How Jeroen Zomer sees IT

Archive for the ‘work’ Category

Remembering unlimited passwords

Wednesday, June 8th, 2011 Posted in security, technology, work | No Comments »


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You probably hate all your passwords, just like me. I have tons of them and I use tools like 1Password and KeePass to store them relatively safe with a masterpassword. I also have a few strong passwords I reuse a ...

Decoding WebSphere passwords

Tuesday, May 17th, 2011 Posted in security, technology, websphere, work | 28 Comments »


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Older versions of IBM WebSphere encodes its passwords with a simple algorithm. These passwords are not encrypted and it has been known for long that decoding them is fairly simple. So far the presented methods did not always suit my ...

SSH login with a certificate (Windows)

Monday, May 2nd, 2011 Posted in security, technology, work | 4 Comments »


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One of the most convenient ways to login to a server with SSH, is with certificates. Although the principle is pretty well documented all over the internet, I still found some issues setting it up myself from my Windows laptop, ...

SSH login with a certificate (OSX)

Sunday, May 1st, 2011 Posted in security, technology, work | 4 Comments »


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One of the most convenient ways to login to a server with SSH, is with certificates. Although the principle is pretty well documented all over the internet, I still found some issues setting it up myself from my Mac, hence ...

No root, please!

Sunday, March 6th, 2011 Posted in security, technology, work | No Comments »


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When you are dealing with system security, you need to create a secure system from the ground up. This is why you should never need root access to perform your job, even installing software. The principle of security lies in separation ...