Networking at home

Sometimes you may need to access WAP sites from your desktop computer, for example if you want to save a downloaded java game or you want to access some information on WAP which is normally only accessible from a phone. There are two problems to be solved: user agent setting for the browser - you may need to change this, in order to make the web site think that you are browsing it from a mobile phone using the operator's wap network, because some content is only available if you are accessing it from the operators network. Changing user agent For the first, theeasiest solution is to use Firefox and then change the 'general.useragent.override' setting of the browser for example to: Nokia6230/2.0+(04.43)+Profile/MIDP-2.0+Configuration/CLDC-1.1+UP.Link/6.3.0.0.0 to simulate a Nokia 6230. You can check your browsers user agent on this web page . For a list of user agent string for different phones go here . Using the WAP network The easiest way of connecting your...

I have not checked it very thorowly, but Ericsson has changed a lot of the programs used in the Ericsson W25 router. I have mentioned before that the wget has dissapeared. The time setting from network is now fixed, it keeds up and running even after connecting and disconnecting to the ionternet. Another change that the DNS and DHCP services were changed to a program called DNS relay, you can find it's decription here. If you want your domain handled with it, simply put the following line in your /etc/dhcpdoptions.conf file: domain=your.domain Other new tool is the xl2tpd (which is not and excel to pdf converter :-) which is the tunneling (e.g. ipsec) handling part. description of a simmilar program can be found here.

I would like to have an always on server for my home network, and altrough I have already two ARM based routers which can be customized, I would like to have an x86 based computer, because it is much easier to install linux programs on it and normally they have faster processors and more memory than the ARM counterparts. I would like to use it for 3 functions: To be the center of the home network with an Apache based WEB interface, whcih can do all network related tasks Install an Asterisk PBX and connect all our phones to it, including mobile phones via Bluetooth Be a storage backup server with two Tbyte or close to Tbyte SATA hard disks Earlier I had a 3G/HSDPA WLAN gateway created from an old laptop, and with the HDD and display switched off, it consumed only 10W, but I was considering to have a modern desktop motherboard with a Intel E2160 or simmilar processor to reach a good power consumption. Before going into this I checked the power consumption of different solutions ...

After long monthes of perfect working, last week my internet connection trough the W25 started to become very unstable, most of the time even not working. Looking at the statistics it turned out that something hapened in the network, which increased the speed of my connection :-), but after approximately one day, the connection became unstable and was more down that working. My first guess was, that my operator has upgraded the serving cell from 3,6 Mbps to 7,2 and the 7D firmware I was using may have a bit buggy radio module. So I started the upgrade. First I have upgraded to 11A, because I have downloaded that already before, and with the bad connection I could not check if there is a better FW available. The upgrade from the WEB UI went pretty smothly, after waiting a lot for checking the radio module FW version, the procedure ended without any problem. I was a bit afraid, that my root password will be changed, but the upgrade behaved correctly and did not change my credien...

In my prevoius blog I wrote about my tests to increase the read/write speed on my Linux home server, now I will collect some links here: A very good comparition of Windows and Linux file system for using as a NAS. Test result for a consumer NAS device. Test results for Linux file systems (ext2, ext3, Reisser, XFS). IOZone test suite. NAS performance measurement comparations. A test measurement of comparing Solaris ZFS, Ext2 and XFS in NAS environment. It is using NFS intead of SAMBA, but the speed results are very convincing with read speeds over 76 Mbyte/sec and write speeds arround 35 Mbyte/sec. I started to do some own test in the server itself, and copying a file from one disk to an other was done with the speed of 23,4 Mbyte/sec, which shows, that it is possible to write to an ext3 filesystem with speeds above 20 Mbyte/sec. I will do some more testing later. I did some testing on my Windows Desktop computer and got a read and write speed of ~90 Mbyte/sec, and thi...

I have recently installed a gigabit card to my home fileserver and was very dissapointed, that the speed of network writes and reads did not increased as I expected. I found some Samba improvement tips, but they increased the speed only by ~10 percent, while I would expect to have network speed on the range of 50 Mbytes/sec. To make an experiment I wanted to use NFS instead of Samba, from one unix test it looked much faster than Samba. There is an official Microsoft client for this, it is named Unix Services for Windows, the actual version is 3.5 and it is quite outdated. Still after installing it and configuring both the server and the Windows XP it worked adn when attempting to read files it was quite stable. But as soon as I tried to copy a 4,3 Gbyte ISO image, my XP crashed completly :-( After a lot of search finally I could identify that you should apply the hotfix: KB904838 and this will solve your problem. Back to the original problem, I have measured the following sp...

Setting up a Windows Mobile device corretly for accessing internet, corporate network, MMS and WAP is not a trivial task and on the top of it it can not be done using only the user interface provided on the device. The easiest way of doing it is to create a special XML file, containg the needed settings, then put it into a cab file, which can be simply installed on the device. In this post there will be a short overview of the handling of the different networks in a WM device, then there will be the explanation of the configuration file created for the Pannon nework in Hungary and then some references will be given to further setting possibilities. As oposed to other mobile phones, where you have to set the gprs connection manually for each application, in windows mobile there is a rather complex system, which tries to figure out automaticaly from the web address used, that which connection to use. Let's see, how this works: First the address is compared to the Mappings an this de...