Now try logging into the machine with ssh dad mozart and check to make sure that only the key s you wanted were added 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 as son gamer ssh copy id i home son ssh id rsa pub p 22 dad mozart output usr bin ssh copy id INFO attempting to log in with the new key s to filter out any that are already installed usr bin ssh copy id INFO 1 key s remain to be installed if you are prompted now it is to install the new keys Password Number of key s added 1 Now try logging into the machine with ssh dad mozart and check to make sure that only the key s you wanted were added Password less login to dad mozart should work now An additional SSH server will be started by a script after booting It will make sure the SSH server is configured in such a way that it only allows public key authentication for normal users Root login will be rejected 4 EMAIL CONFIGURATION works with YAHOO and another provider To make sure that dad s machine mozart can send out emails using his usual email account some modifications to home dad mailrc are necessary set asksub append dot save crt 20 ignore Received Message Id Resent Message Id Status Mail From Return Path Via set smtp smtp provider com 25 set smtp use starttls set smtp auth login set smtp auth password whatever set smtp auth user dad provider com 1 2 3 4 5 6 7 8 set asksub append dot save crt 20 ignore Received Message Id Resent Message Id Status Mail From Return Path Via set smtp smtp provider com 25 set smtp use starttls set smtp auth login set smtp auth password whatever set smtp auth user dad provider com You can test outgoing emails by issuing the following command run as dad mozart echo email body mail v r dad provider com s subject son somewhereelse com 1 echo email body mail v r dad provider com s subject son somewhereelse com This should send out an email show the connection details going back and forth It is crucial that this step works If it doesn t work make sure that mailrc has correct ownership and permissions dad users 600 rw 5 EVALUATION OF BOOT PARAMETERS On openSUSE you can add custom stuff to a script etc init d after local which is run after a runlevel has been reached bin sh Copyright c 2010 SuSE LINUX Products GmbH Germany All rights reserved Author Werner Fink 2010 etc init d after local script with local commands to be executed from init after all scripts of a runlevel have been executed Here you should add things that should happen directly after runlevel has been reached USER dad SSH PORT 66 SSHD BIN which sshd CMD LINE proc cmdline LOOK FOR start rescue ssh RESULT grep LOOK FOR CMD LINE EMAIL FROM dad provider com EMAIL TO son somewhereelse com EMAIL SUBJECT Fix dad s computer EMAIL TEXT Fix dad s computer n nShared ssh 4 p SSH PORT t L 6900 localhost 5900 USER REMOTE IP x11vnc ncache localhost display 0 n nStand alone ssh 4 p SSH PORT t L 6900 localhost 5900 USER REMOTE IP x11vnc create ncache localhost n nvncviewer compresslevel 9 quality 5 encodings tight localhost 6900 if n RESULT then make sure WiFi is really up make sure WiFi is set to system connection in NetworkManager so it starts without user login sleep 60 echo booted with start rescue ssh starting ssh logger booted with start rescue ssh starting sshd punch a hole into the firewall iptables I INPUT 1 p tcp dport SSH PORT j ACCEPT start extra SSH server SSHD BIN 4 p SSH PORT o PermitRootLogin no o PubkeyAuthentication yes o PasswordAuthentication no o ChallengeResponseAuthentication no IP FILE sudo u USER mktemp sudo u USER sh c curl s checkip dyndns org IP FILE REMOTE IP cat IP FILE sed s Current IP Address sed s 0 9 1 3 0 9 1 3 0 9 1 3 0 9 1 3 1 rm IP FILE EMAIL TEXT echo EMAIL TEXT sed s REMOTE IP REMOTE IP g sed s USER USER g sed s SSH PORT SSH PORT g sudo u USER sh c echo e EMAIL TEXT mail s EMAIL SUBJECT r EMAIL FROM EMAIL TO fi 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

    Original URL path: http://blog.spitzenpfeil.org/wordpress/2015/09/08/easy-remote-admin-take-2/ (2016-02-10)
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  • admin | My 2µF
    on September 7 2015 by robert Yes I know about KDE desktop sharing FreeNX and relatives and again yes this is nothing new but someone might still find it useful I wanted and needed something simple something that could be activated in the bootloader menu grub Continue reading Posted in Computer Server Tagged admin linux remote VNC Leave a comment Search for Recent Comments robert on YauDL Y et a nother u seless D ummy L oad Andrew Duckworth on YauDL Y et a nother u seless D ummy L oad robert on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Archives Archives Select Month January 2016 1 December 2015 2 November 2015 3 October 2015 2 September 2015 10 July 2015 4 June 2015 5 May 2015 2 April 2015 5 March 2015 3 February 2015 2 January 2015 1 December 2014 2 November 2014 2 October 2014 3 September 2014 1 August 2014 2 July 2014 2 June 2014 2 May 2014 2 April 2014 4 March 2014 3 February 2014 2 January 2014 1 December 2013 3 November 2013 6 October 2013 3 August 2013 3 July 2013 2 June 2013 6 May 2013 6 February 2013 2 January 2013 5 December 2012 1 August 2012 2 July 2012 7 June 2012 6 May 2012 5 April 2012 6 March 2012 2 February 2012 1 January 2012 3 December 2011 5 October 2011 2 September 2011 1 August 2011 1 July 2011 3 June 2011 1 March 2011 2 February 2011 5 January 2011 2 December 2010 3 November 2010 2 October 2010 1 September 2010 1 July 2010 2 June 2010 2 May 2010 4 March

    Original URL path: http://blog.spitzenpfeil.org/wordpress/tag/admin/ (2016-02-10)
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  • iptables | My 2µF
    config firewall In this post Continue reading Posted in Computer Server Tagged admin iptables linux port forwarding remote router SSH sshd VNC Leave a comment Search for Recent Comments robert on YauDL Y et a nother u seless D ummy L oad Andrew Duckworth on YauDL Y et a nother u seless D ummy L oad robert on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Archives Archives Select Month January 2016 1 December 2015 2 November 2015 3 October 2015 2 September 2015 10 July 2015 4 June 2015 5 May 2015 2 April 2015 5 March 2015 3 February 2015 2 January 2015 1 December 2014 2 November 2014 2 October 2014 3 September 2014 1 August 2014 2 July 2014 2 June 2014 2 May 2014 2 April 2014 4 March 2014 3 February 2014 2 January 2014 1 December 2013 3 November 2013 6 October 2013 3 August 2013 3 July 2013 2 June 2013 6 May 2013 6 February 2013 2 January 2013 5 December 2012 1 August 2012 2 July 2012 7 June 2012 6 May 2012 5 April 2012 6 March 2012 2 February 2012 1 January 2012 3 December 2011 5 October 2011 2 September 2011 1 August 2011 1 July 2011 3 June 2011 1 March 2011 2 February 2011 5 January 2011 2 December 2010 3 November 2010 2 October 2010 1 September 2010 1 July 2010 2 June 2010 2 May 2010 4 March 2010 2 February 2010 2 January 2010 2 December 2009 6 November 2009 1 October 2009 2 September 2009 1 August 2009 4 July 2009 8 June 2009 6 May 2009 3 April 2009 5

    Original URL path: http://blog.spitzenpfeil.org/wordpress/tag/iptables/ (2016-02-10)
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  • linux | My 2µF
    by robert Some time ago I had acquired an ATtiny2313 breakout board and was running into memory limitations I ordered 2 ATtiny4313 on ebay but could compile any code for them As it turns out after a longer odyssey it seems that Continue reading Posted in Electronics Software Tagged ATtiny4313 AVR gcc linux 3 Comments Getting Mathematica fonts to work with pdfLaTeX Posted on February 7 2011 by robert I m busy with writing some stuff and sometimes using Mathematica is simpler and quicker than using GnuPlot Inkscape But getting the fonts to work with LaTex pdfLaTeX WTF Now after several hours it s dark now Continue reading Posted in Software Tagged LaTeX linux Mathematica pdfLaTeX TeXLive Wolfram WTF 1 Comment PulseAudio annoyance headphones killing my ears Posted on October 4 2010 by robert Based on code originally contributed by Marc André Lureau we now support Flat Volumes The idea behind flat volumes has been inspired by how Windows Vista handles volume control instead of maintaining one volume control per application stream plus one device Continue reading Posted in Software Tagged amarok audio headphones linux mp3 pulseaudio Leave a comment Updating the Server Welcome Debian bye bye openSUSE Posted on October 30 2009 by robert My provider has upgraded its VServer plans Now offering 1GB of RAM 20GB of disk and some more CPU power for the same price but openSUSE was phased out My old VServer only hat 256MB or RAM and was kinda Continue reading Posted in Computer Server Tagged debian linux opensuse openVZ upgrade virtuozzo vserver Leave a comment Blocking referer spam with mod security2 using Apache2 Posted on March 25 2009 by robert I have some statistics plugins for WordPress that evaluate what sites refer to my blog I use WassUp StatPress and CyStats Unfortunately some idiot thinks it s funny to bombard my webserver with referer spam Complaining to the local net admin us Continue reading Posted in Computer Server Tagged apache2 linux mod evasive mod security2 referer spam Leave a comment Simple linux load monitor using the 8 8 RGB Matrix Posted on October 26 2008 by robert Now that I ve finished some of the scientific work that was monopolizing my time here s some geeky and nerdy gadget for Linux fans BTW why is it that trying to find out what geeky and nerdy actually means is also Continue reading Posted in Arduino Electronics Tagged AVR gadget LED linux perl PWM RGB 2 Comments Search for Recent Comments robert on YauDL Y et a nother u seless D ummy L oad Andrew Duckworth on YauDL Y et a nother u seless D ummy L oad robert on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Archives Archives Select Month January 2016 1 December 2015 2 November 2015 3 October 2015 2 September 2015 10 July 2015 4 June 2015 5 May 2015

    Original URL path: http://blog.spitzenpfeil.org/wordpress/tag/linux/ (2016-02-10)
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  • port forwarding | My 2µF
    config firewall In this post Continue reading Posted in Computer Server Tagged admin iptables linux port forwarding remote router SSH sshd VNC Leave a comment Search for Recent Comments robert on YauDL Y et a nother u seless D ummy L oad Andrew Duckworth on YauDL Y et a nother u seless D ummy L oad robert on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Archives Archives Select Month January 2016 1 December 2015 2 November 2015 3 October 2015 2 September 2015 10 July 2015 4 June 2015 5 May 2015 2 April 2015 5 March 2015 3 February 2015 2 January 2015 1 December 2014 2 November 2014 2 October 2014 3 September 2014 1 August 2014 2 July 2014 2 June 2014 2 May 2014 2 April 2014 4 March 2014 3 February 2014 2 January 2014 1 December 2013 3 November 2013 6 October 2013 3 August 2013 3 July 2013 2 June 2013 6 May 2013 6 February 2013 2 January 2013 5 December 2012 1 August 2012 2 July 2012 7 June 2012 6 May 2012 5 April 2012 6 March 2012 2 February 2012 1 January 2012 3 December 2011 5 October 2011 2 September 2011 1 August 2011 1 July 2011 3 June 2011 1 March 2011 2 February 2011 5 January 2011 2 December 2010 3 November 2010 2 October 2010 1 September 2010 1 July 2010 2 June 2010 2 May 2010 4 March 2010 2 February 2010 2 January 2010 2 December 2009 6 November 2009 1 October 2009 2 September 2009 1 August 2009 4 July 2009 8 June 2009 6 May 2009 3 April 2009 5

    Original URL path: http://blog.spitzenpfeil.org/wordpress/tag/port-forwarding/ (2016-02-10)
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  • remote | My 2µF
    s a sneak peak Posted in Electronics Tagged Älang bluetooth HC 05 IKEA lamp light remote RGB Samtid wireless WS2812B Leave a comment Small project 3 IR controlled MOSFET with PWM Posted on February 16 2013 by robert Want one Check out tindie com This little thing is a variation of a previous project but now with a majority of the parts in SMD packages Needles to say it is also a lot smaller The 2nd biggest difference is Continue reading Posted in Electronics Tagged ATtiny AVR control IR mosfet PWM remote Leave a comment Adding IR remote control Posted on March 20 2012 by robert Recently I bought a small IR remote control matching 38kHz demodulating receiver at Adafruit I just couldn t find such a small remote over here As it turns out the remote uses the extended NEC data format which is nicely Continue reading Posted in Arduino Electronics Tagged AVR control IR NEC remote 1 Comment Search for Recent Comments robert on YauDL Y et a nother u seless D ummy L oad Andrew Duckworth on YauDL Y et a nother u seless D ummy L oad robert on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Archives Archives Select Month January 2016 1 December 2015 2 November 2015 3 October 2015 2 September 2015 10 July 2015 4 June 2015 5 May 2015 2 April 2015 5 March 2015 3 February 2015 2 January 2015 1 December 2014 2 November 2014 2 October 2014 3 September 2014 1 August 2014 2 July 2014 2 June 2014 2 May 2014 2 April 2014 4 March 2014 3 February 2014 2 January 2014 1 December 2013 3

    Original URL path: http://blog.spitzenpfeil.org/wordpress/tag/remote/ (2016-02-10)
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  • router | My 2µF
    sshd VNC Leave a comment KiCad Interactive Router release version Posted on May 21 2014 by robert Use BZR 4875 or later if you try out the new features Posted in Electronics Tagged CERN kicad layout openGL PCB push router shove Leave a comment Search for Recent Comments robert on YauDL Y et a nother u seless D ummy L oad Andrew Duckworth on YauDL Y et a nother u seless D ummy L oad robert on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Serhii on YOUYUE 858D hotair station BLDC Fan speed mod Archives Archives Select Month January 2016 1 December 2015 2 November 2015 3 October 2015 2 September 2015 10 July 2015 4 June 2015 5 May 2015 2 April 2015 5 March 2015 3 February 2015 2 January 2015 1 December 2014 2 November 2014 2 October 2014 3 September 2014 1 August 2014 2 July 2014 2 June 2014 2 May 2014 2 April 2014 4 March 2014 3 February 2014 2 January 2014 1 December 2013 3 November 2013 6 October 2013 3 August 2013 3 July 2013 2 June 2013 6 May 2013 6 February 2013 2 January 2013 5 December 2012 1 August 2012 2 July 2012 7 June 2012 6 May 2012 5 April 2012 6 March 2012 2 February 2012 1 January 2012 3 December 2011 5 October 2011 2 September 2011 1 August 2011 1 July 2011 3 June 2011 1 March 2011 2 February 2011 5 January 2011 2 December 2010 3 November 2010 2 October 2010 1 September 2010 1 July 2010 2 June 2010 2 May 2010 4 March 2010 2 February 2010 2 January 2010 2 December 2009 6 November 2009 1 October 2009

    Original URL path: http://blog.spitzenpfeil.org/wordpress/tag/router/ (2016-02-10)
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