am new Linux system user. How do I reload all sysctl variables without rebooting my server?
‘m a new FreeBSD unix user. How do I get the temperature of an Intel or AMD processor (CPU) in FreeBSD using command line option?
run a web-server and I would like to log packets with un-routable source addresses on Linux operating system. How can I log spoofed packets on Debian / Ubuntu / CentOS / RHEL / Linux based server? How can I log a Martian packet (packet from Mars) on Linux operating systems?
am trying to set exec-shield protection on Linux as described here
but getting the following error on Ubuntu Linux server version 12.04 LTS:
sysctl -w kernel.exec-shield=1
error: “kernel.exec-shield” is an unknown key
How do I fix this problem and make sure exec-shield buffer overflow protection security feature turned on Ubuntu Linux?
am under DoS attack. My cloud based server hosting company asked me to enable TCP SYN cookie protection to save my domain from SYN Attack. How do I turn on TCP Syn cookie protection under Ubuntu or CentOS Linux based server?
know how to find out battery life status using Linux
operating system. How do I monitor battery status on a laptop running FreeBSD version 9.x?
I‘m trying to use Cinelerra video editing and compositing software under Linux operating systems. However, I’m getting the following error:
MWindow::init_shm: /proc/sys/kernel/shmmax is 0x1000000.
It should be at least 0x7ffffff for cinelerra.
How do I fix this problem?