Jim Hume JimHume

Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table

Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

http://sijinjoseph.com/programmer-competency-matrix/

Describes the different areas and requirements to becoming skilled in computer science. Very valuable as both something to strive for and personally evaluate against, and also as a manager to look for these characteristics in your reports.

https://www.linkedin.com/pulse/7-things-make-great-bosses-unforgettable-dr-travis-bradberry

This was a great article for management, but also for developers. Providing feedback to a manager that they are or aren't following some of these tips can be extremely valuable in both directions.

	# Note: One would want to wrap this in a batch file that contains this:
	# PowerShell -NoProfile -ExecutionPolicy Bypass -Command "& '.\LaunchKubernetesDashboard.ps1'"
	# (or whatever you name the file)

	clear

	# Get the currently-active cluster name
	$clusterName = $(kubectl config current-context)
	# Get the user name for the active context
	$contextUser = $(kubectl config view -o jsonpath="{.contexts[?(@.name == '$clusterName')].context.user}")

	clear
	# Find the current cluster admin user token
	$clusterName = $(kubectl config current-context)
	$contextUser = $(kubectl config view -o jsonpath="{.contexts[?(@.name == '$clusterName')].context.user}")
	$token = $(kubectl config view -o jsonpath="{.users[?(@.name == '$contextUser')].user.token}")

	# Copy the admin token to the clipboard
	Set-Clipboard $token

	# Launch the dashboard and open it in a browser

	public static class DbContextExtensions
	{
	/// <summary>
	/// Resolve the connection string for the given <see cref="DbContext"/>. This resolves variables in the
	/// connection string to their local values. E.g. "Data Source=\|DataDirectory\|\Database.sdf" will resolve
	/// to "C:\ProgramData\MyApp\Database.sdf".
	/// </summary>
	/// <param name="dbContext"><see cref="DbContext"/></param>
	/// <returns><see cref="string"/>: The fully-resolved connection string.</returns>
	public static string GetResolvedConnectionString(this DbContext dbContext)

	#!/bin/bash

	################################################################################
	# Constants

	# TOKEN: Taken from an API bot
	TOKEN='letters-numbers-numbers-numbersandletters'

	# CHANNEL: When viewing the desired channel in a browser, this will be the last
	# segment of the URL

	#!/bin/bash

	# This is the contents of the updated script:
	NEW_SCRIPT=$(cat << EOF
	package setup_update;
	sub process {
	return 'success';
	}
	sub display {
	my $vars = shift @_;

	#!/bin/bash


	function arg_or_default()
	{
	if [ -n "$1" ]; then
	echo "$1"
	else
	echo "$2"
	fi