Welcome to It-Slav.Net blog
Peter Andersson
peter@it-slav.net

I've already got a female to worry about. Her name is the Enterprise.
-- Kirk, "The Corbomite Maneuver", stardate 1514.0

Background
I wanted to use a 3G dongle with a twin SIM card as my Internet connection when I’m traveling. I have earlier decribed howto share the Internet connection and make it more flexible by using an OpenWRT router with USB interface as a bridge between Wlan and 3G/GPRS provided internet.
Unfortunatly Tele2s support personel cannot keep track of the unlogical [...]

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Background
After waiting for the Hummingbird release for the LaFonera 2.0G a long time and discussed with the Fon support team when 3G dongles will work, I gave up and installed OpenWRT on my LaFonera 2.0G router.
 
I’m sorry FON, you have a cool idea and nice routers but your unlogical approach to the users and communtity, finally got [...]

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Background
After succesfully installed my new Linksys WRT160NL with OpenWrt, the next step is to configure it. As the summer is approaching and my need for Internet access in our summer cottage will arrise. The summer cottage is in the middle of nowhere so it would be handy to put a USB dongle and the Wlan [...]

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Background
After getting fedup with the bad fon support I decided to give a new wireless router a try. After browsing internet and openwrt forums I thought that a Linksys WRT160NL would fulfill my requirements:
The requrements are:

N
3G USB dongle
Cheap

 

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26
May

This is old news but still important.
 

- OpenBSD 4.7 RELEASED ————————————————-

May 19, 2010.

We are pleased to announce the official release of OpenBSD 4.7.
This is our 27th release on CD-ROM (and 28th via FTP). We remain
proud of OpenBSD’s record of more than ten years with only two remote
holes in the default install.

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I’m the happay owner of a Huawei E1750 modem and it is real easy to get it running in Ubuntu. This guide will probably work with many other 3G USB modems.
Just type from the command line:

sudo apt-get install usb-modeswitch

Plug in the modem
Go to the Network manager and enter your Mobile Broadband credentials and now it works!

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With my new and fancy HTC Desire I wanted to look at my Nagios or op5 Monitor status. I have found two apps Nagroid and NagMonDroid.
 

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I wanted to use the Android SDK on my Ubuntu machine, mainly to grab screenshoots but also to play around with it.
 
I followed the guidelines at this guide, but it did not work. DDM just show garbage as the device and when trying to get a screenshoot it complained with:

54:42 W/ddms: Unable to get frame [...]

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After waiting for several weeks, my new phone, a HTC Desire has finally arrived. I have been a heavy cellphone user since started working as a Tivoli consultant in -98. I bought my first cellphone -94 and have had several so called smart phones both from Nokia and Ericsson.
 
For the first time I felt that [...]

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23
Apr

 
I have not updated my blog lately because of heavy traveling. In Tuesday, after visiting GoOpen 2010, I took this picture at Gardemoen, Oslo. I was very lucky because my flight was DY3774

It seams like I was in luck and used an ash hole to get home:-)

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Filled Under: Cool things

Background
I bought a Fonera 2.0g WLAN router and I wanted to extend the functionality to have the possibility to add packages from OpenWRT. I also wanted the possibility to manage my new router with ssh.
The way to achive this is by installing developer firmware.

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23
Mar

 
When using a cool router software like OpenWRT it is a good idea to monitor the network usage. This article describe howto get SNMP on your OpenWRT based router.
 

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 Background
I got an unused La Fonera router by a collegue. They can be bought from http://www.fon.com for approximately 40 Euro including freight. The purpose of the Fon community is to build a community of hotspots around the world so every owner of a La Fonera could use any other La Fonera router in the world.
 
I [...]

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Background
It is always a good idea to monitor the server hardware, in many cases the root cause of the probblem is hardware related like: a fan stops and the temperature gets to high, dust in the machine makes it to hot, disks that fails, memory corruption and so on.  This article will describe howto enable [...]

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26
Feb

The release of the next generation Open Source Network Monitoring Software is only weeks away with the release of op5 Monitor 5. Here you can download a Beta version of the sofware intended for testing och evaluation or try it at a live demo.

op5 Monitor Beta, virtual image in ovf format
Try op5 Monitor Beta

The op5 [...]

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I have an old iPod G3 player that I haven’t used for several years. The main reason is that it is full of Apple vendor lock-in "features". The most annoying issues are:

Hard to manage without iTunes
iTunes is crap
Cannot play ogg and flac
I just want to attach it and it should popup like a USB disk, drop [...]

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12
Feb

 
Background
I was with my geekfriends at a ski resort and I managed to get an Internet connection using a cellphone. Of course I wanted to share it with my friends. As geeks we brought a switch and a couple of ethernetcables.
 
Solution
Using this script on a Ubuntu 9.10 I managed to share my connection:

sudo ifconfig eth0 10.8.16.1
sudo sysctl -w net.ipv4.ip_forward=1
sudo [...]

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Background
At op5 we often run into BizTalk at customer sites as a business critical application. We have done an investigation and come up with a plugin  to monitor BizTalk.
To fully understand this document BizTalk knowledge is necessary.

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My laptop and cellular phone has both Bluetooth and it has annoyed me for a while that I have not managed to get a working Internet connection using Bluetooth. I have only managed to get it working with a USB cable between my phone and laptop.
 
After some Google search and reading of man pages I finally [...]

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After fiddeling with my Bluetooth GPS reciever I wanted my friends and my wife to keep track of me. I wanted to use OpenStreetMap because I really like the idea of free and open maps instead of the unintelligible Google Maps licenses. The result can be seen here where I show the op5 office location outside Stockholm, Sweden.
 
 
Pre [...]

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18
Jan

Every computer geek ends up with a bunch of disks with unknown status in the drawer. It can be rather cumbersome to put them in a machine and check the status especially if some are SATA and others are PATA, it gets even more complicated if they are mixed 3.5" and 2.5".
In situations like this [...]

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I have finished reading the great book "FreePBX 2.5 Powerful Telephony Solutions", by Alex Robar and it is 277 pages.
 

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Background
I was reading the Swedish computer magazine, Tech World. There was an article about an appliance solution that could give a report about unused switch ports. The box PortIQ from Infoblox costs approximatly 10.000 Euro.
op5 has developed this feature at a customer site and is included with op5 Monitor, op5 has published the code as opensource.
This [...]

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Background
This article will describe how easy it is to integrate other tools to Nagios or op5 Monitor. I will use an example with a webshop where a business view of how the webshop is doing is implemented by using a GPL’d rule engine, NodeBrain. I have in an earlier article described the ruleset for this implementation [...]

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Background
When I worked as a Tivoli Consultant I spend a lot of time investigating the customer processes and workflow and try to make the monitoring solution to support this. It was often long term projects and involved alot of people like, project managers, support staff, maintenance staff, application owners, applicataion engineers, operating systemens managers, DBAs and [...]

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Book reviews
FreePBX 2.5
Powerful Telephony Solutions






Asterisk 1.6
Build a feature rich telephony system with Asterisk






Learning NAGIOS 3.0





Cacti 0.8 Network Monitoring,
Monitor your network with ease!