Mobarak Hosen Shakil imShakil

IP Tables (iptables) Cheat Sheet

IPTables is the Firewall service that is available in a lot of different Linux Distributions. While modifiying it might seem daunting at first, this Cheat Sheet should be able to show you just how easy it is to use and how quickly you can be on your way mucking around with your firewall.

Resources

The following list is a great set of documentation for iptables. I used them to compile this documentation.

How-To Geek: The Beginner’s Guide to iptables, the Linux Firewall: https://www.howtogeek.com/177621/the-beginners-guide-to-iptables-the-linux-firewall/
IPTables Essentials: Common Firewall Rules and COmmands https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands

LPI-1 101 Notices

Topic 101: System Architecture

101.1 Determine and configure hardware settings
101.2 Boot the system
101.3 Change runlevels / boot targets and shutdown or reboot system

Topic 102: Linux installation and package management

102.3 Manage shared libraries
102.4 Use Debian package management
102.5 Use RPM and YUM package management

Array

Setup

Get nodejs from Node

To run

node server.js

Deploy Node.js to VPS using Github Actions

Steps to deploy Node.js to VPS using PM2 and Github Actions

1. Clone repo to VPS folder

I was trying to setup Shibboleth SP with our Gluu Server which is used the Shibboleth IDP. For no reason, I was stuck at this situation. After speending few hours I was able to detect the issue and solved the problem. This may help you too.

Error at `shibd.log`:

2022-06-10 01:25:08 ERROR XMLTooling.CredentialResolver.Chaining : caught exception processing embedded CredentialResolver element: Unable to load private key from file (/etc/certs/domain.key).
2022-06-10 01:25:08 INFO XMLTooling.CredentialResolver.Chaining : building CredentialResolver of type File
2022-06-10 01:25:08 INFO XMLTooling.SecurityHelper : loading private key from file (/etc/certs/domain.key)

	#!/usr/bin/swift

	import Foundation

	let path = URL(fileURLWithPath: NSString(string: "~/Library/Application Support/.ffuserdata").expandingTildeInPath)
	let data = try! NSData(contentsOf: path) as Data
	let dictionary = try! NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(data) as! NSDictionary
	let mutableDictionary = dictionary.mutableCopy() as! NSMutableDictionary

	for (key, value) in mutableDictionary {

	#include<bits/stdc++.h>
	using namespace std;

	void BinaryPrint(int n)
	{
	if(n==0) return;
	BinaryPrint(n/2);
	printf("%d", n%2);
	}

	#!/bin/sh

	# Uncomment this is you want some more verbose output to see what is happening
	#set -x

	## Variables
	# Change this directory name if you want to place these somewhere else
	_projectdir=~/projects
	_gitrepo=https://github.com/mkubecek/vmware-host-modules.git
	if [ $(grep -q "workstation.product.version" /etc/vmware/config;echo $?) -eq 0 ];then

	If you'r using MAC Intel CPU you want to use VMware to virtual your desired OS such Windows or Ubuntu on the MAC OS you need to download VMware Fusion Player first then it has two version Pro and Player, the Player version is free for personal use but you need to create VM account to download and licence key.

	You can create account to download yourself here:
	https://customerconnect.vmware.com/group/vmware/evalcenter?p=fusion-player-personal

	If you don't want to create account to get license, you can try below original license key for VMware Fusion Player:

	COMPONENT:
	VMware Fusion Player – Personal Use