FreeBSD Prevent Users From Seeing Information About Processes Owned by Other Users

Posted on in Categories , , last updated June 3, 2009

Many commands accepts username and passwords on the command line and ps, top, sockstat and many commands can display this information to all users on the system. How do I prevent users from seeing information about processes that are being run under another UID to avoid information leakage under FreeBSD operating systems?

Linux Tune Network Stack (Buffers Size) To Increase Networking Performance

Posted on in Categories , , , , , , , , last updated July 8, 2009

I‘ve two servers located in two different data center. Both server deals with a lot of concurrent large file transfers. But network performance is very poor for large files and performance degradation take place with a large files. How do I tune TCP under Linux to solve this problem?