Firefox: Add a Trusted CA

Posted on in Categories , , , , , , , , , , , , , , , , , , last updated August 31, 2009

The default Firefox comes with certificates from well-known commercial CAs. My ISP is also CA and Firefox cannot verified it because the CA is not recognized. How do I force Firefox to accept my ISPs certificate?

Adobe Photoshop Alternatives For Linux Desktop

Posted on in Categories , , , , , , , , , , , , last updated August 13, 2009

I need Photoshop alternative under Ubuntu Linux for basic editing. I know Photoshop can be run using Wine but I’m not able to afford expensive software for just basic editing. Can you suggest a few free FOSS apps that works as alternatives to Photoshop under Ubuntu or Fedora Linux desktop operating systems?

Tunneling X Connection Through Intermediate Linux / BSD Gateway

Posted on in Categories , , , , , , , , , , , , , , last updated May 7, 2009

I‘ve ssh gateway behind my NAT firewall. So all users must first login to my gateway host from the internet and then login to other machines on the LAN. This works great for cli based apps. However, few users would like to run x apps from internal LAN hosts and tunnel X display through intermediate ssh gateway and display back output on their local system. For example, from localsystem user makes connection as follows:

ssh -X [email protected]
ssh -X [email protected]

X forwarding fails with an error:

Error: Can’t open display:

How do I fix this problem and allow users to use X apps with my intermediate Linux / BSD gateway?