I've been given a HUAWEI Mobile Broadband E173 USB 3g model. The USB modem contains a flash USB Storage segment storing a little install program dedicated to make the modem work fine on Microsoft Windows XP / Vista / 7 and probably other M$ OSes. I'm a long time DebianGNU / Linux user and as a free software enthusiast I ofcourse wanted to be able to use Vivacom's 3G USB Modem on my Linux powered notebook.
Thanksfully as I've red on Vivacom's website the modem supports Linux OS
For those unaware in Bulgaria there are currently 3 major GSM network providers providing 3G internet this are;;;
VIVACOM – The ex Government ran national company BTC (Bulgarian Telecommunication Company)
M-Tel – The first GSM network provider that entered Bulgaria around year 1995
GLOBUL – The 3rd and last GSM mobile and net provider entered last and not so much used by Bulgarians today
Until today I had no experience in running any 3G modems on Linux, neither I had used the 3 networks 3G internet to determine which one is best, however I've been given for temporal use a VIVACOM 3G internet modem today so I proceeded to try installing it on my Debian host.
My Linux system is a bit strangely configured as I use wicd network connection manager -( wicd-gtk ) to manage wireless and LAN connections instead of the standard installed GNOME network manager – available through package ( network-manager-gnome ).
The reason I use wicd is not that it is so much better than GNOME network manger but rather for historical reasons because few years past I had impression it works better in connecting me to wireless networks. Another reason why I choosed wicd back then was the nice looking stats …
I tried plugging in the Vivacom USB 3G modem stick and checked in wicd to see if I can see a possibility to connect to the mobile opeartor 3G network but unfortunately nothing appeared.
Though the 3G adsl modem was unavailable straing in wicd, checking about it in the list of attached USB devices I could see it detected, e.g.:
noah:~# lsusb |grep -i huawei
Bus 001 Device 007: ID 12d1:1c05 Huawei Technologies Co., Ltd.
This was at least a good sign pointing me to the thoughts that the modem is probably gonna work.
I did a quick Google search to see if other people succeded running the device on a Linux host and came across a few blog posts in Bulgarian explaining a "success story" on Ubuntu Linux through using a tweakened shell script – sakis3g. For more on how the script works and script download check out Sakis3g
Here is a quote from sakis3g's website describing the script:
It automagically setups your USB or Bluetooth™ modem, and may even detect operator settings.
You should try it when anything else fails!
Sakis3g has different versions designed for for plenty of spacific hware architectures i.e. for (i386, amd64, armv4t, armv5t).
There is also a version of the script which by the way contains a combination of bash shell scripting instruction and some binary exec data.
To run sakis3g on my laptop I did:
1. Download sakis3g
My notebook architecture is 64 bit so I download and used the amd64 version of the script;;;
hipo@noah:~$ mkdir sakis3g
hipo@noah:~$ cd sakis3g
hipo@noah:~/sakis3g$ wget http://www.sakis3g.org/versions/latest/amd64/sakis3g.gz
I've made also a mirror of sakis3g i386, 64 bit and all architecture the mirrors just in case it disappears in future. The mirror versions of sakis3g are here:
The script is then ready to run by either clicking twice on it or (as I prefer for debugging reasons to run it in terminal):
hipo@noah:~$ ./sakis3g
Something that I have wondered a bit was the dialog where I had to fill in some data of some variable APN abbreviation for – (Access Point Name)
The APN host for VIVACOM mobile internet is;;; APN: internet.vivacom.bg
I've used the Windows configuration progrma to gather also the following data that I thought might be important for configuring the 3G adsl modem on the Linux host;;;
Auth: *99#
User: VIVACOM
pass: VIVACOM
Here are all the configuration screenshots I've taken from sakis3g and all the data that I filled in.
Next the following tiny window appeared on screen:
Well that's all folks, now sakis3g succesfully connected to the I_net via an (PPP) VPN connection tunnel here is data from ifconfig command showing the succesful 3G connection to VIVACOM;;;
The internet via the 3G connection is not blazing fast but good enough to check your mail or read some webpages. VIVACOM currently has different (traffic limited packages) for their 3G internet, I'm not sure which package exactly is the 3G USB stick modem but probably the "quick" internet connection that is now would slow down once the traffic limit is reached …
Hope this post helps someone to configure 3G internet on VIVACOM in Debian and Ubuntu Linux. Though I've tested sakis3g on Debian it should work with no hassles on any other GNU Linux distribution that has bash installed.
We all live in an age, where cell-phone communication has become a standard part of our daily lives. As with everything new adopted in basic human life. GSM tool inclusion in our life had a severe impact on both individuals and in summary to whole society groups and nations.
The benefits out of having an instant “channel” for communication to anyone else in the world are indoubtfully numerous. However as present tosicety is learned to mostly thing in one direction, most people didn’t have a clear understanding on the negative impact of this little communicators on our mind body and soul.
1.; Negative impact of mobile phones on body level
Whenever we talk over the phone especially when picking up incoming calls or initiating out-going ones, the GSM device has to connect to the closest network cell “dial up” and wait for initialization of remote or local connection. The levels of radiation waves during the two mobiles connects up is higher. Therefore if one moves the phone near his ear listening for the status of call the amount of radiation that enters our brains is slightly higher. The extra-radiation whether mobiles are connecting is also few times more whether our phone is ringning, hence it is unhealthy to put the phone near our ear before we press the Answer Call button.
2.;; Negative effect of continuous mobile phones use on human brain
Knowing about the increased radiation on connection initialization thanksfully one can protect himself by simply not putting the mobile headset near ear on call initialization. Though this “problem” can be partially solved, next comes the health brain damage (tumours) which according to some researches are higher among people who do frequentlong phone call conversations. In long phone calls the brain is exposed for a longer time to the flowing waves making the peer to peer call possible. According to some medical researches, a long and frequent phone calls could be a reason not only for brain cancers but also other misfunctions or damages in normal brain cells functioning.
3.;;; The bad impact of Cell Phones on nervous system
Another health issue which the daily phone use and the constant exposure to mobile network cells radio frequency radiation affects generally our nervous system.
Unexpected phone calls early in morning or late at night are a cause for increased bodily stress and even the fear sometimes for an incoming phone call are a cause for many types of neurological disorders diagnosed by psychiatrists. Even when we sleep at night the mobile phone periodically connects to the nearest mobile cell generating some almost undetectable “waves contamination”. This constant waves air flow caused by the mobile network cells positioned all around cities is not usual thing for our bodies. This also has some influence on our nervous system as the nervous sysm tends to be a bit more alert because of the waves constantly passing the body. The natural reaction of our bodies nerves is to try to balance itself. As nervous system of different people is not equal some people’s nervous system is more prone to having difficulties to balance the disbalance created by the increased number of mobile air waves. The result of this to many people is in increased sleeplessnes and hardships to get asleep (according to research taken place in American Academy of Sleep Medicine.).
4.;;;; Lost of social and ethical behaviour in people
There is lately observed a huge shift from a face to face communication to peer to peer (p2p) on the phone. The cellphones breeds a culture of socially group detached people (the communication over phone is rarely a conference) but rather consists of communication between two persons (peer to peer). The p2p communication is not only a primary mean of communication of people exposed to heavy phone use. p2p Communication is a primary communication in Skype, Google Talk and mostly all modern available communication medias and softwares.
As more and more people spend nowdays more time on the mobile than in real communication, this makes them introverted and isolated and increases the inability to deal with real human f2f interaction. In other words continuous phone use re-trains us to communicate with others via the mobile. Besides that according to numerous researches about 40 to 50% of visual communication whether a phone call is used is lost (this also makes negotiation or expressing over phone harder and at least twice longer than in real communication).
The influence of the decreased social abilities cause of the phone use has also an impact on ethical behaviour of people too. The increased lost of communication abilities makes even daily real communication vague and lacking accepted social norms and ethical values. Next to that comes the huge problem of over-simplification of communication. As the line communication over the phone loose half of the communication as well as sometimes there are quality of voice over the network interferences. People are doing their best to simplify the communication adopting short command like like phrases and talking in a slang.
5.;;;;; Addiction to mobile phone use
The use of mobile phone often has a short beep sounds, whether you work on the keyboard receive a phone call or look for some mobile functionality staring at the screen. We’re wearing the mobile everywhere with us so often we do check the mobile screen quite un-consciously (by addiction). Checking the mobile screen to see what time is it has become almost an instinct and an automated learned behaviour.
The continous use of mobile phones makes many people mobile addicts. There are huge amount of people I’ve observed who speaks everyday for few hours (whether everytime they feel lonely they call someone in order not to feel lonely). The mobile phone addiction in youngsters is slighly higher than in adults. Probably the most mobile dependent addicts are kids who were given a mobile to use since there very early years. Anyways there are tons of adults nowdays who cannot even think to be able to live without mobile and even cannot understand: how can anyone think that life could be possible without a cell phone. This kind of thinking is a direct trait showing an addiction and dependency on the phone such people have.
Those who are in familiar with older UNIXes, UNIX BSD derivatives and GNU Linux should certainly remember the times, when we hackers used to talk to each other using talk service.
Those who don't know what talk command is it is a simple console / ssh utility to talk to another logged in users.
Talk is very similar to write and mesg one liner messasing utilities available for *nixes, the difference is it is intendted to provide interactive chat between the two logged in users. People who came to know UNIX or free software in older times most likely don't know talk, however I still remember how precious this tool was for communication back in the day.
I believe still it can be useful so I dediced to install ot on one FreeBSD host.
In order to have the talk service running on BSD it is necessery to have /usr/libexec/ntalkd installed on the system this however is installed by default with standard BSD OS installs, so no need for any external ports install to run it.
talk doesn't have it's own init script to start is not written to run as it own service but in order to run it is is necessery to enable it via inetd
My home run machine MySQL server was suddenly down as I tried to check my blog and other sites today, the error I saw while trying to open, this blog as well as other hosted sites using the MySQL was:
Error establishing a database connection
The topology, where this error occured is simple, I have two hosts:
1. Apache version 2.0.64 compiled support externally PHP scripts interpretation via libphp – the host runs on (FreeBSD)
2. A Debian GNU / Linux squeeze running MySQL server version 5.1.61
The Apache host is assigned a local IP address 192.168.0.1 and the SQL server is running on a host with IP 192.168.0.2
To diagnose the error I've logged in to 192.168.0.2 and weirdly the mysql-server was appearing to run just fine:
debian:~# ps ax |grep -i mysql
31781 pts/0 S 0:00 /bin/sh /usr/bin/mysqld_safe
31940 pts/0 Sl 12:08 /usr/sbin/mysqld –basedir=/usr –datadir=/var/lib/mysql –user=mysql –pid-file=/var/run/mysqld/mysqld.pid –socket=/var/run/mysqld/mysqld.sock –port=3306
31941 pts/0 S 0:00 logger -t mysqld -p daemon.error
32292 pts/0 S+ 0:00 grep -i mysql
Moreover I could connect to the localhost SQL server with mysql -u root -p and it seemed to run fine. The error Error establishing a database connection meant that either something is messed up with the database or 192.168.0.2 Mysql port 3306 is not properly accessible.
My first guess was something is wrong due to some firewall rules, so I tried to connect from 192.168.0.1 to 192.168.0.2 with telnet:
freebsd# telnet 192.168.0.2 3306
Trying 192.168.0.2…
Connected to jericho.
Escape character is '^]'.
Host 'webserver' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
Connection closed by foreign host.
Right after the telnet was initiated as I show in the above output the connection was immediately closed with the error:
Host 'webserver' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'Connection closed by foreign host.
In the error 'webserver' is my Apache machine set hostname. The error clearly states the problems with the 'webserver' apache host unable to connect to the SQL database are due to 'many connection errors' and a fix i suggested with mysqladmin flush-hosts
To temporary solve the error and restore my normal connectivity between the Apache and the SQL servers I logged I had to issue on the SQL host:
mysqladmin -u root -p flush-hostsEnter password:
Thogh this temporar fix restored accessibility to the databases and hence the websites errors were resolved, this doesn't guarantee that in the future I wouldn't end up in the same situation and therefore I looked for a permanent fix to the issues once and for all.
The permanent fix consists in changing the default value set for max_connect_error in /etc/mysql/my.cnf, which by default is not too high. Therefore to raise up the variable value, added in my.cnf in conf section [mysqld]:
debian:~# vim /etc/mysql/my.cnf
...
max_connect_errors=4294967295
and afterwards restarted MYSQL:
debian:~# /etc/init.d/mysql restart
Stopping MySQL database server: mysqld.
Starting MySQL database server: mysqld.
Checking for corrupt, not cleanly closed and upgrade needing tables..
To make sure the assigned max_connect_errors=4294967295 is never reached due to Apache to SQL connection errors, I've also added as a cronjob.
In the cron I have omitted the mysqladmin -u root -p (user/pass) input options because for convenience I have already stored the mysql root password in /root/.my.cnf
Probably, many don't know that it is possible to view normal graphical pictures (JPG, PNG, GIF, BMP) etc. in plain console tty.
Being able to view pictures in ASCII is something really nice especially for console geeks like me.
The images produced sometimes are a bit unreadable, if compared to the original graphics, but anyways most of the pictures looks pretty decent
Viewing in console / terminal images on GNU / Linux is possible thanks to a library called libcaca, caca labs libcaca project official website here.
Below is a shot description of libcaca: hipo@noah:~$ apt-cache show libcaca0|grep 'Description' -A 4
Description: colour ASCII art library
libcaca is the Colour AsCii Art library. It provides high level functions
for colour text drawing, simple primitives for line, polygon and ellipse
drawing, as well as powerful image to text conversion routines.
In Debian, Ubuntu and other deb Linux distros viewing GUI images with no need for Xserver or any kind of window manager in plain ASCII is possible with cacaview.
cacaview is part of a package called caca-utils. caca-utils is providing few other great utilities for ASCII freaks along with cacaview console ascii viewer prog.
The package> is available for Debian distributins since many years, so even on a very old Debians like Debian – (Potato, Woody, Sarge) the package is available in default free package repositories ready to install via apt
To install apt-get it as usual:
noah:~# apt-get --yes install caca-utils
Here is a list of the binaries the package provides:
1. cacaserver a tiny program allowing network streaming of applications written in caca
Belkow is a chop, from man cacaserver
cacaserver reads libcaca animation files in its standard input and
serves them as ANSI art on network port 51914. These animations can be
created by any libcaca program by setting the CACA_DRIVER environment
variable to raw and piping the program's standard output to cacaserver.
Clients can then connect to port 51914 using telnet or netcat to see
the output.
The example section of the manual points 1 example use of cacaserver to stream the console output from cacademo. cacademo binary is a short presentation ASCII DEMO in the spirit of the old school assembly demos (demoscene) .
To run it to bind on port 51914 one has to type in bash shell: hipo@noah:~$ CACA_DRIVER=raw cacademo | cacaserver
initialised network, listening on port 51914
Then to check out how the demo looks, open telnet connection to the cacaserver host; In my case the cacaserver is binded and streamed over IP 192.168.0.2:
hipo@debian:~$ telnet 192.168.0.2 51914
Immediately you got the demo shining; Below are two screenshots of the demo played after succesful telnet connection:
cacademo running over telnet network connection – Matrix
Blur spots cacademo shot of cacademo streamed via network
You see the demo looks quite awesome
2. Running cacafire to stream over network
Another possible example use of cacaserver is in conjunction with cacafire libcaca test application:
noah:~# CACA_DRIVER=raw cacafire | cacaserver
initialised network, listening on port 51914 cacafire is a short application written to render ASCII via libcaca and is just displaying a screen with ASCII (moving) burning fire.
It is quite spectacular if you, ask an unexpecting friend to connect to your host to 51914
Besides that bored sys admins, could run cacafire in console to hypnotize themselves watching dumb the burning fire screen for few hoursor just use it as a screensaver
3. cacaview a program to display a graphic images in console using ASCII art
cacaview takes just one argument – the picture to be displayed.
Below is a screenshot of cacaview ran from my gnome-terminaldisplaying a ASCII text version of the MySQL server logo
hipo@noah:~$ cd /disk/pictures
hipo@noah:/disk/pictures$ cacaview mysql_logo.png
Whether cacaview is invoked in GUI, the libcaca X support is used, so the text image is visualized in new window with graphics, if however it is invoked in plain let's say tty1 libcaca displays the graphics pictures drawing it with only text characters.
Here is also a screenshot, I've made while viewing a GIF website logo in ASCII in plain tty console:
hipo@noah:~$ cacaview /disk/pictures/logo.gif
The logo is in cyrillic, so for latin speaking people some of the characters in the two words seen will be unreadable
cacaview even supports viewing, the next and previous picture in line, like in any modern graphics image viewer program.
To view a bunch of graphic pictures in ASCII with cacaview pass it *.*:
hipo@noah:~$ cacaview /disk/pictures/*.*
For simplicity the common unix * is also supported, so I find it quicker to do:
hipo@noah:~$ cacaview /disk/pictures/*
Showing pictures forward and backward (Previous / Next) picture is done with n and p kbd keys, whether; n - next;
p - previous
cacaview doesn't crash or stop but skip unknown file formats – if for instance encounters filenames which are not images; lets say you have *.rar archive files along with other pictures.
The complete list of keys cacaview supports are:
br />
KEYS
? show the help screen
n, p switch to next image, previous image
Left, Right, Up, Down or h, l, k, j
scroll the image around
+, – zoom in and out
z reset the zoom level to normal
f switch fullscreen mode (hide/show menu and status bars)
d toggle the dithering mode (no dithering, 4×4 ordered dithering, 8×8 ordered dithering and random dithering)
q exit the program
4. Converting graphics images to ASCII art like (plain text pictures)
The tool that does "the trick" is img2txt. img2txt has a bit more options while compared to the rest of the aforementioned tools.The following list of arguments are recognized:
the size (font, height)
brightness
contrast
gamma and dither
format type of out the output pic
Anyways I found that the basic just in / out arguments passed are enough to produce pretty good results:
After above img2txt command is run and hipo_avatar_pic.txt to see the colorful output ASCII art img2txt produces, cat it:
hipo@noah:~$ cat hipo_avatar_pic.txt
The image result if screenshot looks quite beautiful and even, can be considered or used as an ART effect image (filter)
The picture colors are plain ANSI color, so in order to display properly the picture with colors on another computers or Operating System you will need at least basic support for ANSI colors.
Plenty of output file formats are supported by img2txt
Here is the complete list of supported output formats:
ansi : coloured ANSI
caca : internal libcaca format
utf8 : UTF8 with CR
utf8 : UTF8 with CRLF (MS Windows)
html : HTML with CSS and DIV support
html3 : Pure HTML3 with tables
irc : IRC with ctrl-k codes
bbfr : BBCode (French)
ps : Postscript
svg : Scalable Vector Graphics
tga : Targa Image
libcaca is available for FreeBSD too, but the caca-utils is not available as a port yet, though probably the deb or rpm packages can easily be ported to BSD.
After migrating databases data from FreeBSD MySQL 5.0.83 server to a Debian Squeeze Linux MySQL version 5.1.61, below is a mysql –version issued on both the FreeBSD and the Debian servers
freebsd# mysql --version
mysql Ver 14.12 Distrib 5.0.83, for portbld-freebsd7.2 (i386) using 5.2
debian:~# mysql --version
mysql Ver 14.14 Distrib 5.1.61, for debian-linux-gnu (i486) using readline 6.1
The data SQL dump from the FreeBSD server was dumped with following command arguments:
Then I used sftp to transfer complete_db_dump.sql dump to the a brand new installed latest Debian Squeeze 6.0.2. The Debian server was installed using a "clean Debian install" without graphical environment with CD downloaded from debian.org's site.
On the Debian machine I imported the dump with command:
debian:~# mysq -u root -p < complete_db_dump.sql
Right After the dump was imported I re-started SQL server which was previously installed with:
debian:~# apt-get install mysql-server The error I got after restarting the mysql server:
debian:~# #/etc/init.d/mysql restart
was:
ERROR 1577 (HY000) at line 1: Cannot proceed because system tables used by Event Scheduler were found damaged at server start
ERROR 1547 (HY000) at line 1: Column count of mysql.proc is wrong. Expected 20, found 16. The table is probably corrupted
This error cost me a lot of nerves and searching in google to solve. It took me like half an hour of serious googling ,until I finally found the FIX!!!:
debian:~# mysql_upgrade -u root -h localhost -p --verbose --force
Enter password:
Looking for 'mysql' as: mysql
Looking for 'mysqlcheck' as: mysqlcheck
Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/run/mysqld/mysqld.sock' '--host=localhost'
Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/run/mysqld/mysqld.sock' '--host=localhost'
bible.holy_bible OK
bible.holybible OK
bible.quotes_meta OK
Afterwards finally I had to restart the mysql server once again in order to finally get rid of the shitty:
ERROR 1547 (HY000) at line 1: Column count of mysql.proc is wrong. Expected 20, found 16. The table is probably corrupted error!
debian:~# /etc/init.d/mysql restart
Stopping MySQL database server: mysqld.
Starting MySQL database server: mysqld.
Checking for corrupt, not cleanly closed and upgrade needing tables..
This solved the insane Column count of mysql.proc is wrong. Expected 20, found 16 once and for all!
Before I came with this fix I tried all kind of forum suggested fixes like:
debian:~# mysql_upgrade -u root -p
Looking for 'mysql' as: mysql
Looking for 'mysqlcheck' as: mysqlcheck
This installation of MySQL is already upgraded to 5.1.61, use --force if you still need to run mysql_upgrade
debian:~# mysql_upgrade -p
Looking for 'mysql' as: mysql
Looking for 'mysqlcheck' as: mysqlcheck
This installation of MySQL is already upgraded to 5.1.61, use --force if you still need to run mysql_upgrade
And few more, none of them worked the only one that worked was:
It seems, since Oracle bought the Community edition of MySQL thinks with this database server are getting more and more messy and backwards incompatible day by day.
Lately, I'm experiencing too much hassles with MySQL version incompitabilities. Maybe I should think for migrating permanently to Postgre …
By the way the ERROR 1547 (HY000) at line 1: Column count of mysql.proc is wrong. is most probably caused of some kind of password hashing incompitability between the password hashing between the BSD and Debian SQL versions, as mysql -u root -p < dump.sql, does override default stored user passwords in the mysql database tables… Such password, hashing issues were common in prior MySQL 4 to MySQL 5 migrations I've done, however since MySQL 5+ is already storing its password strings encrypted with md5 encryption I wonder why on earth this mess happens ….
I never liked Mandrake Linux, since day 1 I saw it.
Historically Mandrake Linux was one of the best Linux distributions available for free download in the "Linux scene" some 10 to 12 years ago.
Mandrake was simple gui oriented and trendy. It also one the Linux distribution with the most simplified installer program and generally a lot of GUI software for easy configuration and use by the end user.
Though it's outside nice look, still for me it was like an "intuition" that Mandrake is not so good as it appeared.
Now many years later I found by chance that Mandrake has been sued to change their Operating System name with another, due to a law suit requit by the copyright holders of Mandrake The Magician comics. "Mandrake the Magician" used to be a very popular before the Second World war in the 1930's.
It obviously not a co-incidence that the Mandrake names was after this comics and not the mandrake herb plants available in Europe, Africa and Asia. This is clear in Mandrake Linux distro earlier mascot, you see below:
Later on they changed Mandrake's logo to loose the connection with Mandrake The Magician and used another new crafted logo:
Its quite stunning nowdays magician obsession, has so heavily infiltrated our lives that even something like a Free Softwre Linux distribution might have some kind of reference to magician and occult stuff (I saw this from the position of being Christian) …
Later due to the name copyright infringement Mandrake Linux was renamed first to Mandragora Linux.
Instead of putting some nice name non related to occultism or magic stuff the French commercian company behind Mandrake rename it to another non-Christian name Mandragora.
Interestingly the newer name Mandragora as one can read in wikipedia means:
Mandragora (demon), in occultism
Well apparently, someone from the head developers of this Linux distribution has a severe obsession with magic and occultism.
Later MandrakeSoft (The French Company behind Mandrake Linux) renamed finally the distribution to Mandriva under the influence of the merger of Mandrake with the Brazillian company Connectiva this put also an over to the legal dispute copyright infringement dispute with Hearst Corporation (owning the rights of Mandrake the Magician).
Having in mind all fact on current Mandriva "dark names history", I think it is better we Christians avoid it …
Before I explain how netstat and whois commands can be used to check information about a remote skype user - e.g. (skype msg is send or receved) in Skype. I will say in a a few words ( abstract level ), how skype P2P protocol is designed.
Many hard core hackers, certainly know how skype operates, so if this is the case just skip the boring few lines of explanation on how skype proto works.
In short skype transfers its message data as most people know in Peer-to-Peer "mode" (P2P) - p2p is unique with this that it doesn't require a a server to transfer data from one peer to another. Most classical use of p2p networks in the free software realm are the bittorrents.
Skype way of connecting to peer client to other peer client is done via a so called "transport points". To make a P-to-P connection skype wents through a number of middle point destinations. This transport points (peers) are actually other users logged in Skype and the data between point A and point B is transferred via this other logged users in encrypted form. If a skype messages has to be transferred from Peer A (point A) to Peer B (Point B) or (the other way around), the data flows in a way similar to:
A -> D -> F -> B
or
B -> F -> D -> A
(where D and F are simply other people running skype on their PCs).
The communication from a person A to person B chat in Skype hence, always passes by at least few other IP addresses which are owned by some skype users who happen to be located in the middle geographically between the real geographic location of A (the skype peer sender) and B (The skype peer receiver)..
The exact way skypes communicate is way more complex, this basics however should be enough to grasp the basic skype proto concept for most ppl …
In order to find the IP address to a certain skype contact – one needs to check all ESTABLISHED connections of type skype protocol with netsat within the kernel network stack (connection) queue.
netstat displays few IPs, when skype proto established connections are grepped:
Now, as few IPs are displayed, one needs to find out which exactly from the list of the ESTABLISHED IPs is the the Skype Contact from whom are received or to whom are sent the messages in question.
The blue colored IP address:port is the local IP address of my host running the Skype client. The red one is the IP address of the remote skype host (Skype Name) to which messages are transferred (in the the exact time the netstat command was ran.
The easiest way to find exactly which, from all the listed IP is the IP address of the remote person is to send multiple messages in a low time interval (let's say 10 secs / 10 messages to the remote Skype contact).
It is a hard task to write 10 msgs for 10 seconds and run 10 times a netstat in separate terminal (simultaneously). Therefore it is a good practice instead of trying your reflex, to run a tiny loop to delay 1 sec its execution and run the prior netstat cmd.
To do so open a new terminal window and type:
noah:~# for i in $(seq 1 10); do \
sleep 1; echo '-------'; \
netstat -tupan|grep -i skype | grep -i established| grep -v '0.0.0.0'; \
done
-------
tcp 0 0 192.168.2.134:55119 87.126.71.94:26309 ESTABLISHED 3606/skype
-------
tcp 0 0 192.168.2.134:49096 213.199.179.161:40029 ESTABLISHED 3606/skype
tcp 0 0 192.168.2.134:55119 87.126.71.94:26309 ESTABLISHED 3606/skype
-------
tcp 0 0 192.168.2.134:49096 213.199.179.161:40029 ESTABLISHED 3606/skype
tcp 0 0 192.168.2.134:55119 87.126.71.94:26309 ESTABLISHED 3606/skype
...
You see on the first netstat (sequence) exec, there is only 1 IP address to which a skype connection is established, once I sent some new messages to my remote skype friend, another IP immediatelly appeared. This other IP is actually the IP of the person to whom, I'm sending the "probe" skype messages.
Hence, its most likely the skype chat at hand is with a person who has an IP address of the newly appeared 213.199.179.161
Later to get exact information on who owns 213.199.179.161 and administrative contact info as well as address of the ISP or person owning the IP, do a RIPE whois
noah:~# whois 213.199.179.161
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf
% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.
% Information related to '87.126.0.0 - 87.126.127.255'
inetnum: 87.126.0.0 - 87.126.127.255
netname: BTC-BROADBAND-NET-2
descr: BTC Broadband Service
country: BG
admin-c: LG700-RIPE
tech-c: LG700-RIPE
tech-c: SS4127-RIPE
status: ASSIGNED PA
mnt-by: BT95-ADM
mnt-domains: BT95-ADM
mnt-lower: BT95-ADM
source: RIPE # Filteredperson: Lyubomir Georgiev
.....
Note that this method of finding out the remote Skype Name IP to whom a skype chat is running is not always precise.
If for instance you tend to chat to many people simultaneously in skype, finding the exact IPs of each of the multiple Skype contacts will be a very hard not to say impossible task.
Often also by using netstat to capture a Skype Name you're in chat with, there might be plenty of "false positive" IPs..
For instance, Skype might show a remote Skype contact IP correct but still this might not be the IP from which the remote skype user is chatting, as the remote skype side might not have a unique assigned internet IP address but might use his NET connection over a NAT or DMZ.
The remote skype user might be hard or impossible to track also if skype client is run over skype tor proxy for the sake of anonymity
Though it can't be taken as granted that the IP address obtained would be 100% correct with the netstat + whois method, in most cases it is enough to give (at least approximate) info on a Country and City origin of the person you're skyping with.
Some long time ago a bit before I repent and believed in Jesus Christ as my Lord and Saviour, I've done quite an extensive research on the trustability of the Holy Bible and mostly the Church and Christian writtings. In that times, as an ex-metal head I had a profound interest if there is really a connection between Modern Hard Rock and Heavy Metal Music?
My research back then was quite thoroughful and I found plenty of proofs clearly showing a clear connection between most of the hard rock and heavy / death metal bands to satanism. I used to listen this anti-christian music for about 8 years repeatedly believing the message is not really bad, even though subconsciously I knew something is not right with the music.
It was quite shocking to me to find that one of my favourite hard rock / psychedelic bandsLed Zeppelin, The Beatles, The Doors, Rolling Stones etc. e, had a clear connection with Alester Crawley (a new age occultist magician and a forefather of modern satanism …).
Crawley was a completely insane person proclaiming himself under the alias "The Beast". This psycho travelled all around America, cursing people and cities and teaching people to worship evil. In other words the guy was a complete modern day anti-christ. I found in youtube few short 20 minute, movies exposing the relation between the new age ecumenistic beliefs and Crawley. Along with the musicians spoken about and their exposure to be a bible and God deniers, the movie explains why the message of this popular figures is anti-Christian in essence. This short few movies explains how this terrible guy Crawley become an inspirator of many of the today world popular played rock bands in most of the radio stations …
Satanism – The Root of Rock Music (part 1)
Satanism – The Root of Rock Music (part 2)
Another interesting documentary exposing some of the major pop and rock culture and musicians connection with satanism and the occult is They Sold Their Souls to the devil. The movie is again a short research on popular musicians, who openly say in their interviews they sold their souls for fame to the devil. . Many of the star musicians featured in this videos, even say openly they're possessed by evil spirits.
They Sold Their Souls to the devil part 1 of 3
They Sold Their Souls to the devil part 2 of 3
They Sold Their Souls to the devil part 3 of 3
They Sold Thir Souls to the devil part 4 of 4
Some people might think this is a joke non-serious, some crazy christian propaganda, but if you watch it without bias and analyze it nomatter if Christian or atheist you will see most of the things said in the video reflect the reality. Actually it's very sad reality, today's world has rapidly headed towards non-christianity, occult and satanism. Believe it or not, the elite in the world, we see daily on TV or hear on the Radio and read for as heroes in the newspapers has a strong connection with magicians, occult and fake spirituality. Many of them think loving evil is fun and okay but in fact it is a big lie we're said. As I've red someone says, once a lie is repeated many times it appears to sound like truth….
Anyways we should know Evil is evil and no good can come of worshipping the evil our ancestors and forefathers knew that pretty well and they used to teach us in a spirit to obey good and walk after good and not evil. Modern pop-rock culture teach us something else it teach us to go after the ways of dis-obeying satan took … Pitily our dying generation forgot that evil seeking will bring just evil and now systematically many governments and medias are working seriously for destroying the Christian moral and pureness hence by that we seek to destroy ourselves hurrying towards our own destruction….
Lets hope God will be merceful and turn more people to him and unveil them the truth we read in the Holy Bible. I have hope more and more people will realize that we have to be living in a moderate and saintly way and not like the rock and pop stars shown in those videos. We should pray for each other and love each other and keep an eye on our children to let them not go the bad ways of witchcraft, unholiness and sinfulness the modern pop – rock culture push us to.
In our TeamViewer download area you will now find TeamViewer 7 for Linux.
The final version includes a selection of new features for Linux, e. g. an integrated screenshot feature and the possibility of saving individual connection settings per computer.
You can now establish cross platform connections with other computers running version 7 and hold online meetings and presentations with up to 25 participants.
We wish you best continued success with TeamViewer!
Well, guys it was about time, even later than that… Until now I've so many times experienced troubles with Windows machines which I had to administrate remotely and they only had a TeamViewer 7 installed (a real, real pain in the ass).
The issue comes cause TeamViewer 6 is incompatible with 7 and just until very recently only TV 6 for Linux was available, so trying to access a 7 install directly from Linux was impossible.
Hence to access TeamViewer 7 Windows install, I had to use either a fresh Windows copy with TeamViewer 7 installed or a Virtual Machine like (Qemu, VirtualBox) with Windows version installed in it.
Often back then, when I had to fix remotely a Windows machine behind a firewall, I had to instruct the machine owners to replace the TeamViewer 7 with TeamViewer 6 in order to be able to easily access the remote host from my Debian Linux.
I still remember, it was quite a stuggle to find a link to a Windows .exe install file for TeamViewer 6.
One example, where old teamviewer release is useful is if you want to run teamviewer on older hardware or old OS (MS Windows 98 or old Linux distro).
I've made a mirror of teamviewer 6 for Debian / Ubuntu amd 32 and 64 bit versions along with all the OS available TeamViewer version 6 and 7, for the sake of preserving it if one day link to old versions of Teamviewer disappear from their website.
Below you see a screenshot of teamviewer 7 running on my Debian Squeeze
It is great teamviewer produced a Linux working application, however if you run it you realize just like the previous releases TeamViewer is not natively supposed (compiled) to run on GNU / Linux OS but uses wine (windows emulator) to launch through…
Instead of porting the application to be natively for the Linux distros once again with this new release, teamviewer developers just "hacked" it to run on top of windows emulation. Though this is working its performance, is probably a bit degraded and it depends on having install on the Linux host a bunch of useless packages which wine depends on.
Besides that even if it "works" on Linux , TeamViewer has still non-free software essense. I still use it because unfortunately, I don't know of a better remote access program capable to connect to servers behind NAT / machines located behind a tight firewalled routers.
If only (I knew of?) a TeamViewer free software / open source equivalent …
I will be glad to hear if someone know a (free software / open source) TeamViewer like program able to access remote hosts with no a real (public inet) IP address?P.S.: By similar TV program I don't mean VNC, UltraVNC and this kind of other VNC derivative programs but mean close TeamViewer alternative.
Bio: I am a Free Software enthusiast, hobbyist and a unix geek. Presently my competences are into the field of System administration.
I am also a devoted Orthodox Christian. I have deep interests into
religion in general and in Christianity in particular.
I am a big fan of all kind of Unix like systems like: GNU/Linux, FreeBSD, DOS and other various obscure computing. I'm also interested into philosophy and business administration.
My hobbies include playing old arcade games, trips to a new places,
preferably nature filled places, Mountain, Waterfalls, Woods etc.
In my free time I also like watching movies: Mostly spiritual movies, or movies with a deeper meaning.Currently I am a student in Arnhem Business School in the stream of HRQM (Human Resources and Quality Management).
Herein my blog you'll find mostly stuff about my unix/linux adventures, personal life, thoughts on life, religion, philosophy and art.
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