[SOLVED] VSFTPD Errror Message – 500 OOPS: cap_set_proc or vsf_sysutil_recv_peek

After upgrading my server from Ubuntu 7.04 (Feisty Fawn) to 7.10 (Gutsy Gibbon), I got the following error messages “500 OOOPS: cap_set_proc” on some occassions and “500 OOPS: vsf_sysutil_recv_peek” on other occassions. After some googling, I found out that I need to install the module called “capability”.

To check if this module is already installed run the following command:

lsmod | grep capability

If it is not listed, then it’s not installed. To install it run the following command:

Tags: , ,

[HOWTO] Digital Signing and Encrypting for Personal Use

Digital signing and encryption has been used to authenticate emails in many corporate environment to prevent spoofing. Here’s a simple guide to create a digital signature, import them and use them for personal use. My current choice of personal certificate is issued by Thawte. Thawte’s root certificate has been installed on most computer; therefore the recipient do not need to install custom root certificate to confirm the authenticity.

The first thing that needs to be done is obtaining digital certificate. Thawte’s personal digital certificate can be obtained here. After registration and verification, you can create your own certificate. The default options will allow both digital signing and encryption. Thawte also allows you to create multiple certificate for multiple accounts. Download, import and usage instructions available after the jump. Read the rest of this entry »

Tags: , , , , , , , , ,