I recently treated myself to a new mobile phonecomputer, so I bought a Nokia N900 which eXpansys eventually shipped to me. Now to the point, you can easily share content to Facebook, Ovi, and Flickr but I maintain my own Gallery2 installation and I wanted to upload my photos there as well. Luckily the sharing infrastructure is pluggable, so all I needed was a plugin which I found. 
Configuring it was a bit of a headache so here is how I did it. (more…)
Posts Tagged ‘howto’
Sharing photos from N900 to Gallery2
Monday, February 1st, 2010Punching holes in Firewalls
Sunday, November 16th, 2008It is a lot easier than you think.
OpenSSH, which can only be described as the best utility of all time, is quite a versatile tool one feature people use frequently is port forwarding. This allows you to open a port on your computer that forwards the data over the SSH connection to the destination you specify, very useful when needing access to the an intranet web server when you don’t have a proper VPN set up for example. However, SSH can also do this in reverse! It opens a listening port up on the remote machine which then relays data to the destination you specify. For example you can SSH into a remote host and get SSH to open a port on that host which relays data back to the SSH port on the machine you are connection from, thereby allowing SSH access to a machine where it would normally be impossible.
A practical example:
chris@ktulu:~$ ssh sandman.cs278.org -R 2222:localhost:22
This connects to the server sandman.cs278.org and opens port 2222 which forwards traffic to localhost:22 (localhost is the machine I am connecting from). Once logged into the server I can do this:
chris@sandman:~$ ssh localhost -p 2222
Which opens a connection back to the remote machine.
Blocking SSH Brute Force attempts using iptables
Saturday, January 12th, 2008After my recent break in I have looked into ways of protecting SSH and my server resources. I employ fail2ban on my main server, it has the resources to run such a programme – my Linksys NSLU2’s however do not. The solution is to use iptables to limit the number of connections any host can make in a given time frame. I wrote up a quick how to on this over at my wiki. Enjoy.
