Linux OS

Software Freedom Day in Aklan 2013

Day 1 September 20
I woke up around 9am with extra smile on my face and finally Software Freedom Day will be conducted in Aklan. We arrived in NAIA Terminal 3 around 5:00pm and we were late in boarding =). This is my first time in aklan.

I’ve been reading this book (with coffee) while inside the plane and I realized that life is so awesome. Thinking and focusing with your problem will end your day =(. Start focusing on what you really want in your life, visualized and think something that will make you happy. Do not complain with your problem, start talking to your problem.

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Day 2 September 21
Software Freedom Day Small Medium Enterprise talk started early in the morning. We shared our experiences in open source with Aklan Catholic College, Nomancia Integrated School, STI and Northern Visayas College. Students and professionals has been motivated by the speakers.

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My last word “you may not see what will be your future, but I know for sure that you will become one of the greatest IT practitioner someday”

Next time kaya nyo na gumawa ng sarili nyong software freedom day.

 

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Categories: events, leadership, linux, Linux OS, technical | Tags: , , , , , | Leave a comment

Connected to Nework but no Proxy Authentication

Hello! I would like to share some experience of other people in their Network. If you are the network administrator, I think this must be implemented:

1. Network and Security Policy

2. Network Auditing every month

3. Checking of Policy every quarter

4. Network Report every quarter

5. Content Filtering and Proxy for users (optional). This helps me a lot.

Note: Of you guys out there can add more. It would be great!

The problem starts here!!!

Setup: Linux (Gateway), IP Tables (Firewall), Squid (Proxy), Dansguardian (Content Filtering) and a DHCP.

Senario: Your client/users opened his/her web browser but no Proxy Authentication POPup (client browser is configured to use proxy server). The client/user restart the browser but nothing happened. He/She tried to restart the computer but nothing happened =D. Other System Administrator tried to check if the proxy server is running correctly in the server and double check the firewall. But proxy server and firewall are running correctly, what do you think is the problem?

Gateway IP Address: 192.168.3.250

Netmask: 255.255.255.0

DNS: 192.168.3.250

Here are some basic steps to troubleshoot this problem:

1. Make sure proxy is running correctly.

2. Make sure proxy authentication is enabled in the server.

3. Try to reconnect your LAN Cable or try to release and renew IP Address:

For Windows: ipconfig /release
ipconfig /renew

For Linux: /etc/init.d/network restart
/etc/rc.d/networkmanager restart
/etc/init.d/networking restart

4. Double check network settings of Windows
For Windows:ipcofig /all
IP Address: 192.168.3.125
Netmask: 255.255.255.0
Gateway: 192.168.3.250
DNS Server: 192.168.1.1 (Make sure DNS Server is Correct)

For Linux: ifconfig

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 metric 1
inet 192.168.3.125 netmask 255.255.255.0 broadcast 192.168.3.255
inet6 fe80::21c:bfff:feac:c3f3 prefixlen 64 scopeid 0x20<link>
ether 00:1c:bf:ac:c3:f3 txqueuelen 1000 (Ethernet)
RX packets 890738 bytes 1035419263 (987.4 MiB)
RX errors 0 dropped 18 overruns 0 frame 0
TX packets 948781 bytes 139179037 (132.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Check the gateway route -n 

0.0.0.0           192.168.69.50      0.0.0.0               UG      0      0      0      wlan0
192.168.69.    0 0.0.0.0              255.255.255.0   U         0      0      0      wlan0

Check the DNS cat /etc/resolv.conf

# Generated by NetworkManager
domain sample.com
search sample.com
nameserver 192.168.1.1

5. Tracert

tracert 8.8.8.8

Tracing route to 8.8.8.8 in-addr.arpa [8.8.8.8]
over a maximum of 30 hops:

1	<1ms	<1ms	<1ms	1.1.168.192.in-addr.arpa [192.168.1.1]
2	1.1.168.192.in-addr.arpa [192.168.1.1] reports: Destination host unreachable.

Trace Complete
6. Check Windows Event Logs
" Event Logs from windows indicated that the IP Address lease 192.168.3.64 for the Network
with network address 0xB8A386077582 has been denied by the DHCP Server 192.168.1.1
(The DHCP Server sent a DHCPNACK message)."
7. Windows Lan Manager has !(exclamation point), indication that their are conflict gateway or DNS in Network.

Conclusion: Therefore their are other gateway(router) installed in your network. This gateway broadcast DNS on other workstation. Think what are the events happened before the problem (this is helpful when it comes to troubleshooting). Trace the other gateway(router) and turn it off.

Categories: linux, Linux OS, technical | Tags: , | Leave a comment

Slow Browsing using Dansguardian (content filtering)Slow Browsing using content filtering

If your users (200+ users) experiencing slow internet browsing and you were using dansguardian for content filtering.

This will resolved you problem:

Edit dansguardian configuration.

vi /etc/dansguardian-av/dangusrdian.conf

# sets the maximum number of processes to spawn to handle the incoming
# connections.  Max value usually 250 depending on OS.
# On large sites you might want to try 180.
maxchildren = 500

# On large sites you might want to try 10000.
maxagechildren = 10000

# sets the minimum number of processes to spawn to handle the incoming
connections.
# On large sites you might want to try 32.
minchildren = 32
Hope this help you!
Categories: linux, Linux OS, technical, Uncategorized | Tags: , , , , , | 1 Comment

No Right click and Desktop icon (KahelOS+gnome3)

I had this kind of experience in KahelOS, after kahelos upgrade I noticed that my gnome

has been upgraded to gnome3.0.1.

I found out after I logged in, No icons  and I cannot do a right

click on my desktop. I open my console and tracked my files on my desktop and

its not deleted.

Solution:

1. Install gnome-tweak-tool

$ pacman -S gnome-tweak-tool

2. Install gnome-shell

$ pacman -S gnome-shell

note: gnome-tweak-tool will not work without gnome-shell

3. Launch gnome-tweak-tool using console. Make sure that the File

Manager Have file manager handle the desktop) is ON

$ gnome-tweak-tool

4. Uninstall gnome-shell $ pacman -Rnd gnome-shell

5. Reboot

6. To right click the panel, press alt+right click

Categories: linux, Linux OS, technical | Tags: , | Leave a comment

How to Configure Suncellular Huawei E220 in Linux

PLS FOLLOW THE STEPS BELOW:

1. open terminal then type:

sudo apt-get install wvdial #in ubuntu

yum install wvdial #in fedora, centos & redhat

sudo pacman -S wvdial #kahelos & arch linux

Note: If you check the /etc directory and you found out that there is no wvdial.conf, you can create by typing touch wvdial.conf in console/terminal.

2. Edit wvdial.conf
Note: you can use vim, vi, nano & gedit editor.

3. Copy the configuration below

[Dialer Defaults]
Init1 = ATZ
Init2 = ATZ
Init3 = ATE0 V1 &D2 &C1 S0=0 +IFC=2,2
Init4 = AT+CGDCONT=,”IP”,”FBBAND”
Modem Type = Analog Modem
ISDN = 0
New PPPD = yes
Phone = *99#
Modem = /dev/ttyUSB0
Username = xxx
Password = xxx
Baud = 9600
Note: Determine if your suncellular modem is ttyUSB0, ttyUSB1 or ttyUSB2 using wvdialconf

4. run wvdial as root

[10:46 PM] renan etc $ sudo wvdial

–> WvDial: Internet dialer version 1.61

–> Cannot get information for serial port.

–> Initializing modem.

–> Sending: ATZ

OK

–> Sending: ATZ

ATZ

OK

–> Sending: ATE0 V1 &D2 &C1 S0=0 +IFC=2,2

ATE0 V1 &D2 &C1 S0=0 +IFC=2,2

OK

–> Sending: AT+CGDCONT=,”IP”,”FBBAND”

OK

–> Modem initialized.

–> Sending: ATDT*99#

–> Waiting for carrier.

CONNECT

–> Carrier detected.  Waiting for prompt.

–> Don’t know what to do!  Starting pppd and hoping for the best.

–> Starting pppd at Sun May 30 10:46:37 2010

–> Pid of pppd: 3220

–> Using interface ppp0

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> local  IP address 10.150.122.98

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> remote IP address 10.64.64.64

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> primary   DNS address 202.138.128.50

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

–> secondary DNS address 202.138.128.54

–> pppd: (�[16][08](�[16][08]@�[16][08][10]�[16][08]

Enjoy!!!
Categories: linux, Linux OS, technical | Tags: , , , , , , , | 2 Comments

No GDM (Gnome Display Manager)

Problem: After installing Kahelos in Dell Precision M90, i dont see any login screen.

And The Problem is: Xorg

Solution: Pls follow the steps below

Auto Configuration

1. # Xorg -configure

Note: Run Xorg -configue as root. The use of this command will cause the Xorg server to loads all the video driver modules, probes for available hardware, and write an initial xorg.conf file based on what was detected. The command automatically generates /root/xorg.conf.new.

2. Rename the xorg.conf.new. Make it xorg.conf

3. Copy xorg.conf inside /etc/X11/

4. Reboot

Thats it!!!


Categories: linux, Linux OS, Uncategorized | Tags: , , , , , , , , | Leave a comment

How to Install Nagios in CentOS

Install the Following
yum install -y httpd gcc glibc glibc-common gd gd-devel

Do the following commands

# useradd -m nagios
# echo ‘****’ |passwd –stdin nagios
# groupadd nagcmd
# usermod -a -G nagcmd nagios
# usermod -a -G nagcmd apache
# cd /usr/local/src

#wget http://downloads.sourceforge.net/project/nagios/nagios-3.x/nagios-3.2.0/nagios-3.2.0.tar.gz?use_mirror=ufpr

# tar -zxvf nagios-3.2.0.tar.gz

Optional # rm -f nagios-3.2.0.tar.gz

# cd nagios-3.2.0/

# ./configure –with-command-group=nagcmd

 

# make all

# make install

# make install-init

# make install-config

# make install-commandmode

# make install-webconf

# htpasswd /usr/local/nagios/etc/htpasswd.users <username>
# service httpd restart

# wget http://downloads.sourceforge.net/project/nagiosplug/nagiosplug/1.4.14/nagios-plugins-1.4.14.tar.gz

use_mirror=ufpr

# tar -zxvf nagios-plugins-1.4.14.tar.gz

Optional # rm -f nagios-plugins-1.4.14.tar.gz

# cd /usr/local/src/nagios-plugins-1.4.14

# ./configure –with-nagios-user=nagios –with-nagios-group=nagios

# make

# make install

# chkconfig –add nagios

# chkconfig nagios on

# service nagios start

Problem

1.It appears as though you do not have permission to view the configuration information you requested…

If you believe this is an error, check the HTTP server authentication requirements for accessing

this CGI and check the authorization options in your CGI configuration file.

Solution: You need to set “authorized_for_configuration_information” in cgi.cfg (nano /usr/local/nagios/etc/cgi.cfg

Categories: linux, Linux OS, technical, Uncategorized | Tags: , , , , , , , , , | 3 Comments

Repost: A CD that you give becomes a meaningful CD (Clout of Discovery)

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How to Install Vodafone and How to use Huawei in Ubuntu

If you want to use huawei in ubuntu you need to download the driver and the application called
mobile­connect­card­driver­for­linux_2.0.beta1_i386.deb

What is Vodafone 3G devices Internet connection assistant?

Vodafone Mobile Connect Card driver for linux is a tool that manages 3G devices and mobile phones with an easy to use interface in PyGTK for mundane tasks such as connectingto the internet, sending SMS,managing contacts, and such.
Install the Dependencies
sudo apt-get install bluez-gnome python-gnome2-desktop

Steps on how to install and configure the vodafone mobile connect
2. After downloading the package. Open it with the GDebi Package Installer and click the install button on the right side.
Note: Above is the graphical interface on how to install vodafone mobile connect
3. After the installation you can now configure your huawei profile. Go to application>internet>vodafone mobile connect card driver for linux. Then open the application.
Note: Above is the graphical interface loading the vodafone mobile connect
4. After loading the vodafone mobile connect, you can now create a new profile for your huawei.

Note: Above is the graphical interface on how to create a new profile
5. After creating new profile click OK you can now surf the internet and ENJOY!!!
How to Use Vodafone Mobile Connect
Note: Above is the Graphical interface if you want to use some features of vodafone mobile connect

The connect Button – if you want to connect to the internet you can simply click the connect button
The Mail – if you want vodafone directly connect to you email client you can simply click the mail button.
The SMS – if you want to use vodafone to send some message to your friend you can simply click the SMS button.
The Internet – if you want to load your web browser automatically you can simply click the Internet button.
The Usage – if you want to check the usage of your vodafone. How many data are being transferred? Remember that this information is only orientative.
The Support – you can easily find answer to the most common questions in the help menu or simply call your administrator. For more information kindy visit http://empresas.vodafone.es

Categories: buhay buhay, linux, Linux OS, technical, Uncategorized | Tags: , , , , , , , , | 1 Comment

Dansguardian (Content Filtering is not Running) in ClearOS

The content filtering is not running in webconfig:

Steps on how to solve Dansguardian error

1. See what are the errors in your logs (/var/log/dansguardian-av/access.log)

2. On my log, it says that no exceptionextensionlist and exceptionmimetypelist (no such file or directory)

3. recreate a exceptionextensionlist and exceptionmimetypelist file inside /etc/dansguardian-av/list (this is the location where to place the exceptionextensionlist and exceptionmimetypelist

4. service dansguardian-av start

Note: The content filtering is now functioning in webconfig after restarting dansguardian-av


Categories: linux, Linux OS, technical, Uncategorized | Tags: , , , , , , | 2 Comments

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