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Tag: SSH

Fixing Ubuntu 22 SSH connection problem

Rumi, December 18, 2024

Enable this parameter KbdInteractiveAuthentication yes in /etc/ssh/sshd_conf file ubuntu in 22.04 LTS and restart the sshd services it will work

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SSH to use two-factor authentication using Google Authenticator on Debian or Ubuntu Server

Rumi, November 19, 2023

A computer running Ubuntu 16.04 LTS or above A phone running Android or iOS A configured SSH connection You should understand the danger of stolen passwords. You don’t need to know what two-factor authentication is and how it works. 🙂 Installing and configuring required packages Start a terminal session and…

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Enable Password based authenticaiton in OCI compute instance

Rumi, May 13, 2023

If you want to use a password to access the SSH server, a solution for fixing the Permission denied error is to enable password login in the sshd_config file. To do this, open the file in a text editor.  This example uses the nano editor: sudo nano /etc/ssh/sshd_config In the file, find…

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SSH Key-Pair Authentication

Rumi, September 3, 2022

Create Key-Pair by each user, so login with a common user on SSH Server Host and work like follows. # create key-pair debian@dlp:~$ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/home/debian/.ssh/id_rsa): # Enter or input changes if you want Created directory ‘/home/debian/.ssh’. Enter passphrase…

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SCP Command Syntax

Rumi, March 14, 2019

Before going into how to use the scp command, let’s start by reviewing the basic syntax. The scp utility expressions take the following form: scp [OPTION] [user@]SRC_HOST:]file1 [user@]DEST_HOST:]file2 OPTION – scp options such as cipher, ssh configuration, ssh port, limit, recursive copy ..etc [user@]SRC_HOST:]file1 – Source file. [user@]DEST_HOST:]file2 – Destination…

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SSH Tunnel on PuTTY

Rumi, January 5, 2019

Most of you have probably used a tunnel with an SSH connection. What you probably weren’t aware of is that you can use a dynamic tunnel to access all remote infrastructure. Furthermore, you can specify a port and a destination IP to have direct access. This process is achieved through…

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How to Update SSH & MOTD Banner on CentOS 6

Rumi, December 7, 2015December 7, 2015

For legal reasons, Some people need to display a warning banner on their Linux machine before login so that a person requires to acknowledge the contents of the banner before entering the password. To do this, edit a/etc/issue.net file and fill it with the desired context. Edit the  /etc/issue.net file: sudo…

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Reinstall OpenSSH Server

Rumi, June 21, 2014

First if you have any pre-installed SSH server that has gone bad, remove it- on Redhat Architechture Type the following commands as the root user: # chkconfig sshd off # service sshd stop # yum erase openssh-server You need to edit and update firewall rules that allows inbound connections to…

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SSH Public key based authentication

Rumi, June 9, 2014September 3, 2017

Method-1: Create the cryptographic Key on FreeBSD / Linux / UNIX workstation, enter: ssh-keygen -t rsa Assign the pass phrase (press [enter] key twice if you don’t want a passphrase). It will create 2 files in ~/.ssh directory as follows: ~/.ssh/id_rsa : identification (private) key ~/.ssh/id_rsa.pub : public key Use…

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Reinstall Openssh server on Debian 6/7

Rumi, June 6, 2014

Linux: Debian / Ubuntu Linux Remove SSHD Server Type the following commands: # apt-get –purge remove openssh-server Now reinstall the openssh again using- # apt-get install openssh-server Voila Src: http://www.cyberciti.biz/faq/howto-unix-linux-remove-delete-opensshd-server/

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Myself…

Hi, I am Hasan T. Emdad Rumi, an IT Project Manager & Consultant, Virtualization & Cloud Savvyfrom Dhaka, Bangladesh. I have prior experience in managing numerous local and international projects in the area of Telco VAS & NMC, National Data Center & PKI Naitonal Root and CA Infrastructure. Also engaged with several Offshore Software Development Team.

Worked with Orascom Telecom-Banglalink, Network Elites as VAS partner, BTRC, BTT (Turkey) , Mango Teleservices Limited and Access to Informaiton (A2I-UNDP)

Currently working at Oracle Corporation as Principal Technology Solution and Cloud Architect.

You can reach me [h.t.emdad at gmail.com] and I will be delighted to exchange my views.

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