Access Cisco's ASDM via Linux Ubuntu

First you need to install the following if its not already installed 

sudo apt-get install gcj openjdk-6-jre cacao gij jamvm 

Now go to the management interface 192.168.1.1 or whatever you re-ip'ed it to. 

Click Run ASDM - if OpenjDK is not in the Open With then save the asdm.jnlp to your home directory. 

After that downloads you can 

chmod +x asdm.jnlp 

javaws asdm.jnlp