Thursday, October 3, 2024

A Strong and Secure Password Generator Tool for Client side random strong password generation

In today's digital landscape, securing your online presence is paramount. Our Strong and Secure Password Generator is designed to create robust, unique passwords that protect your sensitive information from potential threats. Here’s a comprehensive look at the features that make our tool stand out.

Strong Password Generator

 

Extensive Customization Options

Our password generator provides an extensive range of customization options to meet various security requirements:

  • Password Length: Users can select a password length between 6 to 128 characters.
  • Character Types: Options include uppercase letters, lowercase letters, numbers, and special characters/symbols.
  • Ambiguous Characters: Users can choose to avoid characters like "I," "l," "1," "O," "0," which can be easily confused.
  • No Duplicates: Ensures that no character is repeated within the generated password.
  • Start with Letter: Ensures that the generated password begins with an alphabetic character.
  • Exclude Characters: Allows users to specify characters they want to exclude from their passwords.
  • Add Characters: Users can also add specific characters they want to include in their passwords.

Multiple Password Generation and Display

Our tool allows users to generate up to 100 passwords in one go. Each password is displayed separately with the following features:

  • Strength Bar: A visual indicator showing whether the password is weak, strong, or very strong.
  • Entropy Calculation: Displays the entropy value of each password, indicating its level of randomness and unpredictability.
  • Copy to Clipboard: Each password has an icon that, when clicked, copies the password to the clipboard for easy use.

Advanced Features for Enhanced Security

  • Password Strength Checking: Users can verify the strength of their passwords using our built-in strength checker.
  • Hashing and QR Code Generation: Options to hash passwords using various algorithms and generate QR codes for easy sharing.
  • Export Options: Generated passwords can be exported in multiple formats including plain text, CSV, XLSX, JSON, and PDF.

User Convenience Features

  • Copy, Export, and Print: Users can easily copy, export, and print their generated passwords for future reference.
  • Social Media Sharing: Options to share passwords securely via social media platforms.

Feedback and Suggestions

We value user feedback and continuously strive to improve our tool. Users can provide their feedback and suggestions directly through the tool, helping us enhance its functionality.

Why Choose easygeneratortools.com?

At easygeneratortools.com, we prioritize your online security. Our tool is designed to offer:

  • Flexibility: Tailor your passwords to meet specific needs and security requirements.
  • Convenience: Generate, copy, export, and print passwords effortlessly.
  • Security: Our advanced features ensure that your passwords are not only strong but also highly secure.
  • User-Centric Design: We continuously incorporate user feedback to improve the tool, ensuring it meets your evolving needs.

Try our Strong and Secure Password Generator today and take the first step towards safeguarding your digital life.

Thursday, July 25, 2024

How to copy MySQL data from one database to another database in .net core?

MySQL backup and restore some times become hack-trick task because of unnecessary lines on code generated when exporting data from mysql workbench in individual file for tables. It becomes harder if there are large number of tables.

Following is a sample console application that will copy data from a source database table and bulk insert to a destination database table. It loops through all tables and perform the data transfer of all tables.

Install MySQLConnection nuget package.

using MySqlConnector;
using System.Data;


string schemaName = "db_dev";
string sourceConnectionString = "server=srchost;user id=admin;password=mypwd;persistsecurityinfo=True;database=db_dev;";
string destinationConnectionString = "server=desthost;user id=myadmin;password=mypass;persistsecurityinfo=True;database=destdb_dev;AllowLoadLocalInfile=true;";


int i = 0;
using (MySqlConnection sourceConnection = new MySqlConnection(sourceConnectionString))
{
    sourceConnection.Open();

    // Get the list of tables in the source database
    DataTable tables = sourceConnection.GetSchema("Tables");
    DataTable filteredRows = tables.Select($"TABLE_SCHEMA = '{schemaName}'").CopyToDataTable();
    foreach (DataRow row in filteredRows.Rows)
    {
        string tableName = row[2].ToString();
        int dataCount = Convert.ToInt32(row[7].ToString());
        i++;
        // Read data from the source table
        string selectQuery = $"SELECT * FROM `{schemaName}`.`{tableName}`";
        MySqlCommand selectCommand = new MySqlCommand(selectQuery, sourceConnection);
        if (dataCount > 0 && i>=0)
            using (MySqlDataReader reader = selectCommand.ExecuteReader())
            {
                var rows = reader.HasRows;
                using (MySqlConnection destinationConnection = new MySqlConnection(destinationConnectionString))
                {
                    destinationConnection.Open();

                    // Prepare the bulk insert command
                    using (MySqlTransaction transaction = destinationConnection.BeginTransaction())
                    {
                        MySqlBulkCopy bulkCopy = new MySqlBulkCopy(destinationConnection, transaction);
                        bulkCopy.DestinationTableName = tableName;
                        try
                        {
                            // Bulk insert data into the destination table
                            bulkCopy.WriteToServer(reader);
                            transaction.Commit();
                            Console.WriteLine($"Data from table {tableName} has been successfully transferred." +i.ToString());
                        }
                        catch (Exception ex)
                        {
                            transaction.Rollback();
                            Console.WriteLine($"Error transferring data from table {tableName}: {ex.Message}");
                        }
                    }
                }
            }
    }
}


Console.WriteLine("Hello, World!");

 

 

 

 

 

 

 

 

 

Saturday, July 13, 2024

OpenSSH vs. Other SSH Clients: Which One is Right for You?

OpenSSH vs. Other SSH Clients: Which One is Right for You?

Choosing the right SSH client is essential for secure and efficient remote access. This article compares OpenSSH with other popular SSH clients to help you decide which one suits your needs.

OpenSSH

Pros:

  • Cross-platform (Unix, Linux, macOS, Windows)
  • Built-in on most Unix-like systems
  • Extensive features and customization options

Cons:

  • Command-line interface may be challenging for beginners

PuTTY

Pros:

  • Free and open-source
  • Simple GUI interface
  • Widely used on Windows

Cons:

  • Limited to Windows (native)

MobaXterm

Pros:

  • Advanced terminal for Windows
  • Embedded X server
  • Rich set of networking tools

Cons:

  • Free version has limited features

SecureCRT

Pros:

  • Cross-platform (Windows, macOS, Linux)
  • Advanced features and customization
  • Robust security options

Cons:

  • Commercial software (requires purchase)

Comparison Table

Feature OpenSSH PuTTY MobaXterm SecureCRT
Platform Cross-platform Windows Windows Cross-platform
Key Management Yes Yes Yes Yes
Scripting Support Yes Limited Yes Yes
GUI No Yes Yes Yes

Conclusion:

  • OpenSSH is ideal for users comfortable with command-line interfaces and those who need cross-platform compatibility.
  • PuTTY is suitable for Windows users looking for a simple, free SSH client.
  • MobaXterm offers advanced features for Windows users needing an all-in-one networking tool.
  • SecureCRT is a premium option for users seeking advanced features and cross-platform support.

Choose the SSH client that best fits your requirements based on your operating system, feature needs, and user experience preferences.

Automating Tasks with OpenSSH: Using SSH for Scripts and Remote Commands

Automating Tasks with OpenSSH: Using SSH for Scripts and Remote Commands

Automation is key to efficient system administration. OpenSSH allows you to automate tasks by executing commands and scripts remotely. This guide covers the basics of using SSH for automation.

Using SSH in Scripts

You can execute remote commands within a shell script using SSH. Here’s an example script:

bash
#!/bin/bash # Script to check disk usage on a remote server ssh user@hostname 'df -h'

Make the script executable:

bash
chmod +x script.sh

Run the script:

bash
./script.sh

Automating with Cron Jobs

You can schedule scripts to run automatically using cron jobs. Edit your crontab file:

bash
crontab -e

Add a cron job to run your script at a specific time. For example, to run the script every day at 3 AM:

bash
0 3 * * * /path/to/script.sh

Example: Backing Up Files with SCP

Automate file backups using scp within a script:

bash
#!/bin/bash # Script to backup files to a remote server scp /path/to/local/file user@hostname:/path/to/remote/backup/

Schedule the backup script with a cron job:

bash
0 2 * * * /path/to/backup_script.sh

Using SSH Keys for Automation

For automation scripts to run without user intervention, use SSH keys for passwordless authentication. Generate an SSH key pair and copy the public key to the remote server.

By leveraging SSH in scripts and automating tasks with cron jobs, you can streamline your system administration workflows and improve efficiency.

Setting Up SSH Key-Based Authentication in OpenSSH

Setting Up SSH Key-Based Authentication in OpenSSH

SSH key-based authentication is a more secure alternative to password authentication. This guide will walk you through setting up SSH key-based authentication in OpenSSH.

Step 1: Generate SSH Key Pair

Generate an SSH key pair on your local machine.

bash
ssh-keygen -t rsa -b 4096

This command creates a public key (id_rsa.pub) and a private key (id_rsa) in the ~/.ssh directory.

Step 2: Copy Public Key to Remote Server

Copy your public key to the remote server.

bash
ssh-copy-id user@hostname

This command adds your public key to the ~/.ssh/authorized_keys file on the remote server.

Step 3: Verify SSH Key Authentication

Attempt to log in to the remote server using SSH key authentication.

bash
ssh user@hostname

If successful, you will not be prompted for a password.

Step 4: Disable Password Authentication

For added security, disable password authentication by editing the SSH configuration file on the remote server.

bash
sudo vim /etc/ssh/sshd_config PasswordAuthentication no

Restart the SSH service to apply the changes.

bash
sudo service ssh restart

By following these steps, you can set up SSH key-based authentication, enhancing the security of your SSH connections.

How to Secure Your Server with OpenSSH: Best Practices

How to Secure Your Server with OpenSSH: Best Practices

Securing your server with OpenSSH is crucial to prevent unauthorized access and protect sensitive data. Here are some best practices for enhancing OpenSSH security.

1. Disable Root Login

Edit the /etc/ssh/sshd_config file and set PermitRootLogin no to disable root login.

bash
sudo vim /etc/ssh/sshd_config PermitRootLogin no

2. Use SSH Keys

Disable password authentication and use SSH keys for authentication.

bash
PasswordAuthentication no

Generate SSH keys:

bash
ssh-keygen -t rsa -b 4096

3. Change Default Port

Change the default SSH port from 22 to a custom port.

bash
Port 2222

4. Enable Two-Factor Authentication

Implement two-factor authentication using tools like Google Authenticator.

5. Limit User Access

Restrict SSH access to specific users.

bash
AllowUsers user1 user2

6. Use a Firewall

Configure a firewall to allow only necessary traffic. For example, using UFW (Uncomplicated Firewall):

bash
sudo ufw allow 2222/tcp sudo ufw enable

7. Keep OpenSSH Updated

Regularly update OpenSSH to ensure you have the latest security patches.

bash
sudo apt-get update sudo apt-get upgrade openssh-server

Implementing these best practices will significantly enhance the security of your server, making it more resistant to unauthorized access and attacks.

Saturday, July 6, 2024

Top 10 OpenSSH Commands Every Administrator Should Know

 

Top 10 OpenSSH Commands Every Administrator Should Know

OpenSSH commands are essential for system administrators to manage servers efficiently and securely. Here are the top 10 OpenSSH commands every administrator should know.

1. ssh

The ssh command is used to connect to a remote host.

bash: ssh user@hostname
 

2. scp

scp (secure copy) is used to transfer files between hosts.

bash: scp file.txt user@remote:/path/to/destination

 

3. sftp

sftp (Secure File Transfer Protocol) allows you to transfer files securely.

bash: sftp user@hostname

 

4. ssh-keygen

ssh-keygen is used to generate SSH key pairs for secure authentication.

bash:  ssh-keygen -t rsa -b 4096
 

5. ssh-copy-id

ssh-copy-id copies your public key to a remote host for key-based authentication.

bash: ssh-copy-id user@hostname

 

6. sshd

sshd is the OpenSSH server daemon that listens for incoming SSH connections.

bash: sudo service sshd start

 

7. ssh-agent

ssh-agent is used to hold private keys used for public key authentication.

bash: eval $(ssh-agent -s)

 

8. ssh-add

ssh-add adds private key identities to the authentication agent.

bash: ssh-add ~/.ssh/id_rsa

 

9. ssh-config

ssh-config allows you to customize your SSH client configuration.

bash: vim ~/.ssh/config
 

10. sshfs

sshfs is used to mount remote filesystems over SSH.

bash: sshfs user@hostname:/remote/path /local/mount/point

 



These commands are fundamental tools for any system administrator, 
providing essential functionality for secure and efficient server management.

 

 

Getting Started with OpenSSH: A Beginner's Guide

Getting Started with OpenSSH: A Beginner's Guide

OpenSSH (Open Secure Shell) is a suite of tools used to secure network communications via encrypted connections. This guide will help beginners get started with OpenSSH, covering installation, basic commands, and setup.

What is OpenSSH?

OpenSSH is a powerful suite of tools that allows for secure remote login and other secure network services over an insecure network. It encrypts all traffic to eliminate eavesdropping, connection hijacking, and other attacks.

Installing OpenSSH

To install OpenSSH on a Unix-like system, you can use your package manager. For example, on Ubuntu or Debian, use the following command:

bash
sudo apt-get update
sudo apt-get install openssh-server

 

For CentOS or Fedora:

bash
sudo yum install openssh-server

On macOS, OpenSSH is included by default.

 

Basic OpenSSH Commands

  1. ssh: Connect to a remote server.
    ssh user@hostname
  2. scp: Copy files securely between hosts.
    scp file.txt user@remote:/path/to/destination
  3. sftp: Secure File Transfer Protocol.
    sftp user@hostname

Configuring OpenSSH

After installation, you can start the OpenSSH service using:

sudo service ssh start

 

To configure OpenSSH, edit the configuration file:

sudo vim /etc/ssh/sshd_config

 

Here, you can change settings such as the default port, disable root login, and more.

 

Example SSH Connection

To connect to a remote server, use:

ssh user@hostname

Replace user with your username and hostname with the server's address.

 

OpenSSH is a robust tool that is essential for secure network communications. This beginner's guide should help you get started with installing, configuring, and using OpenSSH.

Tuesday, January 23, 2024

How to implement server side paging query in ArangoDB database


 

While reading data from arangodb database if you have large dataset returned from your query result you will be unable to read data from arangodb. In this case you have to use limit operation to limit results in you dataset.  The LIMIT operation allows you to reduce the number of results.

 

Syntax: Two general forms of LIMIT are:

LIMIT count
LIMIT offset, count

 

Example query:

For a1 IN Asset_Envelop
 FILTER a1.updatedDate<@a1_updatedDate
 LIMIT 0, 100
 RETURN {"assetid":a1.`assetId`, "assetcategorylevel2":a1.`assetCategoryLevel2`, "assetcategorylevel3":a1.`assetCategoryLevel3`, "modelid":a1.`modelId`, "serialno":a1.`serialNo`, "manufacturer":a1.`

manufacturer`, "assetcategorylevel4":a1.`assetCategoryLevel4`, "locationid":a1.`locationId`, "thirdpartyid":a1.`thirdPartyId`, "measureid":a1.`measureId`, "inventoryyear":a1.`inventoryYear`, "manufacturedate":a1.`manufactureDate`, "location":a1.`location`, "count":a1.`count`, "sizelength":a1.`sizeLength`, "sizewidth":a1.`sizeWidth`, "sizeunit":a1.`sizeUnit`, "installdate":a1.`installDate`, "assetstatus":a1.`assetStatus`, "assetcondition":a1.`assetCondition`, "assetname":a1.`assetName`, "assetmaterial":a1.`assetMaterial`, "insulationlocation":a1.`insulationLocation`, "insulationtype":a1.`insulationType`, "insulationcondition":a1.`insulationCondition`, "glazingtype":a1.`glazingType`, "caulkingtype":a1.`caulkingType`, "caulkingcondition":a1.`caulkingCondition`, "weatherstrippingtype":a1.`weatherstrippingType`, "weatherstrippingcondition":a1.`weatherstrippingCondition`, "frametype":a1.`frameType`, "framecondition":a1.`frameCondition`, "additionalconditioncomments":a1.`additionalConditionComments`, "warranty":a1.`warranty`, "warrantystartdate":a1.`warrantyStartDate`, "warrantyenddate":a1.`warrantyEndDate`, "did":a1.`did`}

 

For a1 IN Asset_Envelop
 FILTER a1.updatedDate<@a1_updatedDate
 LIMIT 200, 100
 RETURN {"assetid":a1.`assetId`, "assetcategorylevel2":a1.`assetCategoryLevel2`, "assetcategorylevel3":a1.`assetCategoryLevel3`, "modelid":a1.`modelId`, "serialno":a1.`serialNo`, "manufacturer":a1.`

manufacturer`, "assetcategorylevel4":a1.`assetCategoryLevel4`, "locationid":a1.`locationId`, "thirdpartyid":a1.`thirdPartyId`, "measureid":a1.`measureId`, "inventoryyear":a1.`inventoryYear`, "manufacturedate":a1.`manufactureDate`, "location":a1.`location`, "count":a1.`count`, "sizelength":a1.`sizeLength`, "sizewidth":a1.`sizeWidth`, "sizeunit":a1.`sizeUnit`, "installdate":a1.`installDate`, "assetstatus":a1.`assetStatus`, "assetcondition":a1.`assetCondition`, "assetname":a1.`assetName`, "assetmaterial":a1.`assetMaterial`, "insulationlocation":a1.`insulationLocation`, "insulationtype":a1.`insulationType`, "insulationcondition":a1.`insulationCondition`, "glazingtype":a1.`glazingType`, "caulkingtype":a1.`caulkingType`, "caulkingcondition":a1.`caulkingCondition`, "weatherstrippingtype":a1.`weatherstrippingType`, "weatherstrippingcondition":a1.`weatherstrippingCondition`, "frametype":a1.`frameType`, "framecondition":a1.`frameCondition`, "additionalconditioncomments":a1.`additionalConditionComments`, "warranty":a1.`warranty`, "warrantystartdate":a1.`warrantyStartDate`, "warrantyenddate":a1.`warrantyEndDate`, "did":a1.`did`}

 

 The query performs paged query on database and returns limited results which works fine with large dataset also.

 

 

Friday, October 13, 2023

A brief introduction to ArangoDB, its data models and use cases

 


What is ArangoDB?
ArangoDB is an open-source, NoSQL, multi-model database system. It was designed to support multiple data models (key-value, document, graph) within a single database engine. This versatility allows developers to efficiently manage and query data using different paradigms without needing to integrate multiple specialized databases. It is a scalable, fully managed graph database, document store and search engine in one place.


Data Models of ArangoDB: 

ArangoDB supports three primary data models: key-value, document, and graph.

Key-Value Model: In this model, data is stored as key-value pairs, where each key is associated with a value. It's a simple and efficient way to store and retrieve data when you don't require complex relationships or querying capabilities.

Document Model: ArangoDB's document model is similar to JSON or BSON documents. Documents are stored in collections, and each document can have different attributes and structures. This flexibility is useful for handling semi-structured or variable data.

Graph Model: ArangoDB provides robust support for graph databases, allowing you to represent and traverse complex relationships between data entities. This is particularly beneficial for applications like social networks, recommendation engines, and fraud detection.



Key features of ArangoDB include:

Multi-Model Support: ArangoDB can store and query data in three different models: key-value, document, and graph. This flexibility is useful when dealing with diverse data types and relationships.

Native Graph Processing: ArangoDB supports graph databases, making it easy to model, query, and analyze data with complex relationships. It provides efficient graph traversal capabilities.

Joins and Transactions: ArangoDB supports ACID transactions and allows for complex joins between collections, even across different data models. This is particularly valuable when working with interconnected data.

Flexible Query Language(AQL): ArangoDB uses a query language called AQL (ArangoDB Query Language) that combines the strengths of SQL and other query languages. It supports complex queries, joins, and filtering.

Storage Engine: ArangoDB employs a storage engine that's optimized for modern hardware, ensuring good performance for read and write operations.

Replication and Sharding: ArangoDB supports data replication for high availability and automatic failover. It also provides sharding capabilities for distributing data across nodes in a cluster.

Full-Text Search: ArangoDB offers full-text search capabilities, allowing you to search for words or phrases across large datasets.

Schema-Free: While you can define a schema for your data, ArangoDB is also schema-free, allowing you to store and manage data without predefined structures.

Community and Enterprise Editions: ArangoDB comes in both open-source Community and commercial Enterprise editions. The Enterprise edition offers additional features and support for production environments.

 

Use cases of ArangoDB:

 ArangoDB's flexibility as a multi-model database makes it suitable for various use cases that involve diverse data types and complex relationships. Here are some common use cases where ArangoDB can shine:

1. Graph Applications:
   ArangoDB's native graph database capabilities make it an excellent choice for applications that heavily rely on analyzing and traversing complex relationships, such as social networks, recommendation engines, fraud detection, and network analysis.

2. Content Management Systems (CMS):
   ArangoDB can be used to build content management systems where structured data (like user profiles and settings) and unstructured data (like articles, images, and documents) need to coexist in the same database.

3. E-Commerce Platforms:
   E-commerce applications often deal with product catalogs, user profiles, order histories, and recommendations. ArangoDB's multi-model nature allows developers to manage both structured and relationship-rich data efficiently.

4. Internet of Things (IoT):
   IoT applications involve a wide variety of data sources and sensor readings. ArangoDB's ability to store and query different data models can help manage sensor data, device information, user profiles, and more.

5. Geospatial Applications:
   For applications that deal with geographic data, like location-based services, mapping, and geospatial analysis, ArangoDB's graph capabilities can help represent and analyze geographical relationships effectively.

6. Collaboration Platforms:
   Platforms that facilitate collaboration among users, like project management tools or document sharing systems, can benefit from ArangoDB's support for documents, user profiles, and relationships.

7. Knowledge Graphs:

   Building knowledge graphs involves representing concepts, entities, and relationships between them. ArangoDB's graph model is well-suited for constructing and querying such knowledge representations.

8. Fraud Detection and Risk Management:
   Applications that need to identify patterns of fraudulent activities can utilize ArangoDB's graph capabilities to model and analyze intricate relationships between entities involved in fraudulent behavior.

9. Real-Time Analytics:
   ArangoDB can serve as a backend for real-time analytics applications, combining different data models to store user profiles, event data, and relationships for generating insights.

10. Hybrid Applications:

    Many applications require different data models at different stages or components. ArangoDB's ability to seamlessly integrate key-value, document, and graph models can simplify development in such cases.

11. Personalization and Recommendation Systems:
    ArangoDB can store user preferences, behaviors, and item data, allowing developers to create personalized recommendations and improve user experiences.

12. Time Series Data:
    With the right data modeling, ArangoDB can be used to store and analyze time series data, which is common in applications like monitoring, logging, and IoT.

These are just a few examples, and ArangoDB's versatility opens up possibilities for even more use cases. However, it's important to assess the specific requirements of your application to determine whether ArangoDB is the right fit based on factors like data structure, relationships, and query patterns.