Posts Tagged ‘drago’

How to connect to WiFi network using console or terminal on GNU / Linux

Wednesday, November 2nd, 2011

Reading Time: 3minutes


Sometimes its useful to connect to Wireless Networks using console . The reasons for that might be many, one possible reason is to be able to debug, Wireless connection failures or simply omit the use of the many available GUI wifi connection programs.

As a first step before connecting in terminal is to look up for the wifi networks available for connection, this is done with cmd:

linux:~# iwlist wlan0 scanning
wlan0 Scan completed :
Cell 01 - Address: 00:24:01:90:8F:38
Frequency:2.442 GHz (Channel 7)
Quality=70/70 Signal level=-39 dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Extra: Last beacon: 68ms ago
IE: Unknown: 00086D616764616E6F7A
IE: Unknown: 010482848B96
IE: Unknown: 030107
IE: Unknown: 32080C1218602430486C
IE: Unknown: CC0700CC020000018A
IE: Unknown: CC0700CC0300000100
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
Cell 02 - Address: 00:1E:2A:60:5E:DC

To just list the ESSID s of the wifi networks:

linux:~# iwlist wlan0 scanning|grep -i 'essid'

1. Connecting to Open Wireless Network

Now from the above output it is clear 6 wifi networks are available for connection. The default wifi network from the list is an Open network (e.g. without pass). To connect to it I use cmd:

linux:~# /sbin/iwconfig wlan0 essid 'default'
linux:~# /sbin/iwconfig wlan0 key open

After connected to configure IP, Gateway and DNS from a DHCP server running on the WIFI router, dhclient cmd is used:

linux:~# /sbin/dhclient wlan0

2. Connecting to WEP 64bit / 128bit encrypted network

linux:~# /sbin/iwconfig wlan0 key 1234-5678-9101-1213

3. Connecting to WPA / WPA2 encrypted wifi network

To connect to WPA or WPA2 encrypted network its necessery to have installed wpasupplicant package. The name of the package might vary in different distributions on Debian and Ubuntu, the name of the package is wpasupplicant, on Fedora, CentOS and RHEL the package that has to be in is wpa_supplicant :
After having installed the wpa_supplicant to connect to the network with ESSID namemagdanoz , wpa_passphrase is used first:

linux:~# /usr/bin/wpa_passphrase magdanoz Secret_Wifi_Password | tee -a /etc/wpa_supplicant.conf

As you see in above command the secret password key is generated printed on the screen and then added to /etc/wpa_supplicant.conf , necessery to establish the wireless connection with wpa_supplicant with cmd:

linux:~# /sbin/wpa_supplicant wpa_supplicant -d wext -i wlan0 -c /etc/wpa_supplicant.conf -B

-d wext instructs wpa_supplicant to use (Linux wireless extension driver).
-B tells wpa_supplicant to background the connection to prevent the wireless connection to drop off, if the console / terminal from which it is launched gets closed.

In case of succesful connection with wpa_supplicant , once again IP, Gateway and DNS is configured fetching the settings from the wifi hotspot dhcp server:

linux:~# /sbin/dhclient wlan0

General information about the wireless network and info related to the established connection can be obtained with /usr/bin/iwconfig :

linux:~# /sbin/iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11abg ESSID:"magdanoz"
Mode:Managed Frequency:2.442 GHz Access Point: 00:24:00:90:8F:38
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-39 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

To configure the exact channel over which the wireless connection will be established again is done with iwconfig, for instance to configure wlan0 wifi connection established to be on wifi channel 7:

linux:~# /sbin/iwconfig wlan0 channel 11

By default iwconfig is set to automatically set the channel based on connected network ESSID , if the channel is modified to some specific number to revert it back use:

linux:~# /sbin/iwconfig wlan0 channel auto

Why saint George is depicted on icons killing a Dragon (an ancient story of saint George killing the last dragon) – A Collection of 7 icons of Saint Martyr George

Friday, July 6th, 2012

Reading Time: 4minutes

Saint George is one of the most venerated Orthodox Christian saints in the Eastern Orthodox Church. My interest in saint George is cause of the reason, I myself bear the name Georgi (the Bulgarian equivalent of George). Saint George is mostly venerated in the Slavonic Christian-dome.In almost all Church icons depicting st. George in Orthodox and Roman Catholic christiandome saint George is piercing killing a dragon.
One of the reasons, st. George is depicted piercing the dragon is a reference of st. George victory over satan, through his martyrdom.

The Beast (Dragon) on the iconi is a straight reference to the Holy Bible; Chapter Revelation also known under the name Apocalypse.

In revelation, we read humanity and our saviour Jesus Christ will finally once and for all will kill the "ancient beast" = (satan)

In same logic, as Saint Martyr George has been victorious over Satan by his unshakable confession of faith in Jesus Christ in early 5th century A.D. , we believe in the Orthodox Church he is given the crown of (eternal) life as a prize for bearing un-human tortures in the name of the of Christ.

To illustrate visually the victory of saint George over Satan through his immesurable faith confession with which he become, there is a an early tradition in iconography in the Church to depict st. George killing a dragon.

The other reason why saint George is depicted to kill a Dragon is due to a Lebanon / Palestinian ancient story saying; There was a huge Dragon living somewhere in nowdays Lebanon / Palestinian lands.
The beast created a huge havoc killing many people and systematically torturing people in the area.

As the Eastern Orthodox Christian tradition continues …. the Dragon is said to have inhabited one of the caves near some village.
Interesting, the story tells these very same dragon was the last Dragon crawling the earth before the final disappearance of dragons.

Many brave local people tried to kill the beast but many died as the beast was unbeatable.
Being unable to beat-up the dragon with a physical (human) force the local population turnted to God for help – saying continously prayers to Saint George to help them defeat their dragon mischief.

Soon after, Saint George appeared on a white horse and pierced the "old dragon / snake". The dragon liberation miracle is said to be evidenced by local people and according to Orthodox monk books is one of the many great miracles occuring in past times.
The report of the miracle has quickly spread around all Lebanon / Palestinian lands and soon, being confirmed as real spread along all Russia as well as the rest of the Slavonic and Orthodox Christian world (Bulgaria, Serbia), Greece, Egypt (Alexandria) etc..
To illustrate saint George's appearance miracle, monastic iconographers started depicting saint George as we see him until this very day – Riding a horse and slaughtering a monstrous beast.

Below are seven 12-th century earlyicons of saint Saint Great-Martyr George killing the dragon;;
I've collected the icons from various website online. Hope this collection will be blessing for all Christ brother and sisters and generally anyone reading this post:

12-th century mosaic icon of st. George the Great Martyr Xenophontos Monastery

12-th century mosaic icon of st. George the Great Martyr Xenophontos Monastery

Orthodox Christian icon saint George dated to 1130 - 1150 A.D.

Orthodox Christian icon saint George dated to 1130 – 1150 A.D.

Saint Georgius the Dragon Slayer icon XII century orth icon

Saint Georgius the Dragon Slayer icon XII century orth icon

St. George Enamel icon Georgia 12th century

St. George Enamel icon Georgia 12th century

saint George Christian icon Yuriev Monastery Novgorod 12th century

saint George Christian icon Yuriev Monastery Novgorod 12th century

st. George Staraya Ladoga Orthodox Christian icon

st. George Staraya Ladoga Orthodox Christian icon

sv. Georgius 12th century Aios

sv. Georgius 12th century Aios

Nowdays saint George Holy Relics particles are kept for veneration in many Orthodox Christian countries monasteries. Here in Bulgaria saint George Holy Relics are kept in a Monastery nearby the seacoast in Pomorie. Any Christian visiting Bulgaria have the opportunity to venerate the Holy in (Pomorie's Monastery – St. Great Martyr Georgi.

Thanks to God I’m in Arnhem the Netherlands! :)

Tuesday, August 26th, 2008

Reading Time: 2minutes
I had 3 days trip with bus with my girl classmate (Ina). We traveled using the union-ivkoni bus lines. As a wholebeing on the road with bus for 3 days in order to reach some destination is pretty killing. We started the historicaltravel from Kavarna to Sofia and then at 2 o’clock we catched the bus Sofia -> Utrecht. There was big delays in the Serbianand the Hungarian borders. On all the other boarders we and our luggage weren’t checked. We had a bunch of stops on a oil stations.And I have to note everything in the oil stations in europe is pretty expensive. For example one sanwdich costs somwehere aroundalmost 4EU!. I and Ina came at Utrecht at around 6 o’clock and went to the Utrecht’s train station where we took two tickets to Arnhem.At 7 we were at Arnhem and went to the bus station. Originally we expected that there are gonna be welcoming students there and HAN university buses traveling from there to Vivare and the other accommodation places, unfortunately this was not the case. We were absolutely alone at an unknown country again I prayed to God in Jesus name to help me find a way to fix this mess. I went to search for Mobile SIM card, at the end after 20 minutes of walk I asked a police officer near the train station and he told me about a bookstore where I can find mobile SIM cards. I took two of them one for Ina and one for me. I took the T-Mobile mobile. I heard that the prices of conversations between the Bulgarian GSM operator Globul and T-Mobile are cheaper so I decided to give it a try. We called Koko (A College Colleague, who is gonna study HRQM just like me and is going to continue as a 3rd year student in Arnhem Business School, he came instantly in 20 minutes or so with another Bulgarian guy who already studied a year in Arnhem (Drago). Drago didn’t helped much with the traveling bags. But Kaloyan helped a lot. Today I feel the grace of God so real. I pray that he keep me and guide me in the same way in the future too. Another thing to note is that the living room that Vivare selected for me or should I say God make it be for me is just perfect. It has a toilet (!big plus!, a terrace, аsink, a nice bed, A Buro, a lamp and a chair. The room number is with ID K. 111. I think 111 stays for the Holy Trinity (The Father, The Son and The Holy Spirit) to Whom is and be the Glory the worship and power now and Forever and Ever, Amen!) I forgot to mention that I blocked my mobile telephone while trying to make the T-mobile SIM card work with my Motorola C115, luckily God has thought for this too. It seems Koko has one Mobile apartus he didn’t need right now so he gave it on a good will to me. Again what I can say Our Lord is an awesome God. Now I’m pretty tired and I’m going to bed. I have to mention Arnhem is excitingly charmful city and I really like it, also I’m impressed by the Dutch guys with which I had any work until now.Well for final I can only say: ” I screamed to the Lord and he heard my prayer and delivered me from evil”! Glory to you Lord of Hosts! Amen !END—–