How do I find out that how many files are open and how many allowed in Linux server operating systems?
How can I stop the flushing of mmaped pages to disk in Linux?
The NAT based connectivity is useful for easy deployments. However I want to use full bridging, where the guest is connected directly to the LAN. How do setup and share physical network with host and rest of the LAN under Linux?
How do I set advanced security options of the TCP/IP stack and virtual memory to improve security and performance of my system? How do I configure Linux kernel to prevent certain kinds of attacks using /etc/sysctl.conf? How do I set Linux kernel parameters?
I‘m getting an error which read as follows under FreeBSD 7.2 server and Squid stable caching server:
WARNING! Your cache is running out of filedescriptors
How do I fix this problem and increase the number of system-wide available filedescriptors for FreeBSD server?
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?