|This month, Paul Grosse gives you more insight into
some of the topics dealt with in HelpDesk and HelpDesk
Origami Webcam Cover
If you have kids, their browsing habits (running scripts and so on) might lead to spyware being installed and executed automatically on your computer. If you have a local network, it might be that for someone in your house (or office) the same situation could exist. Some spyware can be configured to activate your webcam and either take images at regular intervals or continuously.
To combat this, you can either unplug your webcam every time your teenage daughter leaves it to go and do a few more pages (or lines) of homework (and get moaned at both by her when she comes back and the system which has to detect it again and set up all of the drivers and so on each time it is plugged in) or you can cover up the camera. If you just put a piece of paper in front of it, this can get knocked off and so on. The origami webcam cover therefore is your ideal solution and here is how to make it.
First of all, origami is just paper folding whereas this includes one cut with the scissors but that is after all of the origami has been done so please don't flame me. Secondly, for those who know origami, I'll cut to the chase - this is just a water bomb with the end cut off. For everybody else...
Windows SMB shares in GNU/Linux
Windows uses a system for file and printer resource sharing called SMB. In GNU/Linux, the process is called Samba. Each machine needs to have an SMB server for other machines to see its resources and an SMB client for it to see the resources on other machines.
In Windows, you just need to set up file and print sharing and all is done. In Linux, you need to configure and start the services. Although this sounds like it is a bit more of a hassle in Linux, you only need to make sure the configuration files have the correct information and you have the right services running. This is done using a text editor such as KWrite instead of working yourself through a maze of silly wizards.
First of all, you need to get Linux to recognise the SMB shares. To do this, you need to run smbfs which can be done in the list in the Runlevel Editor in the Control Centre in YaST2.
To view SMB shares in Linux, you can do one (or both) of two things:
GNU/Linux Samba (SMB) shares in Windows
This allows you to see directories and files (and printers if you want) on Windows machines on the LAN.
To get this working, you need to have the smb daemon and the nmb daemon running (you can check this in the runlevel editor in YaST2).
Open up the file /etc/samba/smb.conf in KWrite and at the bottom of the file, include the shares you want.
The following is an example (on a machine called 'opal') that allows read/write access (and is belt and braces as far as use of names goes so it should work with most versions) but you can limit this once you have got it working - details are in the man pages for smb.conf
[NetStore] comment = Network Addressable Storage path = /nas/cache public = yes guest ok = yes create mask = 0777 directory mask = 0777 read only = no writable = yes locking = no
This creates a share from the Linux machine (from a directory called '/nas/cache') that in a Windows machine appears in the network file structure as opal\NetStore\ that the user can read from and write to.
Use the mask numbers to limit access - this was discussed in HelpDesk PC Plus issue 213.
Find your real IP address
Many websites claim to be able to tell you your IP address but unfortunately, all they can tell you is the IP address of the proxy server that your ISP routes all of your Internet traffic through. This is simply because that is all that the website's webserver has been told to look for.
If you search Google using ip address (http://www.google.com/) then look at the sites with 'my IP address' or 'what's your IP address' or similar, you will get a variety of IP addresses (look at just the last number in the address as it is likely that the first three will be the same in each case. This should happen unless you happen not to go through a proxy (or your ISP only uses one proxy server).
To find your IP address, so that your friends can look at your web server or whatever service you wish to provide, you can go to http://checkip.dyndns.org/ where they have sorted out the problem.
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