01-16-2014
Which flavor of UNIX or Linux to learn?
Hi all,
Noob here. I have been dabbling with Linux for years, basically installing different types of distros and becoming familiar with the default gui that came along with it.
At this point, I find myself wanting to learn alot more. It would be great if that knowledge helped me move forward in my IT career. I work currently as a lowly data center operator monitoring crucial systems. I want to administer them! I want to be a Unix guru.
So which flavor is really worth learning? Which is the most widely used in production systems? Solaris, Fedora, Suse ?
Where does one begin ?
Thanks in advance for the help.
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MASON(1) MASON(1)
NAME
mason - interactively create a firewall
SYNOPSIS
mason < logfile > rulefile
DESCRIPTION
This manual page briefly documents the mason command.
mason interactively generates a set of firewall rules for a Linux-based firewall. This is done by turning on full IP logging, watching the
logs for connections, and generating rules describing the connections seen. mason is familiar with most of the quirks of various connec-
tion types (such as ftp and IRC), and can output rules for 2.0.x ipfwadm, 2.2.x ipchains, and Cisco packet filters.
mason operates by reading in log file information from standard input and writing firewall rules to standard output. This allows mason to
work offline or on a separate system. Real-time firewall generation can be achieved with a command like tail(1).
Most users will want to run mason with a user-friendly interface such as mason-gui-text(1).
ENVIRONMENT
mason is configured using the following environment variables.
ECHOCOMMAND
Sets the type of firewall rules that mason should output to standard out. Allowed values include "ipfwadm" and "ipchains". By
default, mason outputs whatever kind of rules are supported by the currently running Linux kernel.
DOCOMMAND
Sets the type of firewall rules that mason should run immediately when a rule is generated. Allowed values include "ipfwadm" and
"ipchains". By default, mason outputs whatever kind of rules are supported by the currently running Linux kernel.
HEARTBEAT
If set to "yes", mason will output a "+" or "-" to standard error whenever a rule generated by mason has been triggered.
DYNIP Set this to the list of interfaces that have dynamically assigned addresses, separated by spaces.
SEE ALSO
mason-gui-text(1)
AUTHOR
This manual page was written by Jeff Licquia <jeff@luci.org>, for the Debian GNU/Linux system (but may be used by others).
MASON(1)